Project Number Project Title Stage Comments
NCHRP 01-25(1)Effects of Heavy Vehicle Characteristics on Pavement Response and Performance---Phase IICompleted
NCHRP 01-27Video Image Processing for Evaluating Pavement Surface DistressCompleted
NCHRP 01-28Laboratory Determination of Resilient Modulus for Flexible Pavement DesignCompleted
NCHRP 01-28AHarmonized Test Methods for Laboratory Determination of Resilient Modulus for Flexible Pavement DesignCompleted
NCHRP 01-29Improved Surface Drainage of PavementsCompleted
NCHRP 01-30Support Under Portland Cement Concrete PavementsCompleted
NCHRP 01-31Smoothness Specifications for PavementsCompleted
NCHRP 01-32Systems for Design of Highway PavementsCompleted
NCHRP 01-33Methodology to Improve Pavement-Investment DecisionsCompleted
NCHRP 01-34Performance of Subsurface Pavement DrainageCompleted
NCHRP 01-34AContributions of Pavement Structural Layers to Rutting of Flexible PavementsCompleted
NCHRP 01-34BEffectiveness of Subsurface Drainage for HMA and PCC PavementsCompleted
NCHRP 01-34CEffects of Subsurface Drainage on Performance of Asphalt and Concrete PavementsCompleted
NCHRP 01-34DEffects of Subsurface Drainage on Performance of Asphalt and Concrete Pavements: Further Evaluation and Analysis of LTPP SPS-1 and SPS-2 Field SectionsCompleted
NCHRP 01-35AGuide for Pavement ManagementCompleted
NCHRP 01-36Determination of Pavement Damage from Super-Single and Singled-Out Dual Truck TiresCompleted
NCHRP 01-37Development of the 2002 Guide for the Design of New and Rehabilitated Pavement StructuresCompleted
NCHRP 01-37ADevelopment of the 2002 Guide for the Design of New and Rehabilitated Pavement Structures: Phase IICompleted
NCHRP 01-37A(01)Distribution Plan for the Recommended Mechanistic-Empirical Pavement Guide and SoftwareCompleted
NCHRP 01-38Guide on Pavement Rehabilitation StrategiesCompleted
NCHRP 01-39Traffic Data Collection, Analysis, and Forecasting for Mechanistic Pavement DesignCompleted
NCHRP 01-40Facilitating the Implementation of the Guide for the Design of New and Rehabilitated Pavement StructuresCompletedThe MEPDG software is now available from AASHTOWare as the Pavement ME Design program.
NCHRP 01-40AIndependent Review of the Recommended Mechanistic-Empirical Design Guide and SoftwareCompleted
NCHRP 01-40BUser Manual and Local Calibration Guide for the Mechanistic-Empirical Pavement Design Guide and SoftwareCompleted
NCHRP 01-40D(01)Technical Assistance to NCHRP and NCHRP Project 1-40A: Versions 0.9 and 1.0 of the M-E Pavement Design SoftwareCompleted
NCHRP 01-41Models for Predicting Reflection Cracking of Hot-Mix Asphalt OverlaysCompleted
NCHRP 01-42Top-Down Fatigue Cracking of Hot-Mix Asphalt Layers - Phase ICompleted
NCHRP 01-42AModels for Predicting Top-Down Cracking of Hot-Mix Asphalt LayersCompleted
NCHRP 01-43Guide for Pavement FrictionCompleted
NCHRP 01-44Measuring Tire-Pavement Noise at the SourceCompleted
NCHRP 01-44(01)Measuring Tire-Pavement Noise at the Source: Precision and Bias StatementCompleted
NCHRP 01-45Models for Estimating the Effects of Pavement Condition on Vehicle Operating CostsCompleted
NCHRP 01-46Handbook for Pavement Design, Construction, and ManagementCompleted
NCHRP 01-47Sensitivity Evaluation of MEPDG Performance PredictionCompleted
NCHRP 01-48Incorporating Pavement Preservation into the MEPDGCompleted
NCHRP 01-49Guidelines for Conducting Forensic Investigation of Highway PavementsCompleted
NCHRP 01-50Quantifying the Influence of Geosynthetics on Pavement PerformanceCompleted
NCHRP 01-51A Model for Incorporating Slab/Underlying Layer Interaction into the MEPDG Concrete Pavement Analysis ProceduresCompleted
NCHRP 01-52A Mechanistic-Empirical Model for Top-Down Cracking of Asphalt Pavement LayersCompleted
NCHRP 01-53Proposed Enhancements to Pavement ME Design: Improved Consideration of the Influence of Subgrade and Unbound Layers on Pavement PerformanceCompleted
NCHRP 01-54Guidelines for Limiting Damage to Flexible and Composite Pavements Due to the Presence of WaterCompleted
NCHRP 01-55Performance-Based Mix Design of Porous Friction CoursesCompleted
NCHRP 01-57Standard Definitions for Comparable Pavement Cracking DataCompletedThe research will be completed through NCHRP Project 1-57A.
NCHRP 01-57ADeveloping Standard Definitions for Comparable Pavement Cracking DataCompleted
NCHRP 01-57BValidating Proposed Definitions for Comparable Pavement Cracking DataPendingAgency has been selected, but no contract has been signed.
NCHRP 01-58Quantifying the Effects of Implements of Husbandry on PavementsCompleted
NCHRP 01-59Proposed Enhancements to Pavement ME Design: Improved Consideration of the Influence of Subgrade Soils Susceptible to Shrink/Swell and/or Frost Heave on Pavement PerformanceActive
NCHRP 01-60Measuring the Characteristics of Pavement Surface Images and Developing Standard Practices for Calibration, Certification, and Verification of Imaging SystemsActive
NCHRP 01-61Evaluation of Bonded Concrete Overlays on Asphalt PavementsFinal
NCHRP 01-62Impact of Flooding on the Resiliency of Pavement SystemsPending
NCHRP 02-14Public/Private Partnerships for Financing Highway ImprovementsFinal
NCHRP 02-15Identifying Measuring, and Evaluating the Benefits of Safety Roadside Rest AreasFinal
NCHRP 02-16Relationships Between Vehicle Configurations and Highway DesignFinal
NCHRP 02-17(1)Methodologies for Evaluating the Effects of Transportation Policies on the EconomyFinal
NCHRP 02-17(2)Workshop on Research Needs in Transportation and Economic DevelopmentCompleted
NCHRP 02-17(3)Macroeconomic Analysis of the Linkages Between Transportation Investments and Economic PerformanceCompleted
NCHRP 02-17(3)AUpdate and Enhancement of Dataset for Macroeconomic Analysis of Transportation Investments and Economic PerformanceCompleted
NCHRP 02-17(4)Measuring the Relationship Between Freight Transportation Services and Industry ProductivityCompleted
NCHRP 02-17(5)Impact of Urban Congestion on BusinessFinal
NCHRP 02-17(6)Tourism Travel Contributions to Economic DevelopmentCompleted
NCHRP 02-18Research Strategies for Improving Highway User Cost-Estimating MethodologiesCompleted
NCHRP 02-18(2)Valuation of Travel-Time Savings and Predictability in Congested Conditions for Highway User-Cost EstimationCompleted
NCHRP 02-18(3)Development of an Innovative Highway User-Cost Estimation ProcedureCompleted
NCHRP 02-18(4)Development and Demonstration of StratBENCOST ProcedureCompleted
NCHRP 02-19Research on the Relationship Between Economic Development and Transportation InvestmentCompleted
NCHRP 02-19(2)Guidance on Using Existing Analytic Tools for Evaluating Transportation InvestmentsCompleted
NCHRP 02-20Economic Trends and Multimodal Transportation RequirementsCompleted
NCHRP 02-21Economic Implications of CongestionCompleted
NCHRP 02-22Needs in Communicating the Economic Impacts of Transportation InvestmentCompleted
NCHRP 02-22(2)Case Studies on Communicating the Economic Benefits of Transportation InvestmentsCompleted
NCHRP 02-23Development of an Update to the 1977 AASHTO RedbookCompleted
NCHRP 02-24Economic Productivity and Transportation Investment PrioritiesFinal
NCHRP 02-25Workforce 2030--Attracting, Retaining, and Developing the Transportation Workforce: Design, Construction, and MaintenanceFinalNCHRP Research Report 1008: Workforce 2030: Attracting, Retaining, and Developing the 2030 Transportation Workforce: Design, Construction, and Maintenance
NCHRP 02-26Implementation of Life-Cycle Planning Analysis in a Transportation Asset Management FrameworkCompleted
NCHRP 02-27Making Targets Matter: Managing Performance to Enhance Decision-MakingFinalPhase II - Implementation is in progress
NCHRP 03-100Evaluating the Performance of Corridors with RoundaboutsFinal
NCHRP 03-101Costs and Benefits of Public-Sector Deployment of Vehicle to Infrastructure TechnologiesFinal
NCHRP 03-102Design Guidance for Intersection Auxiliary LanesFinal
NCHRP 03-103Update of the Signal Timing ManualFinal
NCHRP 03-104Unsignalized Intersection GuideFinal
NCHRP 03-105Design Guidance for Interchange Loop RampsFinal
NCHRP 03-106Traffic Control Device Guidelines for CurvesCompleted
NCHRP 03-107Work Zone Capacity Methods for the Highway Capacity ManualCompleted
NCHRP 03-108Guidance on Quantifying Benefits of TIM StrategiesFinal
NCHRP 03-109Potential MUTCD Criteria for Selecting the Type of Control for Unsignalized IntersectionsFinal
NCHRP 03-110Estimating the Life-Cycle Cost of Intersection DesignsFinal
NCHRP 03-111Effectiveness of Work Zone Transportation Management Plan (TMP) StrategiesFinal
NCHRP 03-112Operational and Safety Considerations in Making Lane Width Decisions on Urban and Suburban ArterialsFinalFurther work will be conducted under NCHRP 03-112A in 2019
NCHRP 03-112AGuidelines for Selecting Lane Widths on Urban and Suburban ArterialsFinalNCHRP canceled this project and reallocated project funds to NCHRP Program
NCHRP 03-113Guidance for Traffic Signals at Diverging Diamond Interchanges and Adjacent IntersectionsFinalPublished as NCHRP Report 959
NCHRP 03-114Planning and Evaluating Active Traffic Management StrategiesFinalFurther work will be conducted under NCHRP Project 03-114(01)
NCHRP 03-114(01)Planning and Evaluating Active Traffic Management StrategiesActive
NCHRP 03-115Production of a Major Update to the 2010 Highway Capacity ManualFinal
NCHRP 03-117Traffic Control Devices and Measures for Deterring Wrong-Way MovementsFinal
NCHRP 03-118Decision-Making Guide for Traffic Signal PhasingFinal
NCHRP 03-119Application of MASH Test Criteria to Breakaway Sign and Luminaire Supports and Crashworthy Work-Zone Traffic Control DevicesActiveResearch in progress.
NCHRP 03-120Assessing Interactions Between Access Management Treatments and Multimodal UsersFinal
NCHRP 03-121Incorporating Freight, Transit, and Incident Response Stakeholders into Integrated Corridor Management (ICM): Processes and Strategies for ImplementationFinal
NCHRP 03-122Performance-Based Management of Traffic SignalsFinalPublished as NCHRP Report 954
NCHRP 03-123Proposed Practices for the Application of Dynamic Lane Use ControlFinal
NCHRP 03-124Principles and Guidance for Presenting Drivers with Dynamic Information on Active Traffic ManagementFinal
NCHRP 03-125Evaluation of Change and Clearance Intervals Prior to the Flashing Yellow Arrow Permissive Left-Turn IndicationActive
NCHRP 03-126Transportation Operations ManualActive
NCHRP 03-127Cybersecurity of Traffic Management SystemsFinal
NCHRP 03-127(01)Cybersecurity of Traffic Management Systems (Continuation)FinalProject Cancelled
NCHRP 03-128Business Intelligence Techniques for Transportation Agency Decision MakingActiveThe draft final deliverables are expected in December 2022.
NCHRP 03-129Essential Communications: A Guide to Land Mobile Radio (LMR) CompletedPublication Pending
NCHRP 03-130Guide for RoundaboutsCompleted
NCHRP 03-131Guidance for Planning and Implementing Multimodal, Integrated Corridor ManagementFinalPublished as NCHRP Web-Only Document 287
NCHRP 03-132Guidance for Safe and Effective Temporary Traffic Control for Mobile Operations on Two-Lane Two-Way RoadwaysCompletedFinal deliverables pending.
NCHRP 03-133Traffic Signal Control Strategies for Pedestrians and BicyclistsFinalPublished as NCHRP Research Report 969: Traffic Signal Control Strategies for Pedestrians and Bicyclists
NCHRP 03-134Determination of Encroachment Conditions in Work ZonesCompletedResearch completed
NCHRP 03-135Wrong-Way Driving Solutions, Policy, and GuidanceCompletedResearch completed
NCHRP 03-136Evaluating the Performance of Right-Turn-On-Red Operation at Signalized Intersections (with single and dual right-turn lanes)CompletedPublication pending
NCHRP 03-137Algorithms to Convert Basic Safety Messages into Traffic MeasuresFinalResearch is Complete. Published report number is NCHRP Research Report 997
NCHRP 03-138Application of Big Data Approaches for Traffic Incident Management (TIM)Active
NCHRP 03-139Next Generation of the USLIMITS2 Speed Limit Setting Expert SystemActiveResearch in progress.
NCHRP 03-140Guidelines for Applications of RFID and Wireless Technologies in Highway Construction and Asset ManagementActiveThe draft final deliverables have been received.
NCHRP 03-141Guidance on Midblock Pedestrian Signals (MPS) Completed
NCHRP 03-142Evaluating the Impacts of Real-Time Warnings and Variable Speed Limits on Safety and Travel Reliability during Weather EventsActiveResearch in progress.
NCHRP 03-143Framework and Toolkit for Selecting Pedestrian Crossing TreatmentsRFP
NCHRP 03-144Leveraging Existing Traffic Signal Assets to Obtain Quality Traffic Counts and Enhance Transportation Monitoring ProgramsActiveResearch in progress
NCHRP 03-145National Traffic Sensor System Evaluation ProgramPending
NCHRP 03-146Guide for Transportation Operations Manual ImplementationPending
NCHRP 03-147LED Applications on Traffic Control DevicesPending
NCHRP 03-148Preparing for Virtual Operation of Traffic Management SystemsRFP
NCHRP 03-149Evaluation of the Traffic Signal Timing Manual, Third EditionRFP
NCHRP 03-28Effects of Quality of Traffic Signal Progression on DelayFinal
NCHRP 03-32Temporary Pavement Markings for Work ZonesFinal
NCHRP 03-33Capacity and Level-of-Service Procedures for Multilane Rural and Suburban HighwaysFinal
NCHRP 03-35Speed-Change LanesFinal
NCHRP 03-36Development of a Low-Cost Bridge Weigh-In-Motion SystemCompleted
NCHRP 03-37Capacity and Level of Service at Ramp-Freeway JunctionsFinal
NCHRP 03-37(2)Capacity and Level of Service at Ramp-Freeway Junctions (Phase II)Final
NCHRP 03-38(1)Assessment of Advanced Technologies for Relieving Urban Traffic CongestionFinal
NCHRP 03-38(1)AA Study to Assess Advanced Vehicle and Highway TechnologiesFinal
NCHRP 03-38(2)Travel Characteristics of Large-Scale Suburban Activity CentersFinal
NCHRP 03-38(3)Traffic Adaptive Control (Phase 1)---Critical Intersection Control Strategies; (Phase 2)---OPAC Control StrategiesCompleted
NCHRP 03-38(4)Traffic Signal Control for Saturated ConditionsCompleted
NCHRP 03-38(5)Effective Utilization of Street WidthFinal
NCHRP 03-38(6)Cost Sharing for Transportation Improvements Near Major Suburban Employment CentersFinal
NCHRP 03-38(7)Access Management Policies and Guidelines for Activity CentersFinal
NCHRP 03-39Evaluation and Calibration Procedures for Weigh-In-Motion SystemsCompleted
NCHRP 03-39(2)On-Site Evaluation and Calibration Procedures for Weigh-In-Motion SystemsCompleted
NCHRP 03-40Single Point Urban Interchange Design and Operations AnalysisFinal
NCHRP 03-41Procedure for Determining Work Zone Speed LimitsCompleted
NCHRP 03-41(2)Effectiveness and Implementability of Procedures for Work Zone Speed LimitsCompleted
NCHRP 03-42Determination of Stopping Sight DistancesCompleted
NCHRP 03-43Use of Shoulders and Narrow Lanes to Increase Freeway CapacityFinal
NCHRP 03-44Improved Traffic Control Device Design and Placement to Aid the Older DriverCompleted
NCHRP 03-45Speed-Flow Relationships for Basic Freeway SegmentsFinal
NCHRP 03-46Capacity and Level of Service at Unsignalized IntersectionsFinal
NCHRP 03-47Capacity Analysis of Interchange Ramp TerminalsFinal
NCHRP 03-48Capacity Analysis for Actuated IntersectionsFinal
NCHRP 03-49Capacity and Operational Effects of Midblock Left-Turn LanesFinal
NCHRP 03-50Driver Information OverloadCompleted
NCHRP 03-50(2)Additional Investigations on Driver Information OverloadCompleted
NCHRP 03-51Communications Mediums for Signal, IVHS, and Freeway Surveillance SystemsCompleted
NCHRP 03-52Impacts of Access-Management TechniquesFinal
NCHRP 03-52AImpacts of Access-Management TechniquesFinal
NCHRP 03-53Development of a HOV Systems ManualCompleted
NCHRP 03-54Uniform Traffic Signal Displays for Protected/Permissive Left Turn ControlFinal
NCHRP 03-54(2)Evaluation of Traffic Signal Displays for Protected/Permissive Left Turn ControlFinal
NCHRP 03-55A Highway Capacity Manual for the Year 2000Final
NCHRP 03-55(2)Techniques to Estimate Speeds and Service Volumes for Planning ApplicationsFinal
NCHRP 03-55(2)APlanning Applications for the Year 2000 Highway Capacity ManualCompleted
NCHRP 03-55(3)Capacity and Quality of Service for Two-Lane HighwaysCompleted
NCHRP 03-55(4)Performance Measures and Levels of Service in the Year 2000 Highway Capacity ManualFinal
NCHRP 03-55(5)Capacity and Quality of Service of Weaving AreasCompleted
NCHRP 03-55(6)Production of the Year 2000 Highway Capacity ManualFinal
NCHRP 03-56Systemwide Impact of Safety and Traffic Operation Design Decisions for Resurfacing, Restoration, or Rehabilitation (RRR) ProjectsCompleted
NCHRP 03-57Recommended Traffic-Control Devices for Railroad-Highway Grade CrossingsCompleted
NCHRP 03-58Assessing Traffic Control Signal Installations Using Capacity Analysis and SimulationCompleted
NCHRP 03-59Assessment of Variable Speed Limit Implementation IssuesCompleted
NCHRP 03-60Capacity and Quality of Service of Interchange Ramp TerminalsCompletedResults incorporated into the HCM
NCHRP 03-60AValidation and Enhancement of the Highway Capacity Manual’s Interchange Ramp Terminal MethodologyFinal
NCHRP 03-61Communicating Changes in Horizontal AlignmentCompleted
NCHRP 03-62Guidelines for Accessible Pedestrian SignalsCompleted
NCHRP 03-63Assessment of Sharing Information Between Public Safety and Transportation Agencies for Traffic-Incident ManagementCompleted
NCHRP 03-64Highway Capacity Manual Applications GuideFinal
NCHRP 03-65Applying Roundabouts in the United StatesFinal
NCHRP 03-65AUpdate of 'Roundabouts: An Informational Guide'Final
NCHRP 03-66Traffic Signal State Transition Logic Using Enhanced Sensor InformationCompleted
NCHRP 03-67Expert System for Recommending Speed Limits in Speed ZonesCompleted
NCHRP 03-68Guide to Effective Freeway Performance MeasurementCompleted
NCHRP 03-69Design of Construction Work Zones on High-Speed HighwaysCompleted
NCHRP 03-70Multimodal Level of Service Analysis For Urban StreetsCompleted
NCHRP 03-71Innovative Pedestrian Treatments at Unsignalized CrossingsCompleted
NCHRP 03-72Lane Widths, Channelized Right Turns, and Right-Turn Deceleration Lanes in Urban and Suburban AreasFinal
NCHRP 03-73Separation of Vehicles - CMV Only LanesFinalCompleted. Published as NCHRP Report 649/NCFRP Report 3.
NCHRP 03-74Guidelines for Selection of Speed Reduction Treatments at High-Speed IntersectionsCompleted
NCHRP 03-75Analysis of Freeway Weaving SectionsCompleted
NCHRP 03-76AHighway Traffic Signal Warrant For Intersections Near Highway-Rail Grade CrossingsCompletedResults incorporated into the MUTCD
NCHRP 03-76BLow-Cost Active Warning Systems for Highway-Rail Grade CrossingsFinal
NCHRP 03-77Guide to Contracting Intelligent Transportation System ProjectsFinal
NCHRP 03-78Crossing Solutions at Roundabouts and Channelized Turn Lanes for Pedestrians with Vision DisabilitiesCompleted
NCHRP 03-78ACrossing Solutions at Roundabouts and Channelized Turn Lanes for Pedestrians with Vision DisabilitiesCompleted
NCHRP 03-78BGuidelines for the Application of Crossing Solutions at Roundabouts and Channelized Turn Lanes to Assist Pedestrians with Vision DisabilitiesCompleted
NCHRP 03-78CTraining and Technology Transfer for Accessability Guidelines for Roundabouts and Channelized Turn Lanes Completed
NCHRP 03-79Measuring and Predicting the Performance of Automobile Traffic on Urban StreetsFinal
NCHRP 03-79AArterial Performance MeasuresFinal
NCHRP 03-80Traffic Enforcement Strategies for Work ZonesFinal
NCHRP 03-81Strategies for Integrated Operation of Freeway and Arterial CorridorsCompleted
NCHRP 03-82Default Values for Capacity and Quality of Service AnalysesCompletedPublished as NCHRP Report 599
NCHRP 03-83Low-Cost Improvements for Recurring Freeway BottlenecksFinal
NCHRP 03-84Guide for Multistate Transportation Operations ProgramsCompletedReport delivered to AASHTO for publication.
NCHRP 03-85Guidance for the Use of Alternative Traffic Analysis Tools in Highway Capacity AnalysesFinal
NCHRP 03-87Proactive Ramp Management Under the Threat of Freeway-Flow BreakdownCompleted
NCHRP 03-88Guidelines for Ramp and Interchange SpacingCompletedThe revised final report has been received and is being prepared for publication.
NCHRP 03-89Design Guidance for Channelized Right-Turn LanesFinal
NCHRP 03-90Operation of Traffic Signal Systems in Oversaturated ConditionsFinal
NCHRP 03-91Left-Turn Accommodations at Unsignalized IntersectionsFinal
NCHRP 03-92Production of the Year 2010 Highway Capacity ManualFinal
NCHRP 03-93Automated Enforcement for Speeding and Red Light RunningCompletedNCHRP Report 729: Automated Enforcement for Speeding and Red Light Running
NCHRP 03-94Transportation Systems Operations and Management GuideFinal
NCHRP 03-95Guidelines for Timing Yellow and All-Red Intervals at Signalized IntersectionsCompletedNCHRP Report 731: Guidelines for Timing Yellow and All-Red Intervals at Signalized Intersections
NCHRP 03-96Analysis of Managed Lanes on Freeway FacilitiesFinal
NCHRP 03-96AAnalysis of Oversaturated Traffic Flow Conditions on Freeway FacilitiesFinalThe project is canceled
NCHRP 03-97Traffic Signal Analysis with Varying Demands and CapacitiesCompleted
NCHRP 03-98Guidelines on the Use of Auxiliary Through Lanes at Signalized IntersectionsFinalFinal Report published as NCHRP Report 707
NCHRP 03-99Development and Application of Access Management GuidelinesFinal
NCHRP 04-15Corrosion Protection of Prestressing Systems in Concrete BridgesCompleted
NCHRP 04-16Cost and Service Life of Pavement MarkingsCompleted
NCHRP 04-18Design and Evaluation of Large Stone MixturesCompleted
NCHRP 04-19Aggregate Tests Related to Asphalt Concrete Performance in PavementsCompleted
NCHRP 04-19(2)Validation of Performance-Related Tests of Aggregates for Use in Hot-Mix Asphalt PavementsCompleted
NCHRP 04-20Aggregate Tests Related to Performance of Portland Cement ConcreteCompleted
NCHRP 04-20AState of the Art Report and Plan for Research on Aggregates Tests Related to Performance of Portland Cement Concrete PavementsCompleted
NCHRP 04-20BAggregate Tests Related to Performance of Portland Cement Concrete PavementsCompleted
NCHRP 04-20CAggregate Tests Related to Performance of Portland Cement Concrete Pavements: State of the KnowledgeCompleted
NCHRP 04-21Appropriate Use of Waste and Recycled Materials in the Transportation IndustryFinal
NCHRP 04-22Pavement-Marking Materials: Health, Environmental, and Performance AssessmentCompleted
NCHRP 04-23Performance-Related Tests of Aggregates for Use in Unbound Pavement LayersCompleted
NCHRP 04-24HDPE Pipe Material Specifications and Design RequirementsCompleted
NCHRP 04-25Implementation Plan for Automating Highway-Materials TestingCompleted
NCHRP 04-26Thermoplastic Drainage Pipe, Design and TestingCompletedThe project final report is available as NCHRP Report 631.
NCHRP 04-27Application of Fiber Reinforced Polymer (FRP) Composites to the Highway Infrastructure: Strategic PlanCompleted
NCHRP 04-28Feasibility Study for an All-White Pavement Marking SystemCompleted
NCHRP 04-29Selection of Materials to Optimize Sign PerformanceCompleted
NCHRP 04-30Test Methods for Characterizing Aggregate Shape, Texture, and AngularityCompleted
NCHRP 04-30ATest Methods for Characterizing Aggregate Shape, Texture, and AngularityCompleted
NCHRP 04-31Tests of Recycled Aggregates for Use in Unbound Pavement LayersCompleted
NCHRP 04-32Performance and Quality Control of Corrugated Pipe Manufactured with Recycled Polyethylene ContentCompletedThe project final report is available as NCHRP Report 696.
NCHRP 04-33Procedures for Testing and Evaluating Detectable Warning SystemsCompleted
NCHRP 04-34Application of LADAR in the Analysis of Aggregate CharacteristicsCompleted
NCHRP 04-35Improved Test Methods for Specific Gravity and Absorption of Coarse and Fine AggregateCompleted
NCHRP 04-36Characterization of Cementitiously Stabilized Layers for Use in Pavement Design and AnalysisCompleted
NCHRP 04-37Long-Term Performance of Epoxy Adhesive Anchor SystemsCompletedThe project final report is available as NCHRP Project 757.
NCHRP 04-38Recommended Laboratory Test for Predicting the Initial Retroreflectivity of Pavement Markings from Glass Bead QualityCompletedThe project final report is available as NCHRP Report 743.
NCHRP 04-39Field Performance of Corrugated Pipe Manufactured with Recycled Polyethylene ContentCompleted
NCHRP 04-40Reliability-Based Geotechnical Resistance Factors for Axially-Loaded MicropilesFinal
NCHRP 04-41Deterioration Rates and Unit Costs for Geotechnical AssetsFinalProject is cancelled
NCHRP 05-10A Mobile System for Measuring Retroreflectance of Traffic SignsCompleted
NCHRP 05-11Implementation Strategies for Sign Retroreflectivity StandardsFinal
NCHRP 05-12Requirements for Application of Light Emitting Diodes (LEDs) to Traffic Control SignalsFinal
NCHRP 05-13Illumination Guidelines for Nighttime Highway WorkCompleted
NCHRP 05-13(2)Illumination Guidelines for Nighttime Highway WorkCompleted
NCHRP 05-14Advance Warning Arrow Panel VisibilityCompleted
NCHRP 05-15Visibility Performance Requirements for Vehicular Traffic SignalsCompleted
NCHRP 05-16National Calibration Standards for Measuring RetroreflectivityCompleted
NCHRP 05-17Safety Evaluation of Permanent Raised Pavement MarkersCompleted
NCHRP 05-18Color Effectiveness of Yellow Pavement Marking MaterialsCompleted
NCHRP 05-19Guidelines for Roadway Lighting Based on Safety Benefits and CostsCompletedThe research has been terminated. Papers on various aspects of the research are available at the links provided below.
NCHRP 05-20Guidelines for Nighttime Visibility of Overhead Guide SignsCompleted
NCHRP 05-21Safety and Performance Criteria for Retroreflective Pavement MarkersFinalResearch complete. Final Report published as NCHRP Research Report 1015
NCHRP 05-22Guidelines for Solid-State Roadway LightingCompleted
NCHRP 05-22AGaps and Emerging Technologies in the Application of Solid-State Roadway LightingActive
NCHRP 05-23Effects of LED Roadway Lighting on Driver Sleep Health and AlertnessCompleted
NCHRP 05-24Guidelines for Vehicle and Equipment Color, Marking, and LightingCompletedPublication Pending
NCHRP 05-25Guide to the Contextual Application of Overhead Lighting on HighwaysPending
NCHRP 05-26Development of Updated Warrants for Roadway LightingRFP
NCHRP 05-27Guide for Lighting at Innovative Intersections/Interchanges, including Roundabouts Anticipated
NCHRP 06-12Improved Visibility for Snow Plowing OperationsCompleted
NCHRP 06-13Guidelines for Snow and Ice Control Materials and MethodsCompleted
NCHRP 06-14Feasibility of Using Friction Indicators to Improve Winter Maintenance Operations and MobilityCompleted
NCHRP 06-15Testing and Calibration Methods for RWIS SensorsCompleted
NCHRP 06-16Guidelines for the Selection of Snow and Ice Control Materials To Mitigate Environmental ImpactsCompleted
NCHRP 06-17Performance Measures for Snow and Ice Control OperationsCompleted
NCHRP 06-18Guide for Snow and Ice Control OperationsCompleted
NCHRP 06-19Guidebook for Mechanical Methods for Snow and Ice Control OperationsActive
NCHRP 07-12Microcomputer Evaluation of Highway User BenefitsCompleted
NCHRP 07-12(2)Metrication and Enhancement of MicroBENCOST Software PackageCompleted
NCHRP 07-13Quantifying CongestionFinal
NCHRP 07-14Guidelines for Analysis of Investments in Bicycle FacilitiesCompleted
NCHRP 07-15Cost-Effective Measures and Planning Procedures for Travel Time, Delay, and ReliabilityFinal
NCHRP 07-16Recommended Revisions to the AASHTO Guidelines for Traffic Data ProgramsFinal
NCHRP 07-17Pedestrian and Bicycle Transportation along Existing RoadsFinal
NCHRP 07-18Crash Experience Warrant for Traffic SignalsFinal
NCHRP 07-19Methods and Technologies for Collecting Pedestrian and Bicycle Volume DataFinalGuidebook published as NCHRP Report 797; final research report is available as Web-only Document 205
NCHRP 07-20Guidance for Implementation of Traffic Incident Management Performance MeasurementFinal
NCHRP 07-21Asset Management Guidance for Traffic Control Devices, Barriers, and LightingActive
NCHRP 07-22Planning and Preliminary Engineering Applications Guide to the Highway Capacity ManualFinalPublished as NCHRP Report 825
NCHRP 07-23Access Management in the Vicinity of InterchangesFinalFinal report NCHRP Research Report 977 Volumes 1 and 2 are available.
NCHRP 07-24Estimating the Value of Truck Travel Time ReliabilityFinalPublished as NCHRP Research Report 925
NCHRP 07-25Guide for Pedestrian and Bicycle Safety at Alternative Intersections and Interchanges (A.I.I.)FinalPublished as NCHRP Research Report 948
NCHRP 07-26Update of Highway Capacity Manual: Merge, Diverge, and Weaving MethodologiesCompletedTo be published as NCHRP Research Report 1038
NCHRP 07-27An Update of the Green Book Design VehiclesCompletedResearch is complete. Final deliverables are currently under panel review.
NCHRP 07-28Assessing the Safety Impacts of Right-Turn Lanes on Rural and Suburban Highways Active
NCHRP 07-29Development of the 8th Edition of AASHTO's A Policy on the Geometric Design of Highways and Streets (Green Book)ActiveResearch in progress.
NCHRP 07-30Methods for Assigning Short-Duration Traffic Volume Counts to Adjustment Factor Groups for Estimating AADTActive
NCHRP 07-31State DOT and Tribal Use of Active Transportation Data: Practices, Sources, Needs, and GapsRFP
NCHRP 07-32Guide for Long-Term Automatic Traffic Signal Performance Measurement Systems ApplicationsPending
NCHRP 07-33Evaluate the Benefits of Increasing Clear Zone at Higher Speed/Traffic Volume/Crash LocationsPending
NCHRP 07-34Artificial Intelligence for Transportation Systems Management and Operations Applications Pending
NCHRP 08-100Environmental Justice Analyses When Considering Toll Implementation or Rate ChangesCompleted
NCHRP 08-101Enhanced Truck Data Collection and Analysis for Emissions ModelingFinalPublished as NCHRP Report 909
NCHRP 08-102Bicyclist Facility Preferences and Effects on Increasing Bicycle TripsFinal
NCHRP 08-103Implementing NCHRP Report 806: Guide to Cross-Asset Resource Allocation and the Impact on Transportation System PerformanceFinalPublished as NCHRP Research Report 921
NCHRP 08-104A Guidebook for Post-Award Contract Administration for Highway Projects Delivered Using Alternative Contracting MethodsCompleted
NCHRP 08-105Measuring the Effectiveness of Public Involvement in Transportation Planning and Project Delivery Final
NCHRP 08-106Metropolitan Freight Transportation: Implementing Effective StrategiesFinalPublished as NCHRP Report 897.
NCHRP 08-107A Guidebook for Emergency Contracting Procedures for Administration of a Regional Emergency Completed
NCHRP 08-108Developing National Performance Management Data Strategies to Address Data Gaps, Standards, and QualityFinal
NCHRP 08-109Updating the AASHTO Transportation Asset Management Guide—A Focus on Implementation, Phase 1Completed
NCHRP 08-110Traffic Forecasting Accuracy Assessment ResearchCompleted
NCHRP 08-111Effective Decision-Making Methods for Freight-Efficient Land UseFinal
NCHRP 08-112A Guidebook for Implementing Alternative Technical Concepts into Project Delivery MethodsFinalFinal publication now available.
NCHRP 08-113Integrating Effective Transportation Performance, Risk, and Asset Management PracticesFinalPublished as NCHRP Research Report 985
NCHRP 08-114Systematic Approach for Determining Construction Contract Time: A GuidebookCompletedPublished as NCHRP Research Report 979: Systematic Approach for Determining Construction Contract Time: A Guidebook and NCHRP Web-Only Document 298: Developing a Systematic Approach for Determining Construction Contract Time.
NCHRP 08-115Guidebook for Data and Information Systems for Transportation Asset Management Final
NCHRP 08-116Framework for Managing Data from Emerging Transportation Technologies to Support Decision-MakingCompleted
NCHRP 08-117Impact of Transformational Technologies on Land Use and TransportationFinal
NCHRP 08-118Risk Assessment Techniques for Transportation Asset ManagementCompleted
NCHRP 08-119Data Integration, Sharing, and Management for Transportation Planning and Traffic OperationsActive
NCHRP 08-120Initiating the Systems Engineering Process for Rural Connected Vehicle CorridorsFinalFinal report NCHRP 978 is now available.
NCHRP 08-121Accessibility Measures in Practice: Guidance for Transportation Agencies Final
NCHRP 08-122Metropolitan Planning Organizations: Strategies for Future SuccessFinal
NCHRP 08-123Census Transportation Data Field Guide for Transportation ApplicationsActive
NCHRP 08-124Quantifying the Impacts of Corridor ManagementCompleted
NCHRP 08-125Attracting, Retaining, and Developing the Transportation Workforce: Transportation PlannersFinal
NCHRP 08-127Emerging Issues: Impact of New Disruptive Technologies on the Performance of DOTsActive
NCHRP 08-128Snapshots of Planning PracticesPending
NCHRP 08-129Incorporating Resilience Concepts and Strategies in Transportation PlanningCompleted
NCHRP 08-130Best Practices in Coordination of Public Transit and Ride SharingPending
NCHRP 08-131Access to Jobs, Economic Opportunities, and Education in Rural AreasCompleted
NCHRP 08-132Accessing America's Great Outdoors: Forecasting Recreational Travel DemandActive
NCHRP 08-133Implementing the National Intercity Bus Atlas Active
NCHRP 08-134Integrating Freight Movement into 21st Century Communities' Land Use, Design, and Transportation SystemsActive
NCHRP 08-135Reliability and Quality of Service Evaluation Methods for Rural HighwaysActive
NCHRP 08-136Guidebook on Using Performance-Based Management Approaches for MaintenancePending
NCHRP 08-137Updates to the Digital Edition of the AASHTO Transportation Asset Management GuideActive
NCHRP 08-138Guide to the Integration of Transportation Systems Management and Operations into Transportation Asset Management Pending
NCHRP 08-139Guide for Preventing and Mitigating the Risk of Bridge and Tunnel Strikes by Motor VehiclesActiveThe research team is proceeding with Phase II work, data collection and analysis.
NCHRP 08-140Guide for Truck Parking Information Management SystemsActive
NCHRP 08-141A Guidebook for Local Truck Parking RegulationsActiveResearch in progress.
NCHRP 08-142Virtual Public Involvement: A Manual for Effective, Equitable, and Efficient Practices for Transportation AgenciesActive
NCHRP 08-143Guide to the Application of Spatial Segmentation on Travel Time Reliability MeasuresPending
NCHRP 08-144Rural Transit Fleet Mix and Vehicle Size Decision TreesRFP
NCHRP 08-145Utilizing Cooperative Automated Transportation (CAT) Data to Enhance Freeway Operational StrategiesActive
NCHRP 08-146Integrating Resiliency into Transportation System OperationsActive
NCHRP 08-147 Improving Public Transportation in Rural Areas and Tribal CommunitiesActiveThis project is a joint NCHRP TCRP project (TCRP B-49)
NCHRP 08-148A Guide for Management of Out-of-Service FacilitiesPending
NCHRP 08-149Estimating Benefits of Closing Gaps in Active Transportation NetworksActive
NCHRP 08-150Tools to Integrate Equity into Active Transportation and Safety InvestmentsRFP
NCHRP 08-151Risk Management at State DOTs: Building Momentum and Sustaining the Practice Active
NCHRP 08-152Strategies for Improving Diversity, Equity, and Inclusion in the Transportation Planning ProfessionPending
NCHRP 08-153A Guide for the Development and Use of Truck Traffic Forecasts in DesignPending
NCHRP 08-154Guidance for Agencies to Incorporate Uncertainty into Long-Range Transportation PlanningActive
NCHRP 08-155Handbook for Addressing Racial Disparities in the Project Delivery Process Pending
NCHRP 08-156Planning for Innovative and Emerging Mobility Futures at Intermodal Passenger FacilitiesAnticipated$200,000 to TCRP D-21
NCHRP 08-157Best Practices for Data Fusion of Probe and Point Detector DataActive
NCHRP 08-158A Compendium for Communicating the Value of Freight and Community InteractionsPending
NCHRP 08-159How to Assess and Address Equity of Access to Essential Goods and ServicesPending
NCHRP 08-160Guide to Identify and Mitigate the Negative Effects of Gentrification Caused by Transportation InvestmentPending
NCHRP 08-161Cultivating Accountability Through Meaningful Public EngagementPending
NCHRP 08-162Guidance for Implementing Equitable Transportation Decision-MakingActive
NCHRP 08-163Defining Appropriate Design and Accommodation Thresholds for Active Transportation in a Context-Driven ApproachRFP
NCHRP 08-164Institutional Integration of Active TransportationRFP
NCHRP 08-165Use of Active Transportation Data in Decision-MakingRFP
NCHRP 08-166Racial and Socioeconomic Inequities in Active Transportation SafetyRFP
NCHRP 08-167Guide for Creating Effective Transportation VisualizationsRFP
NCHRP 08-168Analysis and Assessment of the National Performance Management DataRFP
NCHRP 08-169Valuing Diversity, Equity, and Inclusion in Transportation Asset ManagementRFP
NCHRP 08-170Closing the Loop: Post-Implementation Evaluation of Transportation ProjectsRFP
NCHRP 08-171Institutionalizing the Safe System Approach in Transportation Planning and ProgrammingRFP
NCHRP 08-172Benefit Analysis of Private Health Sector Investments in Non-Emergency Medical TransportationRFP
NCHRP 08-173NCHRP 08-173: Impacts of E-Commerce on Travel and Land Use PatternsRFP
NCHRP 08-174Development of a Surveying and Mapping Guide for Transportation ProjectsAnticipated
NCHRP 08-24AForecasting the Basic Inputs to Transportation Planning at the Zonal LevelFinal
NCHRP 08-28Strategic Planning and Management for Transportation AgenciesCompleted
NCHRP 08-29Travel Estimation Techniques for Urban PlanningFinal
NCHRP 08-29(2)Travel Estimation Techniques for Urban PlanningFinal
NCHRP 08-30Characteristics and Changes in Freight Transportation DemandCompleted
NCHRP 08-30AFreight Capacity for the Next CenturyCompleted
NCHRP 08-31ALong-Term Availability of Multimodal Corridor CapacityCompleted
NCHRP 08-32Workshop on Multimodal Transportation Planning Research NeedsCompleted
NCHRP 08-32(1)Innovative Practices for Multimodal Transportation Planning for Freight and PassengersCompleted
NCHRP 08-32(2)Multimodal Transportation: Development of a Performance-Based Planning ProcessCompleted
NCHRP 08-32(2)AMultimodal Transportation: Development of a Performance-Based Planning ProcessCompleted
NCHRP 08-32(3)Integration of Land-Use Planning with Multimodal Transportation PlanningCompleted
NCHRP 08-32(4)Developing and Maintaining Partnerships for Multimodal Transportation PlanningCompleted
NCHRP 08-32(5)Multimodal Transportation Planning DataCompleted
NCHRP 08-33Quantifying Air-Quality and Other Benefits and Costs of Transportation Control MeasuresCompleted
NCHRP 08-34Major Investment Studies: Development of a Practitioner's Guidebook for Effective Study Design, Management, and ImplementationCompleted
NCHRP 08-35Incorporating ITS into the Transportation Planning ProcessFinal
NCHRP 08-36Research for the AASHTO Standing Committee on PlanningFinalCompleted. See individual Tasks for project details.
NCHRP 08-36/Task 001Parking Modeling ProceduresCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 002Incorporating System Operations and Management Practices in Transportation PlanningFinalCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 003Management of Institutional Changes in State Transportation Planning Processes and ProgramsCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 004The Use of Expert Panels in Analyzing Transportation and Land Use AlternativesFinalCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 005Incorporating Market Research Techniques into the Transportation Planning ProcessCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 006Product Delivery of New and Improved Travel Forecasting ProceduresCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 007Development of a Multimodal Tradeoffs Methodology for Use in Statewide Transportation PlanningFinalSee NCHRP 08-36/Task 7(02) for the Phase II Report
NCHRP 08-36/Task 007(02)Development of a Multimodal Tradeoffs Methodology for Use in Statewide Transportation PlanningFinalPlease see NCHRP 08-36/Task 7 for the Phase I Report
NCHRP 08-36/Task 008Workshop on Transportation Performance MeasuresCompletedCompleted---Published as TRB Conference Proceedings 26
NCHRP 08-36/Task 009Defining and Identifying Probable Non-Attainment Areas for PM2.5CompletedCompleted---Final report sent to AASHTO; see Project 25-17
NCHRP 08-36/Task 010Global Climate Change and Transportation: Coming to TermsCompletedCompleted---Final report published by Eno Foundation and sent to AASHTO
NCHRP 08-36/Task 011Technical Methods to Support Analysis of Environmental-Justice IssuesFinalCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 013National Conference on Transportation and Economic DevelopmentCompletedCompleted---Published as TRB Circular E-C050
NCHRP 08-36/Task 014Consultation Between State DOTs and Local Elected Officials in Non-Metropolitan AreasCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 015Conference on Transportation and the Environment for the 21st CenturyCompletedCompleted---Published as TRB Circular E-C028
NCHRP 08-36/Task 016Assessment of Proposed Planning and National Environmental Policy Act RegulationsCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 017Two-Way Education Process with a New CEO on Transportation PlanningCompletedTask cancelled
NCHRP 08-36/Task 018Incorporating Safety into the Transportation Planning ProcessFinalCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 019Transportation Environmental Research Needs ConferenceCompletedCompleted---Published as TRB Conference Proceedings 28
NCHRP 08-36/Task 020Conformity Problems Caused by the Mismatch in SIP / Transportation Plan TimeframeCompletedCompleted---Final report sent to AASHTO; $25K from Project 20-7/Task 141
NCHRP 08-36/Task 021Expediting the Transportation Planning Process to Meet Fast Paced Customer RequirementsFinalCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 022Demonstrating the Positive Impacts of Transportation Investments on Economic, Social, Environmental, Community, and Quality of Life IssuesCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 023Review of the Potential Feasibility of Using Alternative Revenue Sources to Fund Future State Transportation NeedsCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 024Investment Requirements Scenarios DevelopmentCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 025Improved Geographic Clarity in Reporting of Road System ExtentCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 026Surface Transportation Safety and InvestmentCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 027Interstate Interchange ReviewCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 028Rural Conformity: A Survey of PracticeCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 029Development of a Multimodal Tradeoffs Methodology for Use in Statewide Transportation Planning: Application of the FrameworkCompletedContracted as 08-36/Task 07(02); continuation of Project 08-36/Task 07
NCHRP 08-36/Task 030Workshop on Issues in Intermodal ConnectorsCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 031Elderly Issues in the Transportation Planning ProcessCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 032Tools, Techniques, and Methods in Rural Transportation PlanningCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 033Best Practices in Statewide Freight PlanningCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 034Incorporating Security into the Transportation Planning ProcessCompletedCompleted---Published as NCHRP Report 525, Volume 3
NCHRP 08-36/Task 035Evaluating State DOT's Planning Practices in Rural PlanningCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 036Continuation of NCHRP 8-36(6) TMIP SupportCompletedCompleted. For contract purposes, this has been amended into the work plan of NCHRP Project 8-36, Task 6.
NCHRP 08-36/Task 037A Retrospective on the Conditions and Performance ReportCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 038Supplemental Evaluation in Support of NCHRP 25-17CompletedCompleted---Results incorporated into NCHRP 25-17 final report
NCHRP 08-36/Task 039Forecasting Travel Time, Delay, and ReliabilityCompletedCompleted: For contract purposes, this task has been amended into NCHRP Project 7-15 and will be reported there.
NCHRP 08-36/Task 040National Site Visits on Transportation and GrowthCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 041Non-Response to Personal Travel Surveys (support for NCHRP 8-37)CompletedCompleted---Results incorporated into NCHRP 08-37 final report
NCHRP 08-36/Task 042MPO Redefinition and Evolving RolesCompletedCompleted--Final report sent to AASHTO
NCHRP 08-36/Task 043Return on Investment on Freight Rail Capacity ImprovementCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 044Multi-State MPOs: Approaches, Cases, and Institutional ArrangementsFinalCompleted--Final: Report sent to AASHTO
NCHRP 08-36/Task 045Multi-State Corridor PlanningCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 046Synthesis of Where Data Groups are Organizationally Located in State DOTsCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 047Effective Organization of Performance MeasurementCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 048Guidance for Better Linking Systems Planning and the NEPA ProcessCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 049Synthesis of Metropilitan-Level Transportation Funding SourcesCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 050What is the Impact of an Aging Population on System Planning and Investment Policies?CompletedCompleted---Final report has been received
NCHRP 08-36/Task 051Information Design for Effective Decision Making and CommunicationCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 052Changes in Travel Behavior/Demand Due to Managed Lanes (HOV, HOT) Facility System ExpansionFinalCompleted--Final report sent to AASHTO
NCHRP 08-36/Task 053Peer Review Capacity Building Partnership: Best Practices in Non-Traditional Performance Measures, Multimodal Goods Movement Tradeoffs, Safety, Reliability, and State FundingCompletedCompleted---Final reports sent to AASHTO
NCHRP 08-36/Task 054Census Data For Transportation PlanningCompletedCompleted---Papers posted to TRB Conference website and will be published in Conference Proceedings 12/30/2006
NCHRP 08-36/Task 055The Role of Collaboration in Freight Transportation ManagementCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 056Highway Construction Project Coordination to Minimize Traffic ImpactsFinalCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 057Institutional Needs in Safety PlanningFinalCompleted
NCHRP 08-36/Task 058Best Practices for State and MPO NHS and STP ProgrammingFinal
NCHRP 08-36/Task 059Transportation and HealthFinalCompleted
NCHRP 08-36/Task 060State DOT Consideration of Infrastructure Development Potential PlanningCompletedCompleted
NCHRP 08-36/Task 061Monetary Valuation Per Dollar of Investment in Different Performance MeasuresCompletedCompleted
NCHRP 08-36/Task 062Best Practice Methodology for Calculating Return on Investment (ROI) for Transportation Programs and ProjectsCompletedCompleted - Final Report sent to AASHTO
NCHRP 08-36/Task 063Making NAICS (North American Industrial Classification System) Work for TransportationCompletedCompleted
NCHRP 08-36/Task 064Right of Way Methods and Tools to Control Project Cost EscalationCompletedCompleted--project canceled and funds combined with NCHRP Project 08-49, Procedures for Cost Estimation and Management for Highway Projects During Planning, Programming, and Reconstruction
NCHRP 08-36/Task 065Best Practices for Incorporating Commodity Flow Survey and Related Data into the MPO and Statewide Planning ProcessesFinalFinal Report sent to AASHTO
NCHRP 08-36/Task 066Improved Methods for Assessing Social, Cultural, and economic Effects of Transportation ProjectsFinalCompleted--Final report sent to AASHTO
NCHRP 08-36/Task 067Best Practices in Using Programmatic Investment Strategies in Statewide Transportation PlansFinalCompleted--Final report sent to AASHTO
NCHRP 08-36/Task 068Implications of New 8-Hour Control Strategy Development on Transportation Programs, Policies, and ProjectsCompletedCompleted
NCHRP 08-36/Task 069Peer Review Sessions to be amended into NCHRP 8-36(53)FinalCompleted; Reports sent to AASHTO
NCHRP 08-36/Task 070Scoping Study for Statewide Travel Forecasting National ModelFinal
NCHRP 08-36/Task 071Disclosure Avoidance Techniques to Improve ACS Data AvailabilityFinalThe project has been completed and the final report submitted to AASHTO
NCHRP 08-36/Task 072Implementing Project Cost Estimation and Management Process ImprovementsCompletedCompleted--Final report sent to AASHTO
NCHRP 08-36/Task 073Adding Resilience to the Freight System in Statewide and Metropolitan Transportation Plans: Developing a Conceptual ApproachCompletedCompleted - Final Report sent to AASHTO
NCHRP 08-36/Task 074Customer Research Practices and Applications in TransportationCompletedCompleted--Final report sent to AASHTO
NCHRP 08-36/Task 075Research FindersCompletedCompleted--Final report sent to AASHTO
NCHRP 08-36/Task 076Conference on Best Practices in Meeting SAFETEA-LU Requirements in the Statewide Transportation Planning ProcessFinalCompleted.
NCHRP 08-36/Task 078Small Community Research and Peer ExchangeFinalCompleted
NCHRP 08-36/Task 079Scoping Study for a Freight Data Exchange NetworkFinalThe project has been completed and the final report submitted to AASHTO
NCHRP 08-36/Task 080Synthesis of State Practices in Developing Linear Referencing SystemsFinalThe project has been completed and the final report submitted to AASHTO
NCHRP 08-36/Task 081Enhancing the American Community Survey Data as a Source for Home-to-Work FlowsFinal
NCHRP 08-36/Task 083Transportation Planning Partnerships to Enhance National Parks and Gateway CommunitiesFinal
NCHRP 08-36/Task 084Asset Management of Environmental Mitigation FeaturesFinalFunding was provided to NCHRP 25-25, Task 51
NCHRP 08-36/Task 085Congestion Pricing and Investment RequirementsFinalThis project is complete and the final report has been sent to AASHTO.
NCHRP 08-36/Task 086Corridor Approaches to Integrating Land Transportation and Land UseCompleted
NCHRP 08-36/Task 087SCOP Strategic PlanningFinal
NCHRP 08-36/Task 088Transportation Research Programs to Address Energy and Climate ChangeFinalCompleted-- See TRB Special Report 299
NCHRP 08-36/Task 089Evaluating and Communicating Model Results: Guidebook for PlannersFinalFinal Report sent to AASHTO
NCHRP 08-36/Task 090Best Practices in the Use of Microsimulation ModelsFinalCompleted. Final Report submitted to AASHTO SCOP
NCHRP 08-36/Task 091Validation and Sensitivity Considerations for Statewide ModelsFinalFinal Report submitted to AASHTO SCOP
NCHRP 08-36/Task 092Counting MotorcyclesFinalFinal Report sent to AASHTO
NCHRP 08-36/Task 093Road Pricing Communication PracticesFinalComplete. Final report sent to AASHTO.
NCHRP 08-36/Task 094Integrated State and Local Government Policy Approaches to Transportation and Climate ChangeFinalCompleted - Final Report sent to AASHTO
NCHRP 08-36/Task 095Virtual Conference on Transportation Planning Research NeedsFinal
NCHRP 08-36/Task 096Selecting and Using Advanced Travel Demand Modeling Tools - A Peer ExchangeFinalFinal Report sent to AASHTO.
NCHRP 08-36/Task 097ATowards Quantitative Safety Planning: Implementation of PLANSAFEFinalCompleted - Final Report sent to AASHTO
NCHRP 08-36/Task 097BTowards Quantitative Safety Planning: Implementation SupportFinalCompleted. Results incorporated into NCHRP 08-36, Task 97A Final Report.
NCHRP 08-36/Task 098Improving Home-to-Work and Employment Data for Transportation PlanningFinalFinal Report sent to AASHTO SCOP
NCHRP 08-36/Task 099How We Travel: A Sustainable National Program for Travel DataFinalPublished as TRB Special Report 304
NCHRP 08-36/Task 100Transportation Data Program Self Assessment GuideFinalCompleted. Final Report submitted to AASHTO SCOP
NCHRP 08-36/Task 101Understanding How to Develop and Apply Economic Analyses: Guidance for Transportation PlannersFinalCompleted-- Final Report sent to AASHTO.
NCHRP 08-36/Task 102Assessing Alternative Methods for Measuring Regional MobilityFinalCompleted--Final Report sent to AASHTO
NCHRP 08-36/Task 103Mining American Recovery and Reinvestment Act Jobs Data for Opportunities to Improve Economic Impact and Performance Analysis of Transportation InvestmentsFinalCompleted--Final Report sent to AASHTO.
NCHRP 08-36/Task 104Integrating Performance Measures into a Performance-Based Planning and Programming (PBPP) ProcessFinal
NCHRP 08-36/Task 105Strategic Plan for the AASHTO Standing Committee on Planning: 2011 UpdateFinalCompleted--Final Report sent to AASHTO.
NCHRP 08-36/Task 106Synthesis of Practices for Prioritizing Enhancement and Nonmotorized Transportation ProjectsFinal
NCHRP 08-36/Task 107Synthesis of State DOT and MPO Planning and Analyses on Strategies to Reduce Greenhouse Gas EmissionsFinalComplete. FInal Report sent to AASHTO.
NCHRP 08-36/Task 108Improving Travel Behavior Data for Alternative Fuel Vehicles: A Scoping StudyFinalCompleted -- Final Report Sent to AASHTO
NCHRP 08-36/Task 109Non-Rail Infrastructure Upgrade and/or New Construction Due to Passenger Rail ImplementationFinalCompleted. Final report sent to AASHTO.
NCHRP 08-36/Task 111U.S. Commuting and Travel Patterns: Data Development and AnalysisFinal
NCHRP 08-36/Task 112Cross Mode Project Prioritization -- An Assessment of Current PracticeFinal
NCHRP 08-36/Task 113The Future of Transportation Planning in State DOTsFinal
NCHRP 08-36/Task 114Transportation Asset Management for Ancillary StructuresFinal
NCHRP 08-36/Task 115Application of Fair Division, Data Envelopment Analysis, and Conjoint Analysis Techniques to Funding Decisions at the Program and Project/Activity Level FinalCompleted--Final Report sent to AASHTO
NCHRP 08-36/Task 116Development of Transportation Asset Management Plan TemplatesCompleted
NCHRP 08-36/Task 117Sketch Planning Tools for Regional SustainabilityFinal
NCHRP 08-36/Task 118Performance Measures for State Infrastructure PreservationFinal
NCHRP 08-36/Task 119Transportation Users Guide to the Economic CensusFinal
NCHRP 08-36/Task 120Snapshots of Planning PracticesCompleted
NCHRP 08-36/Task 121Successful Implementation of Enterprise Risk Management in State Transportation AgenciesCompleted
NCHRP 08-36/Task 125Transportation Asset Management Knowledge PortalCompleted
NCHRP 08-36/Task 126Development of a Risk Register Spreadsheet ToolCompleted
NCHRP 08-36/Task 127Employment Data for Planning: A Resource GuideCompleted
NCHRP 08-36/Task 128Data Visualization Methods for Transportation AgenciesCompleted
NCHRP 08-36/Task 129Scoping Study to Establish Standards and Guidance for Data for Transportation Planning and Traffic Operations PurposesCompleted
NCHRP 08-36/Task 12AAnalysis of the Factors Affecting Future Transportation Environment and their Implications for State DOTsCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 12BAnalysis of the Factors Affecting Future Transportation Environment and their Implications for State DOTsCompletedCompleted---Final report sent to AASHTO
NCHRP 08-36/Task 130Inventory and Assessment of Methods for Making Collected Transportation Data AnonymousCompleted
NCHRP 08-36/Task 131Transportation Data Integration to Develop Planning Performance Measures Completed
NCHRP 08-36/Task 132Understanding Changes in Youth MobilityCompleted
NCHRP 08-36/Task 134Transportation Asset Management Research RoadmapCompleted
NCHRP 08-36/Task 135Addressing Margins of Error in Small Areas of Data Delivered through the American Fact Finder or the Census Transportation Planning Products ProgramCompleted
NCHRP 08-36/Task 136License Plate Reader Technology: Privacy Risk Analysis and Case StudiesCompleted
NCHRP 08-36/Task 137Assessing the Utility and Costs of Statewide Travel Demand ModelsCompleted
NCHRP 08-36/Task 138Support and Update of the Strategic Plan for SCOP/Subcommittees on TAMCompleted
NCHRP 08-36/Task 139Planning Research DigestCompleted
NCHRP 08-36/Task 140Assessing Actual Transportation Impacts of the 2005 BRAC DecisionsCompleted
NCHRP 08-36/Task 141Evaluation of Walk and Bicycle Demand Modeling PracticeCompleted
NCHRP 08-36/Task 142Advancing Sustainability through Multi-Agency CollaborationsCompleted
NCHRP 08-36/Task 145Scenario Planning LiteCompleted
NCHRP 08-36/Task 146Economic Resilience and Long-Term Highway/Transportation Infrastructure InvestmentCompleted
NCHRP 08-36/Task 147Strategic Mobility Research: Enhancing Mobility, Stimulating Economic Activity, Saving LivesCompleted
NCHRP 08-36CResearch for the AASHTO Standing Committee on PlanningActive
NCHRP 08-37Standardized Procedures for Personal Travel SurveysCompleted
NCHRP 08-38Consideration of Environmental Factors in Transportation Systems PlanningCompleted
NCHRP 08-39Financing and Improving Land Access to U.S. Cargo HubsCompleted
NCHRP 08-40Evaluating Cultural Resource Significance Using Information Technology (IT)Completed
NCHRP 08-40(02)Evaluating Cultural Resource Significance-Implementation ToolsCompleted
NCHRP 08-41Effective Methods for Environmental Justice AssessmentFinal
NCHRP 08-42Rail-Freight Solutions to Roadway CongestionFinal
NCHRP 08-43Methods for Forecasting Statewide Freight Movements and Related Performance MeasuresFinal
NCHRP 08-44Incorporating Safety into Long-Range Transportation PlanningCompleted
NCHRP 08-44(02)Transportation Safety Planning: Forecasting the Safety Impacts of Socio-Demographic Changes and Safety InvestmentsCompleted
NCHRP 08-45A New Vision of Mobility: Guidance to Foster Collaborative Multimodal Decision MakingCompleted
NCHRP 08-46A Guide for Including Access Management in Transportation PlansCompleted
NCHRP 08-47Guidebook for Freight Policy, Planning, and Programming in Small and Mid-Sized Metropolitan AreasFinalCompleted and published as NCHRP Report 570
NCHRP 08-48Using American Community Survey Data for Transportation PlanningCompleted
NCHRP 08-49(02)Right of Way Methods and Tools to Control Project Cost EscalationFinal
NCHRP 08-50Factors that Support the Planning-Programming LinkageFinalCompleted and published as NCHRP Report 591
NCHRP 08-51Enhancing Internal Trip Capture Estimation for Mixed-Use DevelopmentsCompleted
NCHRP 08-52Best Practices to Enhance the Transportation/Land-Use Connection in Rural AmericaCompleted
NCHRP 08-53Integrating Freight into Transportation Planning and Project-Selection ProcessesFinalPublished as NCHRP Report 594
NCHRP 08-54Identification of Liability-Related Impediments to Sharing 409 Safety Data Among Transportation Agencies, and Synthesis of Best PracticesFinal
NCHRP 08-55Integrating Geo-Spatial Technologies into the Right-of-Way Data-Management ProcessCompleted
NCHRP 08-55ADeveloping a Logical Model for a Geo-Spatial Right-Of-Way Land Management SystemCompleted The final report is available as NCHRP Report 695 and CD-ROM 99.
NCHRP 08-56Truck Noise-Source MappingCompletedPublished as NCHRP Report 635
NCHRP 08-57Assessing Highway Tolling and Pricing Options and Impacts: Vol. 1: Decision-Making Framework; Vol. 2: Travel Demand Forecasting ToolsFinal
NCHRP 08-58Development of a Multimodal Statewide Corridor Planning GuidebookFinal
NCHRP 08-59Transportation Cost Implications of New DevelopmentCompletedThe revised final report has been received and posted on the NCHRP website
NCHRP 08-60Guidebook on Risk Analysis Tools and Management Practices to Control Transportation Project CostFinal
NCHRP 08-61Travel Demand Forecasting: Parameters and TechniquesFinalPublished as NCHRP Report 716.
NCHRP 08-62Transportation Performance Management: Insight from PractitionersFinal
NCHRP 08-63Review of Canadian Experience with Large Commercial Motor VehiclesCompleted
NCHRP 08-64A Guidebook on Improved Principles, Processes, and Methods for Shared-Use Passenger and Freight Rail CorridorsCompleted
NCHRP 08-65Guidebook for Successful Communication, Cooperation, and Coordination Strategies Between Transportation Agencies and Tribal Communities Completed
NCHRP 08-66Trip-Generation Rates for Transportation Impact Analyses of Infill DevelopmentsCompleted
NCHRP 08-67Measuring Transportation Network PerformanceFinal
NCHRP 08-68Citizen’s Guide and Discipline-Specific Professionals’ Guide for Context-Sensitive Solutions in TransportationFinal
NCHRP 08-69Supplement to the AASHTO Transportation Asset Management Guide: Volume 2 - A Focus on ImplementationFinalFinal Report received and will be published by AASHTO
NCHRP 08-70Target-Setting Methods and Data Management To Support Performance-Based Resource Allocation by Transportation AgenciesFinal
NCHRP 08-71Methodology for Estimating Life Expectancies of Highway AssetsFinal
NCHRP 08-72Practical Approaches for Involving Traditionally Underserved Populations in Transportation DecisionmakingFinal
NCHRP 08-73Road Pricing, Public Perceptions and Program DevelopmentFinalCompleted. Final report published as Report 686.
NCHRP 08-74A Guidebook for Sustainability Performance Measurement for Transportation AgenciesFinal
NCHRP 08-75Guidelines for Evaluation and Performance Measurement of Congestion Pricing Projects CompletedThe final report has been published as NCHRP Report 694.
NCHRP 08-76Institutionalizing Safety in Transportation Planning Processes: Techniques, Tactics and StrategiesFinal
NCHRP 08-77A Model for Identifying and Evaluating the Historic Significance of Post-World War II HousingFinal
NCHRP 08-78Estimating Bicycling and Walking for Planning and Project DevelopmentCompletedCompleted and published as NCHRP Report 770
NCHRP 08-79Producing Transportation Data Products from the American Community Survey that Comply with Disclosure RulesFinalCompleted, Final Report published as Web-Only Document 180
NCHRP 08-80Freight Trip Generation and Land Use (Jointly Funded as NCFRP 25)Active
NCHRP 08-81Improving the Quality of Motorcycle Travel Data CollectionCompletedCompleted - Published as NCHRP Report 760.
NCHRP 08-82Deployment, Use, and Effect of Real-Time Traveler Information SystemsFinalPublished as NCHRP Web-Only Document 192
NCHRP 08-83Analytical Travel Forecasting Approaches for Project-Level Planning and DesignFinalCompleted. Final product is published as NCHRP Report 765 and CD-ROM 143
NCHRP 08-84Long-Distance and Rural Travel Transferable Parameters for Statewide Travel Forecasting ModelsFinalReport published as NCHRP Report 735
NCHRP 08-85The Comprehensive Costs of Highway-Rail At-Grade Crossing CrashesFinal
NCHRP 08-86Capacity Modeling Guiodebook for Shared-Use Passenger and Freight Rail OperationsFinal
NCHRP 08-87Successful Practices in GIS-Based Asset ManagementFinal
NCHRP 08-88Effective Project Scoping Practices to Improve On-Time and On-Budget Delivery of Highway ProjectsFinal
NCHRP 08-89Applying GPS Data to Understand Travel BehaviorFinalPublished as NCHRP Report 775
NCHRP 08-90Transportation Asset Management Gap Analysis ToolCompletedDraft final products deliered to AASHTO; they will publish.
NCHRP 08-91Cross-Asset Resource Allocation and the Impact on System PerformanceFinal
NCHRP 08-92Implementing a Transportation Agency Data Self-Assessment Final
NCHRP 08-93Managing Risk Across the Enterprise: A Guidebook for State Departments of TransportationFinal
NCHRP 08-94Guidelines for Selecting Travel Forecasting Methods and TechniquesCompleted
NCHRP 08-95Cell Phone Location Data for Travel Behavior AnalysisCompleted
NCHRP 08-96Integrating Goods and Services Movement by Commercial Vehicles in Smart Growth EnvironmentsFinalCompleted. Published as NCHRP Report 844.
NCHRP 08-97Finding and Using Data to Identify and Evaluate Corridors for Transporting Multi-state, Multi-modal Oversize/Overweight FreightCompleted
NCHRP 08-98Guide for Identifying, Classifying, Evaluating, and Mitigating Truck Freight BottlenecksFinalComplete. Published as NCHRP Research Report 854.
NCHRP 08-99Methodology for Estimating the Value of Travel Time Reliability for Truck Freight System UsersFinalPublished as NCHRP Report 824.
NCHRP 09-06(01)Asphalt-Aggregate Mixture Analysis System (AAMAS)Completed
NCHRP 09-07Field Procedures and Equipment to Implement SHRP Asphalt SpecificationsCompleted
NCHRP 09-08Designing Stone Matrix Asphalt MixturesCompleted
NCHRP 09-09Refinement of the Superpave Gyratory Compaction ProcedureCompleted
NCHRP 09-09(1)Verification of Gyration Levels in the Ndesign TableCompleted
NCHRP 09-10Superpave Protocols for Modified Asphalt BindersCompleted
NCHRP 09-11Segregation in Hot-Mix Asphalt PavementsCompleted
NCHRP 09-12Incorporation of Reclaimed Asphalt Pavement in the Superpave SystemCompleted
NCHRP 09-13Evaluation of Water Sensitivity TestsCompleted
NCHRP 09-14Investigation of the Restricted Zone in the Superpave Aggregate Gradation SpecificationCompleted
NCHRP 09-15Quality Characteristics and Test Methods for Use in Performance-Related Specifications of Hot-Mix Asphalt PavementsCompleted
NCHRP 09-16Relationship Between Superpave Gyratory Compaction Properties and Permanent Deformation of Pavements in ServiceCompleted
NCHRP 09-17Accelerated Laboratory Rutting Tests: Asphalt Pavement AnalyzerCompleted
NCHRP 09-18Field Shear Test for Hot Mix AsphaltCompleted
NCHRP 09-19Superpave Support and Performance Models ManagementCompleted
NCHRP 09-20Performance-Related Specifications for Hot-Mix Asphalt ConstructionCompleted
NCHRP 09-21Advisory Structure for Superpave Implementation and Related ResearchCompleted
NCHRP 09-22Beta Testing and Validation of HMA PRSCompletedThe project final report is available as NCHRP Report 704.
NCHRP 09-22AEvaluation of the Quality-Related Specification Software (QRSS) Version 1.0Completed
NCHRP 09-22BComparing HMA Dynamic Modulus Measured by Axial Compression and IDT MethodsCompleted
NCHRP 09-23Environmental Effects in Pavement Mix and Structural Design SystemsCompleted
NCHRP 09-23AImplementing a National Catalog of Subgrade Soil-Water Characteristic Curve (SWCC) Default Inputs for Use with the MEPDGCompleted
NCHRP 09-23BIntegrating the National Database of Subgrade Soil-Water Characteristic Curves and Soil Index Properties With the MEPDGCompleted
NCHRP 09-25Requirements for Voids in Mineral Aggregate for Superpave MixturesCompleted
NCHRP 09-26Precision Statements for AASHTO T312 and other Laboratory Test MethodsCompleted
NCHRP 09-26AData Mining and Interlaboratory Studies to Prepare Precision Statements for AASHTO StandardsCompletedWork of this type for the AASHTO Highway Subcommittee on Materials is now conducted in NCHRP Project 10-87.
NCHRP 09-27Relationships of HMA In-Place Air Voids, Lift Thickness, and PermeabilityCompleted
NCHRP 09-29Simple Performance Tester for Superpave Mix DesignCompleted
NCHRP 09-30Experimental Plan for Calibration and Validation of HMA Performance Models for Mix and Structural DesignCompleted
NCHRP 09-30ACalibration of Rutting Models for HMA Structural and Mix DesignCompletedThe project final report is available as NCHRP Report 719.
NCHRP 09-31Air Void Requirements for Superpave Mix DesignCompleted
NCHRP 09-33A Mix Design Manual for Hot Mix AsphaltCompletedThe mix design manual is available as NCHRP Reports 673 and 714.
NCHRP 09-33AAdapting SPT Specification Criteria to HMA Mix DesignCompletedThe final report is available as NCHRP Web-Only Document 157.
NCHRP 09-34Improved Conditioning Procedure for Predicting the Moisture Susceptibility of HMA PavementsCompleted
NCHRP 09-35Aggregate Properties and Their Relationship to the Performance of Superpave-Designed HMA: A Critical ReviewCompleted
NCHRP 09-36Improved Procedure for Laboratory Aging of Asphalt Binders in PavementsCompletedThe project final report is available as NCHRP Project 709.
NCHRP 09-37Using Surface Energy Measurements To Select Materials for Asphalt PavementsCompleted
NCHRP 09-38Endurance Limit of Hot Mix Asphalt Mixtures to Prevent Fatigue Cracking in Flexible PavementsCompletedThe project final report is available as NCHRP Report 646.
NCHRP 09-39Procedure for Determining Mixing and Compaction Temperatures of Asphalt Binders in Hot Mix AsphaltCompletedThe project final report is available as NCHRP Report 648.
NCHRP 09-40Optimization of Tack Coat for HMA PlacementCompletedThe project final report is available as NCHRP Report 712.
NCHRP 09-41Performance and Maintenance of Permeable Friction CoursesCompleted
NCHRP 09-42History of Superpave: Documenting the Research Program and Implementation ProcessCompletedThe project final report is available as NCHRP Web-Only Document 186.
NCHRP 09-43Mix Design Practices for Warm Mix AsphaltCompletedThe project final report is available as NCHRP Reports 691 and 714.
NCHRP 09-44Developing a Plan for Validating an Endurance Limit for HMA PavementsCompleted
NCHRP 09-44AValidating an Endurance Limit for HMA Pavements: Laboratory Experiment and Algorithm DevelopmentCompletedThe project final report is available as NCHRP Report 762.
NCHRP 09-45Test Methods and Specification Criteria for Mineral Filler Used in HMACompletedA summary of the project final report is available as NCHRP Research Results Digest 357.
NCHRP 09-46Improved Mix Design, Evaluation, and Materials Management Practices for Hot Mix Asphalt with High Reclaimed Asphalt Pavement ContentCompletedThe project final report is available as NCHRP Report 752.
NCHRP 09-47Engineering Properties, Emissions, and Field Performance of Warm Mix Asphalt TechnologiesCompletedPhase II of this project will be accomplished as NCHRP Project 9-47A.
NCHRP 09-47AProperties and Performance of Warm Mix Asphalt TechnologiesCompleted
NCHRP 09-48Field versus Laboratory Volumetrics and Mechanical PropertiesCompleted
NCHRP 09-49Performance of WMA Technologies: Stage I--Moisture SusceptibilityCompletedThe project final reports are available as NCHRP Reports 763 and 817.
NCHRP 09-49APerformance of WMA Technologies: Stage II--Long-Term Field PerformanceCompleted
NCHRP 09-50Performance-Related Specifications for Asphaltic Binders Used in Preservation Surface TreatmentsCompleted
NCHRP 09-51Material Properties of Cold In-Place Recycled and Full-Depth Reclamation Asphalt Concrete for Pavement DesignCompleted
NCHRP 09-52Short-Term Laboratory Conditioning of Asphalt MixturesCompleted
NCHRP 09-53Properties of Foamed Asphalt for Warm Mix Asphalt ApplicationsCompleted
NCHRP 09-54Long-Term Aging of Asphalt Mixtures for Performance Testing and PredictionCompleted
NCHRP 09-55Recycled Asphalt Shingles in Asphalt Mixtures with Warm Mix Asphalt TechnologiesCompleted
NCHRP 09-56Identifying Influences on and Minimizing the Variability of Ignition Furnace Correction FactorsCompleted
NCHRP 09-56AIdentifying Influences on and Minimizing the Variability of Ignition Furnace Correction FactorsCompletedPublication Pending
NCHRP 09-57Experimental Design for Field Validation of Laboratory Tests to Assess Cracking Resistance of Asphalt MixturesCompleted
NCHRP 09-57ARuggedness of Laboratory Tests to Assess Cracking Resistance of Asphalt MixturesCompletedPublication Decision Pending
NCHRP 09-58The Effects of Recycling Agents on Asphalt Mixtures with High RAS and RAP Binder RatiosCompleted
NCHRP 09-59Relating Asphalt Binder Fatigue Properties to Asphalt Mixture Fatigue PerformanceFinalPublished as NCHRP Research Report 982
NCHRP 09-60Addressing Impacts of Changes in Asphalt Binder Formulation and Manufacture on Pavement Performance through Changes in Asphalt Binder SpecificationsActive
NCHRP 09-61Short- and Long-Term Binder Aging Methods to Accurately Reflect Aging in Asphalt MixturesCompleted
NCHRP 09-62Rapid Tests and Specifications for Construction of Asphalt-Treated Cold Recycled PavementsCompletedPublication pending
NCHRP 09-63A Calibrated and Validated National Performance-Related Specification for Emulsified Asphalt BinderActive
NCHRP 09-64Developing Laboratory Methods and Specifications to Test Tack Coat MaterialsCompletedPublication decision pending.
NCHRP 09-65Capturing Durability of High Recycled Binder Ratio (RBR) Asphalt MixturesActive
NCHRP 09-66Performance Properties of Laboratory Produced Recycled Plastic Modified (RPM) Asphalt Binders and MixturesActive
NCHRP 09-67New Materials & Technology Deployment in Asphalt Pavement Structural DesignAnticipated
NCHRP 09-68Recycled Asphalt Materials: Binder Availability and Its Impact on Mix PerformanceActiveResearch in progress
NCHRP 09-69Verifying Quantities of Materials Used in Asphalt Mixtures at Production FacilitiesActive
NCHRP 10-100Procedures and Guidelines for Validating Contractor Test DataFinal
NCHRP 10-101Improving Mid-Term, Intermediate, and Long-Range Cost Forecasting: Guidance for State Departments of TransportationFinal
NCHRP 10-102A Guidebook for Risk-Based Construction InspectionCompletedThe Guide will be published as NCHRP Research Report 1039 and the Final Report will be published as NCHRP Web-Only Document 344
NCHRP 10-103Improving Guidance of AASHTO R 80/ASTM C 1778 for Alkali-Silica Reactivity (ASR) Potential and MitigationActive
NCHRP 10-104Recommendations for Revision of AASHTO M 295 Standard Specification to Include Marginal and Unconventional Source Coal Fly AshesActive
NCHRP 10-105Verification of Traffic Speed Deflection Devices’ (TSDDs) MeasurementsActive
NCHRP 10-106Update of AASHTO Standard Practice for Certification of Inertial Profiling Systems (R 56)Completed
NCHRP 10-107Guide for Implementing Performance SpecificationsActive
NCHRP 10-108Manual for Incorporating Nondestructive Testing (NDT) in Quality Assurance of Highway Pavement ConstructionActive
NCHRP 10-109Modern Solutions to Safe and Efficient Work Zone TravelActiveResearch in progress.
NCHRP 10-1103D Modeling Guide for Construction InspectionActiveResearch in progress.
NCHRP 10-111Guide for 3D Model Viewers for Construction InspectionPending
NCHRP 10-112Guidelines for Digital Technologies and Systems for Remote Construction Inspection for Highway Infrastructure ProjectsPending
NCHRP 10-113Quality Management for 3D Model-Based Project Development and DeliveryActiveThe research team completed Phase I.
NCHRP 10-114Developing Performance and Safety Specifications for Rejuvenating SealsActiveResearch in progress.
NCHRP 10-115Guide on Progressive Design-Build for Transportation ProjectsPending
NCHRP 10-116Quantifying Variability in Quality Characteristics of PavementsPending
NCHRP 10-117Design and Repair of Glass Fiber Reinforced Polymer Concrete Bridge BarriersRFP
NCHRP 10-118Guidance for Efficient Timelines and Incentives/Disincentives for Accelerated Bridge Construction ProjectsAnticipated
NCHRP 10-119Guidance for Implementing Utility Investigations in Alignment with Project DeliveryRFP
NCHRP 10-120Guide for Incorporating Right-of-Way and Utilities into Value Engineering StudiesPending
NCHRP 10-121Guidelines for the Application of Ground Modification Methods for Highway StructuresPending
NCHRP 10-122Cost Estimating Practices for Highway ProjectsPending
NCHRP 10-123Incorporating Quality Assurance into Green Public Procurement Practices RFP
NCHRP 10-124Development of a Field Test to Determine Chip Seal Aggregate EmbedmentRFP
NCHRP 10-125Update Bridge Construction RequirementsRFP
NCHRP 10-13Ultrasonic Measurement of Weld Flaw SizeCompleted
NCHRP 10-17Use of Antistripping Additives in Asphaltic Concrete MixturesCompleted
NCHRP 10-20Elastomeric Bearings Design, Construction, and MaterialsCompleted
NCHRP 10-20AHigh-Load, Multi-Rotational Bridge Bearings: Design, Materials, and ConstructionCompleted
NCHRP 10-22The Performance of Weathering Steel in BridgesCompleted
NCHRP 10-25AInstantaneous Determination of Water-Cement Ratio in Fresh ConcreteCompleted
NCHRP 10-26Performance-Related Specifications for Hot-Mix Asphaltic ConcreteCompleted
NCHRP 10-27Determination of Asphaltic Concrete Pavement Structural Properties by Nondestructive TestingCompleted
NCHRP 10-29Anchorage Zone Reinforcement for Post-Tensioned Concrete GirdersCompleted
NCHRP 10-30(3)Nondestructive Methods for Field Inspection of Embedded or Encased High Strength Steel Rods and CablesCompleted
NCHRP 10-31Acceptance Criteria for Steel Bridge WeldsCompleted
NCHRP 10-32ADurability Testing of High-Strength Concrete Containing High-Range Water-Reducing AdmixturesCompleted
NCHRP 10-33Potential Benefits of Geosynthetics in Flexible Pavement SystemsCompleted
NCHRP 10-34Transient Protection, Grounding, and Shielding of Electronic Traffic Control EquipmentFinal
NCHRP 10-35Fatigue Behavior of Welded and Mechanical Splices in Reinforcing SteelCompleted
NCHRP 10-36Evaluation of Weldments Incorporating Backing MaterialsCompleted
NCHRP 10-37Performance of Epoxy-Coated Reinforcing Steel in Highway BridgesCompleted
NCHRP 10-37APerformance of Epoxy-Coated Reinforcing Steel--Laboratory TestingCompleted
NCHRP 10-37BA Protocol for the Evaluation of Existing Bridges Containing Epoxy-Coated Reinforcing SteelCompleted
NCHRP 10-37CRepair and Rehabilitation of Bridge Components Containing Epoxy-Coated ReinforcementCompleted
NCHRP 10-38Fatigue-Resistant Design of Cantilevered Signal, Sign, and Light SupportsCompleted
NCHRP 10-38(2)Fatigue-Resistant Design of Cantilevered Signal, Sign, and Light Supports Completed
NCHRP 10-39Construction Testing and Inspection LevelsCompleted
NCHRP 10-39ATesting and Inspection Levels for Hot-Mix Asphaltic Concrete OverlaysCompleted
NCHRP 10-40Plasma Arc Cutting of Bridge SteelsCompleted
NCHRP 10-41Evaluation of Unbonded Portland Cement Concrete OverlaysCompleted
NCHRP 10-42Constructibility Review Process for Transportation FacilitiesCompleted
NCHRP 10-43Movable Bridge Inspection, Evaluation, and MaintenanceCompleted
NCHRP 10-44Nondestructive Testing to Determine Insitu Material Properties of Pavement LayersCompleted
NCHRP 10-44ADetermination of Insitu Material Properties of Asphalt Concrete Pavement LayersCompleted
NCHRP 10-45Procedures for Evaluating Corrosion-Inhibiting Admixtures for Structural ConcreteCompleted
NCHRP 10-46Corrosion of Steel Piling in Nonmarine ApplicationsCompleted
NCHRP 10-47Guidelines for Longitudinal Pavement Profile MeasurementCompleted
NCHRP 10-48Assessing Pavement Layer Condition Using Deflection DataCompleted
NCHRP 10-49Improved Contracting Methods for Highway Construction ProjectsCompleted
NCHRP 10-50Strategies for Rehabilitating Rigid Pavements Subjected to High-Traffic Volumes Completed
NCHRP 10-50AGuidelines for Selecting Strategies for Rehabilitating Rigid Pavements Subjected to High-Traffic VolumesCompleted
NCHRP 10-51Performance-Related Specifications for Elastomeric Bridge BearingsCompleted
NCHRP 10-52Performance Tests for Modular Bridge JointsCompleted
NCHRP 10-53Condition Evaluation of Prestressed Steel Strands in Concrete BridgesCompleted
NCHRP 10-54Quality-Based Performance Rating of Contractors for Prequalification and Bidding PurposesCompleted
NCHRP 10-55Fiber Reinforced Polymer Composites for Concrete Bridge Deck Reinforcement Completed
NCHRP 10-56Accelerated Pavement Testing: Data GuidelinesCompleted
NCHRP 10-57Structural Safety Evaluation Guidelines for Suspension Bridge Parallel-Wire CablesCompleted
NCHRP 10-58Construction Engineering and Management Research ProgramCompleted
NCHRP 10-58(01)Time-Related Incentive and Disincentive Provisions in Highway Construction ContractsCompletedNCHRP Report 652 Time-Related Incentive and Disincentive Provisions in Highway Construction Contracts.
NCHRP 10-58(02)Using Contractor-Performed Tests in Quality AssuranceCompletedNCHRP Research Results Digest 323: Using the Results of Contractor-Performed Tests in Quality Assurance
NCHRP 10-59AConstruction Specifications for Bonded Repair and Retrofit of Concrete Structures Using FRP CompositesCompleted
NCHRP 10-60Avoiding Delays in Constructing Highway Projects (CANCELED)Completed
NCHRP 10-61Best-Value Procurement Methods for Highway Construction ProjectsCompletedNCHRP Report 561: Best-Value Procurement Methods for Highway Construction Projects
NCHRP 10-62Acceptance Tests for Surface Characteristics of Steel Strands in Pre-Stressed ConcreteCompletedThe project final report is available as NCHRP Report 621.
NCHRP 10-63Heat-Straightening Repair of Damaged Steel Bridge Girders: Fatigue and Fracture PerformanceCompletedThe project final report is available as NCHRP Report 604.
NCHRP 10-64Field Inspection of In-Service FRP Bridge DecksCompleted
NCHRP 10-65Nondestructive Testing Technology for Quality Control and Acceptance of Flexible Pavement ConstructionCompletedThe project final report is available as NCHRP Report 626, NDT Technology for Quality Assurance of HMA Pavement Construction.
NCHRP 10-66Predicting In-Service Performance of Flexible Pavements from Accelerated Pavement TestingCompleted
NCHRP 10-67Texturing of Concrete PavementsCompleted
NCHRP 10-68Guidelines for the Use of Highway Pavement WarrantiesCompletedNCHRP Report 699: Guidelines for the Use of Highway Pavement Warranties
NCHRP 10-69Guidelines for Dowel Alignment in Concrete PavementsCompleted
NCHRP 10-70Cost-Effective Connection Details for Highway Sign, Luminaire, and Traffic Signal StructuresFinal
NCHRP 10-71Evaluation of CIP Reinforced Joints for Full-Depth Precast Concrete Bridge Decks Final
NCHRP 10-72Bridge Deck Design Criteria and Testing ProceduresCompleted
NCHRP 10-73Guide Specification for the Design of Externally Bonded FRP Systems for Repair and Strengthening of Concrete Bridge ElementsCompleted
NCHRP 10-74Development of Fatigue Loading and Design Methodology for High-Mast Lighting PolesFinalPublished as NCHRP Report 718
NCHRP 10-75Guide for Pavement-Type SelectionCompleted
NCHRP 10-76Methodologies for Evaluating Pavement Strategies and Barriers for Noise MitigationCompleted
NCHRP 10-77Use of Automated Machine Guidance (AMG) within the Transportation IndustryFinal
NCHRP 10-78Nighttime Construction Impacts on Safety, Quality, and ProductivityCompletedNCHRP Report 726: A Guidebook for Nighttime Construction: Impacts on Safety, Quality, and Productivity
NCHRP 10-79Guidelines for Quality-Related Pay Adjustment Factors for PavementsCompleted
NCHRP 10-80New Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals Final
NCHRP 10-81Fuel Usage Factors in Highway and Bridge ConstructionCompletedThe project final report is available as NCHRP Report 744.
NCHRP 10-82Performance-Related Specifications for Pavement Preservation Treatments - Phase ICompleted
NCHRP 10-82APerformance-Related Specifications for Pavement Preservation TreatmentsCompleted
NCHRP 10-83Alternative Quality Management Systems for Highway ConstructionFinalCompleted. Published as NCHRP Report 808..
NCHRP 10-84Modulus-Based Construction Specification for Compaction of Earthwork and Unbound AggregateCompleted
NCHRP 10-85A Guidebook for Construction Manager-at-Risk Contracting for Highway ProjectsFinalCompleted. The Contractor's Final Report was published by AASHTO.
NCHRP 10-86Bidding Alternative Drainage Pipe SystemsCompleted
NCHRP 10-86ASoftware for Bidding Alternative Drainage Pipe SystemsCompleted
NCHRP 10-87Precision Statements for AASHTO Standard Methods of TestCompleted
NCHRP 10-88Developing Precision and Bias Statements for AASHTO Standard Methods of Test TP 98 and TP 99Completed
NCHRP 10-89Best Practices Guidebook for Optimal Construction InspectionCompletedProject terminated. No report.
NCHRP 10-91ASustainable Highway Construction PracticesFinal
NCHRP 10-92Optimizing the Risk and Cost of Materials QA ProgramsCompleted
NCHRP 10-93Measuring, Characterizing, and Reporting Pavement Roughness of Low-Speed and Urban RoadsCompleted
NCHRP 10-94Mitigation of Weldment Cracking of Highway Steel Structures due to the Galvanizing ProcessFinal
NCHRP 10-95Toughness Requirements for Heat-Affected Zones of Welded Structural Steels for Highway Bridges - Phase ICompleted
NCHRP 10-95AToughness Requirements for Heat-Affected Zones of Welded Structural Steels for Highway BridgesCompleted
NCHRP 10-96Guide for Civil Integrated Management (CIM) in Departments of TransportationFinal
NCHRP 10-97Detection and Remediation of Soluble Salt Contamination Prior to Coating Steel Highway StructuresCompleted
NCHRP 10-98Protocols for Network-Level Macrotexture MeasurementFinalFinal report published as NCHRP Research Report 964.
NCHRP 10-99Guidebook for Implementing Constructability Across the Entire Project Development Process: NEPA to Final DesignCompletedResearch is complete. Final report under review.
NCHRP 11-07National Data-Management System for Highway Tort ClaimsCompleted
NCHRP 11-08Improving Rights-of-Way Acquisition and Compensation Practices for Utility RelocationCompleted
NCHRP 12-100Guidelines for Maintaining Small Movement Bridge Expansion JointsFinalPublished as AASHTO Guidelines for Maintaining Small Movement Bridge Expansion Joints, 1st Edition
NCHRP 12-101Seismic Evaluation of Bridge Columns with Energy Dissipating MechanismsFinalTwo Volumes: Volume 1: Research Overview and Volume 2: Guidelines
NCHRP 12-102Recommended AASHTO Guide Specification for ABC Design and ConstructionFinal
NCHRP 12-102AAASHTO Guide Specification for ABC Design and Construction--Implementation WorkshopsCompletedThe agency’s training modules are available for download.
NCHRP 12-103Bridge Superstructure Tolerance to Total and Differential Foundation MovementsFinal
NCHRP 12-104Guidelines to Improve the Quality of Element-Level Bridge Inspection DataFinal
NCHRP 12-105Proposed AASHTO Seismic Specifications for ABC Column Connections Final
NCHRP 12-106Proposed Guidelines for Performance-Based Seismic Bridge DesignFinal
NCHRP 12-107Proposed AASHTO Bridge Guidelines for Use of ASTM A1010 SteelFinalAASHTO Special Committee on Research and Innovation (R&I) decided to cancel this project and reallocate project funds to other NCHRP projects
NCHRP 12-108Guide Specification for Service Life Design of Highway BridgesFinal
NCHRP 12-109Use of 0.7-in. Diameter Strands in Precast Pretensioned GirdersFinalPublished as NCHRP Research Report 994
NCHRP 12-110Proposed New AASHTO Load Rating Provisions for Implements of HusbandryFinal
NCHRP 12-111Evaluating the Effectiveness of Vibration-Mitigation Devices for Structural Supports of Signs, Luminaires, and Traffic SignalsCompletedResearch Complete. Publication Decision Pending.
NCHRP 12-112Update of the AASHTO LRFD Movable Highway Bridge Design SpecificationsFinal
NCHRP 12-113Proposed Modification to AASHTO Cross-Frame Analysis and DesignCompletedPhase I is published as NCHRP Research Report 962. Phase II will be published as NCHRP Research Report 1045.
NCHRP 12-114Guidance on Seismic Site Response Analysis with Pore Water Pressure GenerationActiveThe draft final deliverables have been received.
NCHRP 12-115Guidelines for Risk-Based Inspection and Strength Evaluation of Suspension Bridge Main Cable SystemsCompletedThe Final Report has been published as NCHRP Web-Only Document 353. The Guidelines have been forwarded to AASHTO COBS Technical Committee on Bridge Management.
NCHRP 12-116Proposed AASHTO Specifications for Design of Piles for DowndragFinalFurther work will be conducted under NCHRP 12-116A in 2020
NCHRP 12-116AProposed AASHTO Specifications for Design of Piles for DowndragActive
NCHRP 12-117Guidelines for Corrosion Protection of Steel Bridges Using Duplex Coating SystemsCompletedThe Final Report will be published as NCHRP Report 1048. The Guidelines have been forwarded to AASHTO COBS Technical Committee on Bridge Preservation
NCHRP 12-118Design and Construction Specifications for Bonded and Unbonded Post-Tensioned Concrete Bridge ElementsActive
NCHRP 12-119MASH Railing Load Requirements for Bridge Deck OverhangActiveThe research team requested a no-cost contract extension with a proposed completion of 05/31/2023
NCHRP 12-120Stainless Steel Strands for Prestressed Concrete Bridge ElementsActive
NCHRP 12-121Guidelines for the Design of Prestressed Concrete Bridge Girders Using FRP Auxiliary ReinforcementActive
NCHRP 12-122Proposed AASHTO Guidelines for Applications of Unmanned Aerial Systems Technologies for Element-Level Bridge InspectionActiveThe research team is proceeding with Phase III, guidelines development.
NCHRP 12-123Proposed AASHTO Guideline for Load Rating of Segmental BridgesActive
NCHRP 12-124Design of Stud Shear Connectors in Composite Steel BridgesActive
NCHRP 12-125Earthquake-Induced Bridge DisplacementsPendingProposals have been received in response to the RFP.  The project panel will meet in January 2023 to select a contractor to perform the work.
NCHRP 12-15(5)Fatigue Behavior of Variable Loaded Bridge Details Near the Fatigue LimitFinal
NCHRP 12-23Recommended Revisions to the AASHTO Manual for Maintenance Inspection of BridgesCompleted
NCHRP 12-26(2)Distribution of Wheel Loads on Highway BridgesCompleted
NCHRP 12-27Welded Repair of Cracks in Steel Bridge MembersCompleted
NCHRP 12-28(01)Load Capacity Evaluation of Existing BridgesCompleted
NCHRP 12-28(02)Bridge Management SystemsCompleted
NCHRP 12-28(02)ABridge Management Systems SoftwareCompleted
NCHRP 12-28(02)BBridge Management Systems SoftwareCompleted
NCHRP 12-28(02)CConversion of BRIDGIT Bridge Management Software to WindowsCompleted
NCHRP 12-28(03)Fatigue Evaluation Procedures for Steel BridgesCompleted
NCHRP 12-28(06)Distortion-Induced Fatigue Cracking in Steel BridgesCompleted
NCHRP 12-28(07)Guidelines for Evaluating Corrosion Effects in Existing Steel BridgesCompleted
NCHRP 12-28(10)Guidelines for Determining Redundancy in Steel BridgesCompleted
NCHRP 12-28(11)Development of Site-Specific Load Models for Bridge RatingCompleted
NCHRP 12-28(12)Inelastic Rating Procedures for Steel Beam and Girder BridgesCompleted
NCHRP 12-28(13)Nondestructive Load Testing for Bridge Evaluation and RatingCompleted
NCHRP 12-28(13)A Bridge Rating Through Nondestructive Load TestingCompleted
NCHRP 12-29Design of Simple-Span Precast Prestressed Bridge Girders Made ContinuousCompleted
NCHRP 12-30Fatigue of Cables in Cable-Stayed BridgesCompleted
NCHRP 12-31Notch Toughness Variability in Bridge Steel PlatesFinal
NCHRP 12-33Development of a Comprehensive Bridge Specification and CommentaryCompleted
NCHRP 12-33ADevelopment of a Comprehensive Bridge Specification and Commentary---Timber Structures and Code CalibrationCompleted
NCHRP 12-33BDevelopment of a Comprehensive Bridge Specification and Commentary---Concrete StructuresCompleted
NCHRP 12-33CDevelopment of a Comprehensive Bridge Specification and Commentary---Soil-Structure Interaction SystemsCompleted
NCHRP 12-34Update of AASHTO Standard Specifications for Highway Bridges: Division II---ConstructionCompleted
NCHRP 12-35Recommended Specifications for the Design of Foundations, Retaining Walls, and SubstructuresCompleted
NCHRP 12-36Redundancy in Highway Bridge SuperstructuresCompleted
NCHRP 12-36(2)Redundancy in Highway Bridge Superstructures: Phase 2Completed
NCHRP 12-37Transverse Cracking in Newly Constructed Bridge DecksCompleted
NCHRP 12-38Improved Design Specifications for Horizontally Curved Steel Girder Highway BridgesCompleted
NCHRP 12-39Design Specifications for Debris Forces on Highway BridgesCompleted
NCHRP 12-40Fatigue Criteria for Modular Bridge Expansion JointsFinal
NCHRP 12-41Rapid Replacement of Bridge DecksCompleted
NCHRP 12-42LRFD Bridge Design Specifications SupportCompleted
NCHRP 12-43Life-Cycle Cost Analysis for BridgesCompleted
NCHRP 12-44Recommended Specifications for the Design of Movable Highway BridgesCompleted
NCHRP 12-45Recommended Specifications for Large-Span CulvertsCompleted
NCHRP 12-46Manual for Condition Evaluation and Load Rating of Highway Bridges Using Load and Resistance Factor PhilosophyCompleted
NCHRP 12-47Redundancy in Highway Bridge SubstructuresCompleted
NCHRP 12-48Design of Highway Bridges for Extreme EventsCompleted
NCHRP 12-49Comprehensive Specification for the Seismic Design of BridgesCompleted
NCHRP 12-50Bridge Software-Validation Guidelines and ExamplesCompleted
NCHRP 12-51Effect of Truck Weight on Bridge Network CostsCompleted
NCHRP 12-52LRFD Specifications for Horizontally Curved Steel Girder Highway BridgesCompleted
NCHRP 12-53Connection Between Simple-Span Precast Concrete Girders Made ContinuousCompleted
NCHRP 12-54Integral Connections of Steel Bridge StructuresCompleted
NCHRP 12-55Load and Resistance Factors for Earth Pressures on Bridge Substructures and Retaining WallsCompleted
NCHRP 12-55ALoad and Resistance Factors for Earth Pressures on Bridge Substructures and Retaining WallsCompleted
NCHRP 12-56Application of the LRFD Bridge Design Specifications to High-Strength Structural Concrete: Shear ProvisionsCompleted
NCHRP 12-57Extending Span Ranges of Precast, Prestressed Concrete GirdersCompleted
NCHRP 12-58Effective Slab Width for Composite Steel Bridge MembersCompleted
NCHRP 12-59Design and Construction of Geosynthetic-Reinforced Soil (GRS) Abutments for Bridge SupportCompletedNCHRP Report 556: Design and Construction Guidelines for Geosynthetic-Reinforced Soil Bridge Abutments with a Flexible Facing
NCHRP 12-59(01)Seismic Design of Geosynthetic-Reinforced Soil (GRS) Bridge Abutments with Flexible FacingCompleted
NCHRP 12-60Transfer, Development, and Splice Length for Strand/Reinforcement in High-Strength ConcreteCompleted
NCHRP 12-61Simplified Shear Design of Structural Concrete MembersCompleted
NCHRP 12-62Simplified Live-Load Distribution-Factor EquationsCompleted
NCHRP 12-62ASimplified Live Load Distribution-Factor Equations-Phase IICompleted
NCHRP 12-63Legal Truck Loads and AASHTO Legal Loads for PostingCompleted
NCHRP 12-64Application of the LRFD Bridge Design Specifications to High-Strength Structural Concrete: Flexure and Compression ProvisionsCompleted
NCHRP 12-65Full-Depth, Precast-Concrete Bridge Deck Panel SystemsCompleted
NCHRP 12-66AASHTO LRFD Specifications for Serviceability in the Design of Bridge FoundationsFinalContract was terminated on October 24, 2008
NCHRP 12-67Multiple-Objective Optimization for Bridge Management SystemsCompleted
NCHRP 12-68Improved Rotational Limits of Elastomeric BearingsCompleted
NCHRP 12-69Design and Construction Guidelines for Long-Span Decked Precast, Prestressed Concrete Girder BridgesCompleted
NCHRP 12-70Seismic Analysis and Design of Retaining Walls, Buried Structures, Slopes, and EmbankmentsFinal
NCHRP 12-71Design Specifications and Commentary for Horizontally Curved Concrete Box-Girder Highway BridgesCompleted
NCHRP 12-72Blast-Resistant Highway Bridges: Design and Detailing GuidelinesFinal
NCHRP 12-73Design Guidelines for Durability of Bonded CFRP Repair/Strengthening of Concrete BeamsCompleted
NCHRP 12-74Development of Precast Bent Cap Systems for Seismic RegionsFinal
NCHRP 12-75Design of FRP Systems for Strengthening Concrete Girders in ShearCompleted
NCHRP 12-76Protocols for Collecting and Using Traffic Data in Bridge DesignFinal
NCHRP 12-77Structural Concrete Design with High-Strength Steel ReinforcementFinal
NCHRP 12-78Evaluation of Load Rating by Load and Resistance Factor RatingFinal
NCHRP 12-79Guidelines for Analytical Methods and Erection Engineering of Curved and Skewed Steel Deck-Girder BridgesFinalPublished as NCHRP Report 725
NCHRP 12-80LRFD Minimum Flexural Reinforcement RequirementsFinal
NCHRP 12-81Evaluation of Fatigue on the Serviceability of Highway BridgesFinalPublished as NCHRP Report 721
NCHRP 12-82Developing Reliability-Based Bridge Inspection PracticesFinalNCHRP 12-82(01)—Phase II started on November 26, 2012 and has an anticipated termination date of March 25, 2014. Phase II Funds is $149,542
NCHRP 12-82(01)Developing Reliability-Based Bridge Inspection Practices: Case StudiesFinal
NCHRP 12-83Calibration of LRFD Concrete Bridge Design Specifications for ServiceabilityFinal
NCHRP 12-84Guidelines for the Load and Resistance Factor Design and Rating of Riveted and Bolted Gusset-Plate Connections for Steel BridgesFinal
NCHRP 12-85Highway Bridge Fire Hazard AssessmentFinalThe agency's final deliverables are available for download
NCHRP 12-86Bridge System Safety and RedundancyFinal
NCHRP 12-87Fracture-Critical System Analysis for Steel BridgesFinal
NCHRP 12-87AFracture-Critical System Analysis for Steel BridgesFinal
NCHRP 12-88Synthesis on System Performance of Accelerated Bridge Construction Connections in Moderate-to-High Seismic RegionsFinal
NCHRP 12-89Recommended AASHTO LRFD Tunnel Design and Construction SpecificationsFinal
NCHRP 12-90Guidelines for Shielding Bridge Piers FinalThe research report published as NCHRP Research Report 892
NCHRP 12-91Strand Debonding for Pretensioned GirdersFinal
NCHRP 12-92Proposed LRFD Bridge Design Specifications for Light Rail Transit LoadsFinal
NCHRP 12-93Contribution of Steel Casing to Single Shaft Foundation Structural ResistanceFinal
NCHRP 12-94LRFD Minimum Flexural Reinforcement RequirementsFinal
NCHRP 12-95Connection Details of Adjacent Precast Concrete Box Beam Bridges FinalA decision was made to discontinue work on the project beyond Phase I. The remaining work will be conducted in 2017 under NCHRP 12-95A.
NCHRP 12-95AProposed AASHTO Guidelines for Adjacent Precast Concrete Box Beam Bridge SystemsCompletedTo be published as NCHRP Research Report 1026
NCHRP 12-96Simplified Full-Depth Precast Concrete Deck Panel Systems Final
NCHRP 12-97Guide Specification for the Design of Concrete Bridge Beams Prestressed with CFRP SystemsCompleted
NCHRP 12-98Recommended Guidelines for Prefabricated Bridge Elements and Systems Tolerances and Dynamic Effects of Bridge MovesFinal
NCHRP 12-99Guidelines for Calculating Dynamic Effects in Large-Scale Bridge MovesFinalNCHRP Project 12-98 has been expanded in scope and budget to include this project.
NCHRP 13-02Guidelines for Selection and Application of Warning Lights on Roadway-Operations EquipmentCompleted
NCHRP 13-03Decision Making for Outsourcing and Privatization of Vehicle and Equipment Fleet Maintenance - Phase ICompleted
NCHRP 13-03ADecision Making for Outsourcing and Privatization of Vehicle and Equipment Fleet MaintenanceCompleted
NCHRP 13-04Guide for Optimal Replacement Cycles of Highway Operations EquipmentCompleted
NCHRP 13-05Guide for Utilization Measurement and Management of Fleet EquipmentFinal
NCHRP 13-06Guide for the Formulation of Long-Range Plans for Replacement Needs and Budget of Highway Operations Equipment - Phase ICompleted
NCHRP 13-06AGuide for the Formulation of Long-Range Plans and Budgets for Replacement of Highway Operations EquipmentCompleted
NCHRP 13-07Guide to Calculating Ownership and Operating Costs of Department of Transportation Vehicle and Equipment FleetFinal
NCHRP 13-08Guideline for Decision-Making for Repair vs. Replacement of Highway Maintenance EquipmentCompleted
NCHRP 13-09Maximizing Proceeds from the Fleet Asset Disposal Sales ProcessActive
NCHRP 14-07Interactive Microcomputer Network for Innovative Maintenance OperationsCompleted
NCHRP 14-08Chip Seal Coats for High-Traffic-Volume Asphalt Concrete PavementsCompleted
NCHRP 14-08AChip Seal Coats for High-Traffic-Volume Asphalt Concrete PavementsCompleted
NCHRP 14-09(1)Effective Maintenance Budget StrategiesCompleted
NCHRP 14-09(2)Incorporation of Maintenance Considerations in Highway DesignCompleted
NCHRP 14-09(3)Maintenance ContractingCompleted
NCHRP 14-09(4)Role of Highway Maintenance in Integrated Management SystemsCompleted
NCHRP 14-09(5)Impacts of Environmental, Health, and Safety Regulations on Highway MaintenanceCompleted
NCHRP 14-09(6)Professional Development of Maintenance Engineers and ManagersCompleted
NCHRP 14-10Improvements in Data Acquisition Technology for Maintenance Management SystemsCompleted
NCHRP 14-11Effective Motivation of Highway Maintenance PersonnelCompleted
NCHRP 14-11(2)Enhancement to Program for Effective Motivation of Highway Maintenance PersonnelCompleted
NCHRP 14-12Highway Maintenance Quality AssuranceCompleted
NCHRP 14-13Customer-Driven Benchmarking for Highway Maintenance ActivitiesCompleted
NCHRP 14-14Guide for Optimal Timing of Pavement Preventive Maintenance Treatment ApplicationsCompleted
NCHRP 14-15Developing a National Database System for Maintenance Actions on Highway BridgesCompleted
NCHRP 14-16Guidelines for Vegetation ManagementCompletedThe final report has been received and provided to AASHTO for ballot.
NCHRP 14-17Manual for Emulsion-Based Chip Seals for Pavement PreservationCompleted
NCHRP 14-18Determining Highway Maintenance CostsCompleted
NCHRP 14-19Culvert Rehabilitation to Maximize Service Life While Minimizing Direct Costs and Traffic DisruptionFinal
NCHRP 14-20Consequences of Delayed Maintenance - Phase ICompleted
NCHRP 14-20AConsequences of Delayed Maintenance of Highway AssetsCompleted
NCHRP 14-21Resource Allocation Framework to Meet Highway Asset Preservation NeedsFinal
NCHRP 14-22Effective Removal of Pavement MarkingsFinalCompleted. Published as NCHRP Report 759
NCHRP 14-23Practical Bridge Preservation Actions and Investment StrategiesFinalA decision was made to discontinue work on the project beyond Phase II. Further research related to bridge preservation actions will be performed under NCHRP Project 14-36.
NCHRP 14-24Guidance for Communicating the Value of Highway System Maintenance and PreservationFinal
NCHRP 14-25Guide for Selecting Level-of-Service Targets for Maintaining and Operating Highway AssetsCompleted
NCHRP 14-26Culvert and Storm Drain System Inspection ManualFinal
NCHRP 14-27A Guide for the Preservation of Highway Tunnel SystemsFinal
NCHRP 14-28Inspection Guidelines for Bridge Post-Tensioning and Stay Cable Systems Using NDE MethodsFinal
NCHRP 14-29Assessing, Coding, and Marking of Highway Structures in Emergency SituationsCompleted
NCHRP 14-30Spot Painting to Extend Highway Bridge Coating LifeFinal
NCHRP 14-31Developing a Pavement-Maintenance Database SystemCompleted
NCHRP 14-32Proposed Revisions to the AASHTO Movable Bridge Inspection, Evaluation, and Maintenance ManualFinal
NCHRP 14-33Pavement Performance Measures that Consider the Contributions of Preservation TreatmentsCompleted
NCHRP 14-34Guide for Performance Measures in Snow and Ice Control OperationsCompleted
NCHRP 14-35Acceptance Criteria of Complete Joint Penetration Steel Bridge Welds Evaluated Using Enhanced Ultrasonic MethodsFinal
NCHRP 14-36Proposed AASHTO Guide for Bridge Preservation ActionsFinalPublished as NCHRP Research Report 950
NCHRP 14-36(01)Implementation of Bridge Preservation ActionsPendingA research agency has been selected for the project. The contracting process is underway.
NCHRP 14-37Guide Specifications for the Construction of Chip Seals and MicrosurfacingCompleted
NCHRP 14-38Guide for Timing of Asphalt-Surfaced Pavements PreservationCompleted
NCHRP 14-39Using Vegetated Compost Blankets to Achieve Highway Runoff Volume and Pollutant ReductionCompletedResearch is complete. Final report under publication review.
NCHRP 14-40Transforming Roadside Management and Technology Practices for the Benefit of Safety, Ecology, and EconomyFinal
NCHRP 14-41Permanent Vegetation Control Treatments for RoadsidesFinal
NCHRP 14-42Determining the Impact of Connected and Automated Vehicle Technology on State DOT Maintenance ProgramsActiveResearch In Progress
NCHRP 14-43Construction Guide Specifications for Cold Central Plant Recycling and Cold In-Place RecyclingCompletedPublication Pending
NCHRP 14-44Guide Specifications for the Construction of Slurry Seals, Scrub Seals, and Tack CoatsCompleted
NCHRP 14-45Guidelines for Response Planning, Assessment, and Rapid Restoration of Service of Bridges in Extreme EventsActive
NCHRP 14-46Guidelines for the Maintenance and Construction of Rumble StripsActive
NCHRP 14-47Tools and Technology for Roadside Landscape Asset ManagementPending
NCHRP 14-48Guidance for the Construction of Sand Seals and Ultra-thin Bonded Wearing CoursesActive
NCHRP 15-10Development of a Design/Graphics Interface SystemCompleted
NCHRP 15-11Computer-Aided Analysis of Highway Encroachments on Mobile Boundary StreamsCompleted
NCHRP 15-11ABRI-STARS Maintenance Support and EnhancementCompleted
NCHRP 15-12Roadway Widths for Low Traffic Volume RoadsCompleted
NCHRP 15-13Long-Term Performance of Geosynthetics in Drainage ApplicationsCompleted
NCHRP 15-14(1)Intersection Sight DistanceCompleted
NCHRP 15-14(2)Median Intersection DesignCompleted
NCHRP 15-15Collection and Presentation of Roadway Inventory DataCompleted
NCHRP 15-16Superelevation Distribution Methods and Transition DesignsFinal
NCHRP 15-16ASuperelevation Distribution Methods and Transition DesignsFinal
NCHRP 15-17Geometric Design Consistency on Higher-Speed, Non-Urban, Two-Lane RoadsFinal
NCHRP 15-18Design Speed and Operating SpeedFinal
NCHRP 15-19Application of Context-Sensitive Design PrinciplesFinal
NCHRP 15-20Planning, Design, and Operation of Pedestrian FacilitiesFinal
NCHRP 15-21Review of Truck Characteristics as Factors in Roadway DesignCompleted
NCHRP 15-22Safety Consequences of Flexibility in Highway DesignCompleted
NCHRP 15-23Recommended Unit Conversions and Updates of the AASHTO Model Drainage Manual and Highway Drainage Guidelines CompletedUpdated versions of the AASHTO Highway Drainage Guidelines and the AASHTO Model Drainage Guidelines delivered to AASHTO
NCHRP 15-24Hydraulic Loss Coefficients for CulvertsCompletedNCHRP Report 734 Hydraulic Loss Coefficients for Culverts
NCHRP 15-25Alternatives to Design Speed for Selection of Roadway Design CriteriaCompleted
NCHRP 15-26Passing Sight Distance CriteriaFinal
NCHRP 15-27Safety Impacts of Design Element Trade-OffsCompletedThe final report is available as NCHRP Report 633.
NCHRP 15-28Modernize and Upgrade CANDE for Analysis and Design of Buried StructuresCompleted
NCHRP 15-29Recommended Design Specifications for Live Load Distribution to Buried StructuresFinal
NCHRP 15-30Median Intersection Design for Rural High-Speed Divided HighwaysFinal
NCHRP 15-31Design Guidance for Freeway Mainline Ramp TerminalsCompletedContinued as NCHRP 15-31A
NCHRP 15-31ADesign Guidance for Freeway Mainline Ramp TerminalsFinal
NCHRP 15-32Context Sensitive Solutions: Quantification of the Benefits in TransportationCompletedThe project final report is available as NCHRP Report 642: Quantifying the Benefits of Context Sensitive Solutions.
NCHRP 15-32AFacilitating Implementation of the Guidelines for Quantifying the Benefits of Content Sensitive SolutionsCompleted
NCHRP 15-33Guide for Transportation Landscape and Environmental DesignCompletedThe final report has been received and is being held for further revision.
NCHRP 15-34Performance-Based Analysis of Geometric Design of Highways and StreetsCompleted
NCHRP 15-34APerformance-Based Analysis of Geometric Design of Highways and StreetsFinal
NCHRP 15-35Geometric Design of DrivewaysCompletedNCHRP Report 659: Guide for the Geometric Design of Driveways and the Contractor's Final Report NCHRP Web-Only Document 151: Geometric Design of Driveways are available.
NCHRP 15-36Estimating Joint Probabilities of Design Coincident Flows at Stream ConfluencesFinalCompleted. Published as NCHRP Web Only Report 199
NCHRP 15-37Revising the AASHTO Guide for the Development of Bicycle FacilitiesCompletedThe final report has been distributed to AASHTO for ballot.
NCHRP 15-38Structural Design Requirements for Culvert JointsFinalThe contractor's final report available online as NCHRP Web-Only Document 190
NCHRP 15-39Superelevation Criteria for Sharp Horizontal Curves on Steep GradesFinalCompleted. Published as NCHRP Report 774.
NCHRP 15-40Design Guidance for High-Speed to Low-Speed Transition Zones for Rural HighwaysFinal
NCHRP 15-41Sag Vertical Curve Design Criteria for Headlight Sight DistanceFinal
NCHRP 15-42Recommended Bicycle Lane Widths for Various Roadway CharacteristicsCompleted
NCHRP 15-43Second Edition of the TRB Access Management ManualFinalCompleted. Published by TRB as the Second Edition of the TRB Access Management Manual
NCHRP 15-44Guidelines for the Use of Mobile LIDAR in Transportation ApplicationsCompletedThe guide is available as NCHRP Report 748.
NCHRP 15-45Completed
NCHRP 15-46Design-Management Guide for Design-Build and Construction Manager/General Contractor ProjectsFinal
NCHRP 15-47Developing an Improved Highway Geometric Design ProcessFinal
NCHRP 15-48Guidelines for Designing Low- and Intermediate-Speed Roadways that Serve All UsersFinal
NCHRP 15-49Guidelines for Implementing Managed Lanes Completed
NCHRP 15-50Guidelines for Integrating Safety and Cost-Effectiveness into Resurfacing, Restoration, and Rehabilitation ProjectsFinalPublished as NCHRP Report 876
NCHRP 15-50(01)Implementation Assessment of 3R Design GuidelinesFinalPublished as NCHRP Report 876
NCHRP 15-51Pre-construction Services Cost Estimating GuidebookFinal
NCHRP 15-52Developing a Context-Sensitive Functional Classification System for More Flexibility in Geometric DesignFinalPublished as NCHRP Report 855
NCHRP 15-53Roadside Barrier Designs Near Bridge Ends with Restricted Rights of WayFinal
NCHRP 15-54Proposed Modifications to AASHTO Culvert Load Rating SpecificationsFinalAvailable as NCHRP Web-only Document 268 in January 2020
NCHRP 15-55Guidance to Predict and Mitigate Dynamic Hydroplaning on RoadwaysFinal
NCHRP 15-56Guidelines for Selecting Ramp Design SpeedsFinalPublished as NCHRP Web-Only Document 313
NCHRP 15-57Highway Capacity Manual Methodologies for Corridors Involving Freeways and Surface StreetsFinal
NCHRP 15-58An Assessment of Safety and Geometric Design Criteria for Diverging Diamond InterchangesFinalPublished as NCHRP Report 959
NCHRP 15-59Horizontal Sightline Offset Design Criteria, Exceptions, and Mitigation StrategiesFinalPublished as NCHRP Research Report 910.
NCHRP 15-60Proposed Update of the AASHTO Guide for the Development of Bicycle FacilitiesCompletedIn AASHTO balloting process.
NCHRP 15-61Applying Climate Change Information to Hydrologic and Hydraulic Design of Transportation InfrastructureCompleted
NCHRP 15-61AHydrologic and Hydraulic Design Guide to Incorporate Climate Science in Transportation InfrastructureRFP
NCHRP 15-62Design and Access Management Guidelines for Truck RoutesFinalPublished as NCHRP Research Report 943.
NCHRP 15-63Guidance to Improve Pedestrian and Bicycle Safety at IntersectionsFinal
NCHRP 15-64Guidelines for the Design of Unsignalized Median Openings in Close Proximity to Signalized IntersectionsFinal
NCHRP 15-65Development of Safety Performance Based Guidelines for the Roadside Design GuideCompletedFinal
NCHRP 15-66Operational Performance and Safety Effects of Arterial Weaving SectionsActive
NCHRP 15-67Wind Drag Coefficients for Highway Signs and Support StructuresCompletedTo be published as NCHRP Report 1012
NCHRP 15-68Effective Low-Noise Rumble StripsActiveResearch in Progress.
NCHRP 15-69Utility Conflict Impacts During Highway ConstructionActiveResearch in progress.
NCHRP 15-70Valuation and Compensation for Accommodating Utility and Communications Installations in Public Rights of WayCompleted
NCHRP 15-71Contingency Factors to Account for Risk in Early Construction Cost Estimates for Transportation Infrastructure ProjectsFinal
NCHRP 15-72Identification of AASHTO Context ClassificationsFinal
NCHRP 15-73Design Options to Reduce Turning Motor Vehicle – Bicycle Conflicts at Controlled IntersectionsActiveResearch underway
NCHRP 15-74Safety Evaluation of On-Street Bicycle Facility Design FeaturesActive
NCHRP 15-75Update of the Policy on Geometric Design of Highways and Streets Guidance on Acceleration/Deceleration and Stopping Sight Distance CriteriaActive
NCHRP 15-76Designing for Target SpeedActiveResearch in progress.
NCHRP 15-77Aligning Geometric Design with Roadway ContextFinal
NCHRP 15-78Guidebook for Urban and Suburban Roadway Cross-Sectional ReallocationCompleted
NCHRP 15-79Development of Guidance for Non-Standard Roadside Hardware InstallationsPending
NCHRP 15-80Design Guide and Standards for Infrastructure ResilienceActiveResearch in progress.
NCHRP 15-81Guideline for Depicting Existing and Proposed Utility Facilities in Design PlansActive
NCHRP 15-82Relationship of Speed, Roadway Geometrics, and Crashes on High-Speed Rural HighwaysPending
NCHRP 16-04Design Guidelines for Safe and Aesthetic Roadside Treatments in Urban AreasCompleted
NCHRP 16-05Guidelines for Cost-Effective Safety Treatments of Roadside Ditches Final
NCHRP 17-06AService Vehicle Lighting and Traffic Control Systems for Short-Term and Moving Work Zones (Phase II)Completed
NCHRP 17-07Guidelines for Converting STOP to YIELD Control at IntersectionsFinal
NCHRP 17-08Traffic Barrier and Control Treatments for Restricted Work ZonesCompleted
NCHRP 17-09Effect of Highway Standards on SafetyCompleted
NCHRP 17-09(2)Impacts of Resurfacing Projects With and Without Additional Safety ImprovementsCompleted
NCHRP 17-10Structural Supports for Highway Signs, Luminaires, and Traffic SignalsCompleted
NCHRP 17-10(2)Structural Supports for Highway Signs, Luminaires, and Traffic SignalsCompleted
NCHRP 17-100Leveraging Artificial Intelligence and Big Data to Enhance Safety AnalysisActive
NCHRP 17-101Applying the Safe System Approach to Transportation Planning, Design, and Operations in the United StatesActive
NCHRP 17-102Safety Performance for Active Transportation Modes Using Exposure ModelsPending
NCHRP 17-103A Guide and Toolkit for Strategic Decision-Making to Improve Traffic SafetyRFP
NCHRP 17-104Enhancement of Roadside Design Safety Prediction Models for the Highway Safety ManualActiveResearch in progress
NCHRP 17-105MASH Crashworthiness of Luminaire PolesFinalThis project is combined with NCHRP Project 22-43
NCHRP 17-106Motorist Behavior and Safety Impacts on Bicyclists from Centerline and Shoulder Rumble Strips on High-Speed Two-Lane HighwaysPending
NCHRP 17-107Guide for Work Zone Intrusion Prediction and PreventionRFP
NCHRP 17-108Developing Crash Modification Factors for Alternative IntersectionsActive
NCHRP 17-109Crash Modification Factors for Automated Traffic Signal Performance MeasuresPending
NCHRP 17-11Determination of Safe/Cost Effective Roadside Slopes and Associated Clear DistancesCompleted
NCHRP 17-11(02)Development of Clear Recovery Area GuidelinesCompleted
NCHRP 17-11(03)Development of Clear Recovery Area GuidelinesActive
NCHRP 17-110Vehicle-Based Telemetric Data for State and Local Transportation AgenciesRFP
NCHRP 17-111Speed Management Strategies to Improve Pedestrian and Bicyclist Safety on Arterials and Higher-Speed RoadwaysPending
NCHRP 17-112Enhancing Crash Modification Factors and Safety Performance Functions for Pedestrian and Bicyclist Countermeasures Pending
NCHRP 17-113Incorporating Safe System Approach into the NCHRP Report 500 SeriesPending
NCHRP 17-114Integrated Strategies for Managing Excessive Travel Speed to Improve Safety PerformanceRFP
NCHRP 17-115Guide for Marked Crosswalk Design, Spacing, Placement, and Safety Pending
NCHRP 17-116Practical Approaches to Quantifying Safe System ConceptsRFP
NCHRP 17-117Advancing Safety Prediction Methodologies for Horizontal CurvesRFP
NCHRP 17-118Understanding the Impacts of Operational Changes on Safety PerformancePending
NCHRP 17-119Conflict-Based Crash Prediction Method for IntersectionsRFP
NCHRP 17-12Improved Safety Information to Support Highway DesignCompleted
NCHRP 17-120A Method to Link Crash, Emergency Medical Service, and Trauma Registry DataPending
NCHRP 17-121Using Advanced Technologies to Reduce Commercial Motor Vehicle Crashes in Work ZonesRFP
NCHRP 17-122Evaluation of Trespassing Detection and Warning Systems in the Vicinity of Highway-Rail Grade CrossingsAnticipated
NCHRP 17-13Strategic Plan for Improving Roadside SafetyCompleted
NCHRP 17-14Improved Guidelines for Median SafetyFinal
NCHRP 17-15Accident Mitigation on Congested Rural and Exurban Two- and Three-Lane HighwaysFinal
NCHRP 17-16Accident Warrant for Traffic SignalsFinal
NCHRP 17-17Development of Guidelines for Nighttime Road Work to Improve Safety and OperationsCompleted
NCHRP 17-17(2)Development of Guidelines for Nighttime Road Work to Improve Safety and OperationsCompleted
NCHRP 17-18AASHTO Strategic Highway Safety Plan Implementation SupportCompleted
NCHRP 17-18(02)Web Site DevelopmentCompleted
NCHRP 17-18(03)Guidance for Implementation of the AASHTO Strategic Highway Safety PlanCompleted
NCHRP 17-18(04)Highway Safety ManualCompleted
NCHRP 17-18(05)Integrated Management Process to Reduce Highway Injuries and Fatalities StatewideCompleted
NCHRP 17-18(05)BIntegrated Safety Management Process - Technical SupportCompleted
NCHRP 17-18(07)AASHTO Strategic Highway Safety Plan--Technology Transfer PlanCompleted
NCHRP 17-18(08)Comprehensive Human Factors Guidelines for Road SystemsCompleted
NCHRP 17-18(09)ACoordination of Safety ResearchCompleted
NCHRP 17-18(10)Safe Landscape Awareness CourseCompleted
NCHRP 17-18(11)Implementation Plan and ProductsCompleted
NCHRP 17-18(14)Lane Departure VideoCompleted
NCHRP 17-18(15)Local Highway Agency Safety GuidesCompleted
NCHRP 17-18(19)White Paper on Alternate Strategies for Safety Improvement InvestmentsCompleted
NCHRP 17-20Technical Support for the AASHTO Task Force on Roadside Safety (TFRS)Completed
NCHRP 17-21Safety of U-Turns at Unsignalized Median OpeningsCompleted
NCHRP 17-22Identification of Vehicular Impact Conditions Associated with Serious Ran-Off-Road CrashesCompleted
NCHRP 17-23Safety Impacts and Other Implications of Raised Speed Limits on High-Speed RoadsCompleted
NCHRP 17-24Use of Event Data Recorder (EDR) Technology for Roadside Crash Data AnalysisCompleted
NCHRP 17-25Crash Reduction Factors for Traffic Engineering and ITS ImprovementsCompleted
NCHRP 17-26Methodology to Predict the Safety Performance of Urban and Suburban ArterialsCompleted
NCHRP 17-27Parts I and II of the Highway Safety ManualCompleted
NCHRP 17-28Pavement Marking Materials and Markers: Safety Impact and Cost-EffectivenessCompleted
NCHRP 17-29Methodology to Predict the Safety Performance of Rural Multilane HighwaysCompleted
NCHRP 17-30Traffic Safety Evaluation of Nighttime and Daytime Work ZonesCompleted
NCHRP 17-31Human Factors Guidelines for Road Systems--Phase 2Completed
NCHRP 17-32Guidance for the Design and Application of Shoulder and Centerline Rumble StripsCompleted
NCHRP 17-33Effectiveness of Behavioral Highway Safety CountermeasuresCompleted
NCHRP 17-34Prepare Parts IV and V of the Highway Safety ManualCompleted
NCHRP 17-35Evaluation of Safety Strategies at Signalized IntersectionsCompleted
NCHRP 17-36Production of the First Edition of the Highway Safety ManualCompleted
NCHRP 17-37Pedestrian Predictive Crash Methodology for Urban and Suburban ArterialsCompleted
NCHRP 17-38Highway Safety Manual Implementation and Training MaterialsCompleted
NCHRP 17-40Model Curriculum for Highway Safety Core CompetenciesCompleted
NCHRP 17-41Human Factors Guidelines for Road Systems - Phase IIICompleted
NCHRP 17-42Development of Information and Data to Support Improved Safety Management and Communication of Safety NeedsCompleted
NCHRP 17-43Long-Term Roadside Crash Data Collection ProgramCompleted
NCHRP 17-44Factors Contributing to Median Encroachments and Cross-Median CrashesFinal
NCHRP 17-45Enhanced Safety Prediction Methodology and Analysis Tool for Freeways and InterchangesFinal
NCHRP 17-46Comprehensive Analysis Framework for Safety Investment DecisionsFinal
NCHRP 17-47Human Factors Guidelines for Road SystemsFinal
NCHRP 17-48Highway Infrastructure and Operations Safety Research NeedsCompletedPublished as NCHRP Report 756.
NCHRP 17-49Guide for Effective Tribal Crash Reporting CompletedFinal report published as NCHRP Report 788.
NCHRP 17-50Lead States Initiative for Implementing the Highway Safety ManualFinal
NCHRP 17-51(03)Communication Plan for the National Highway Safety StrategyCompleted
NCHRP 17-51(04)Development of a National Strategy on Highway Safety — TZD FrameworkCompleted
NCHRP 17-52Using Peer Exchanges to Improve the Effectiveness of a State's Strategic Highway Safety PlanFinal
NCHRP 17-53Evaluation of the 13 Controlling Criteria for Geometric DesignFinal
NCHRP 17-54Consideration of Roadside Features in the Highway Safety ManualFinal
NCHRP 17-55Guidelines for Slope TraversabilityFinalPublished as NCHRP Research Report 911
NCHRP 17-56Development of Crash Modification Factors for Uncontrolled Pedestrian Crossing TreatmentsActive
NCHRP 17-57Development of a Comprehensive Approach for Serious Traffic Crash Injury Measurement and Reporting SystemsFinal
NCHRP 17-58Safety Prediction Models for Six-Lane and One-Way Urban and Suburban ArterialsFinal
NCHRP 17-59Safety Impacts of Intersection Sight DistanceCompleted
NCHRP 17-60Benefit-Cost Methodology for Behavioral Highway Safety CountermeasuresActive
NCHRP 17-61Work Zone Crash Characteristics and Countermeasure GuidanceFinal
NCHRP 17-62Improved Prediction Models for Crash Types and Crash SeveritiesFinal
NCHRP 17-63Guidance for the Development and Application of Crash Modification FactorsFinal
NCHRP 17-64Guidance for the Implementation of the Toward Zero Deaths National Strategy on Highway SafetyFinal
NCHRP 17-65Improved Analysis of Two-Lane Highway Capacity and Operational Performance Final
NCHRP 17-66Guidance for Selection of Appropriate Countermeasures for Opposite Direction CrashesFinal
NCHRP 17-67Identification of Factors Contributing to the Decline of Traffic Fatalities in the United StatesActive
NCHRP 17-68Intersection Crash Prediction Methods for the Highway Safety ManualFinal
NCHRP 17-69A Strategic Approach to Transforming Traffic Safety Culture to Reduce Deaths and InjuriesFinalThe contractor's report is available as NCHRP Web-Only Document 252
NCHRP 17-70Development of Roundabout Crash Prediction Models and MethodsFinal
NCHRP 17-71Proposed AASHTO Highway Safety Manual, Second EditionFinalBeing completed by NCHRP Project 17-71A
NCHRP 17-71AProposed AASHTO Highway Safety Manual, Second EditionActiveResearch underway
NCHRP 17-72Update of Crash Modification Factors for the Highway Safety ManualCompleted
NCHRP 17-73Systemic Pedestrian Safety AnalysisFinal
NCHRP 17-74Application of Crash Modification Factors for Access ManagementFinalFinal report has been published as NCHRP Research Report 974 Volumes 1 and 2
NCHRP 17-75Leveraging Big Data to Improve Traffic Incident ManagementFinalPublished as NCHRP Research Report 904.
NCHRP 17-76Guidance for the Setting of Speed LimitsFinal
NCHRP 17-77Guide for Quantitative Approaches to Systemic Safety AnalysisFinal
NCHRP 17-78Understanding and Communicating Reliability of Crash Prediction ModelsFinal
NCHRP 17-79Safety Effects of Raising Speed Limits to 75 mph and HigherFinal
NCHRP 17-80Expansion of Human Factors Guidelines for Road Systems, Second EditionCompleted
NCHRP 17-81Proposed Macro-Level Safety Planning Analysis Chapter for the Highway Safety ManualCompleted
NCHRP 17-82Proposed Guidance for Fixed Objects in the Roadside Design GuideFinal
NCHRP 17-83Briefings and Training Materials for Implementation of the Highway Safety Manual, Second EditionActiveProject on-hold due to the development of HSM 2 stage
NCHRP 17-84Pedestrian and Bicycle Safety Performance Functions for the Highway Safety ManualCompletedResearch is complete. Final report under review.
NCHRP 17-85Development and Application of Crash Severity Models for the Highway Safety ManualCompleted
NCHRP 17-86Estimating Effectiveness of Safety Treatments in the Absence of Crash DataActive
NCHRP 17-87Enhancing Pedestrian Volume Estimation and Developing HCM Pedestrian Methodologies for Safe and Sustainable CommunitiesFinalPublished as NCHRP WOD 312 and NCHRP Research Report 992
NCHRP 17-88Roadside Encroachment Database Development and AnalysisActive
NCHRP 17-89Safety Performance of Part-Time Shoulder Use on FreewaysCompleted
NCHRP 17-89AHOV/HOT Freeway Crash Prediction Method for the Highway Safety ManualCompletedPublication decision pending.
NCHRP 17-90Evaluation of Roadside Crash Injury Metrics in MASHCompletedPublication Pending
NCHRP 17-91Assessing the Impacts of Automated Driving Systems (ADS) on the Future of Transportation SafetyFinalPublished as NCHRP Research Report 1001/BTSCRP Research Report 2
NCHRP 17-92Developing Safety Performance Functions for Rural Two-Lane Highways that Incorporate Speed MeasuresActive
NCHRP 17-93Updating Safety Performance Functions for Data-Driven Safety AnalysisActiveResearch In Progress
NCHRP 17-95Crash Modification Factors (CMFs) for Intelligent Transportation System (ITS) ApplicationsActive
NCHRP 17-96Traffic Safety Culture Research RoadmapActive
NCHRP 17-97Strategies to Improve Pedestrian Safety at NightActive
NCHRP 17-98Guide for Intersection Control EvaluationActive
NCHRP 17-99Assessing Safety Effectiveness of Treatments and Technologies at Highway-Rail Grade CrossingsActive
NCHRP 18-03Silica Fume Concrete for Bridge DecksCompleted
NCHRP 18-04ADurability of "Early-Opening-to-Traffic" Portland Cement Concrete for Pavement Rehabilitation: Background and Plan for EvaluationCompleted
NCHRP 18-04BDurability of "Early-Opening-to-Traffic" Portland Cement Concrete for Pavement RehabilitationCompleted
NCHRP 18-05Relationship of Portland Cement Characteristics to Concrete DurabilityCompleted
NCHRP 18-06Service Life of Corrosion-Damaged Reinforced Concrete Bridge Superstructure ElementsCompleted
NCHRP 18-06AService Life of Corrosion-Damaged Reinforced Concrete Bridge Superstructure ElementsCompleted
NCHRP 18-07Prestress Losses in Pretensioned High-Strength Concrete Bridge GirdersCompleted
NCHRP 18-08Supplementary Cementitious Materials to Enhance Durability of Concrete Bridge DecksCompleted
NCHRP 18-08ASupplementary Cementitious Materials to Enhance Durability of Concrete Bridge DecksCompleted
NCHRP 18-09AGuidelines for Reducing Premature Deterioration of Hydraulic Cement Concrete Pavements: Background and Research PlanCompleted
NCHRP 18-10Procedures for Evaluating Air-Entraining Admixtures for Highway ConcreteCompleted
NCHRP 18-11Improved Specifications and Protocols for Acceptance Tests on Processing Additions in Cement ManufacturingCompleted
NCHRP 18-12Self-Consolidating Concrete for Precast, Prestressed Concrete Bridge ElementsCompleted
NCHRP 18-13Specifications and Protocols for Acceptance Tests of Fly Ash Used in Highway ConcreteCompleted
NCHRP 18-14Evaluation and Repair Procedures for Precast/Prestressed Concrete Girders with Longitudinal Cracking in the WebFinal
NCHRP 18-15High-Performance/High-Strength Lightweight Concrete for Bridge Girders and DecksCompleted
NCHRP 18-16Self-Consolidating Concrete for Cast-in-Place Bridge ComponentsCompleted
NCHRP 18-17Entrained Air Void System for Durable Highway ConcreteFinal
NCHRP 18-18Design and Construction of Deck Bulb Tee Girder Bridges with UHPC ConnectionsFinalPublished as NCHRP Research Report 999
NCHRP 18-19Rating Concrete Water Permeability Based on Resistivity MeasurementsActive
NCHRP 18-20AASHTO LRFD Design, Installation, and Standard Practice of Testing for Cured In-Place Pipe LinersActiveThe research team is proceeding with the testing program as outlined in Task 10, Phase III. The quarterly report for the period ending December 31, 2022 indicates 3-4 month delay.
NCHRP 19-04A Review of DOT Compliance with GASB 34 RequirementsCompleted
NCHRP 19-05Assessing and Mitigating Future Impacts to the Federal Highway Trust Fund such as Alternative Fuel ConsumptionFinal
NCHRP 19-06Identifying and Quantifying Rates of State Motor Fuel Tax EvasionCompleted
NCHRP 19-07GASB 34--Methods for Condition Assessment and PreservationFinal
NCHRP 19-08Costs of Alternative Revenue-Generation SystemsCompleted
NCHRP 19-10AASHTO Partnering Handbook, Second EditionCompletedDraft final report received August 7, 2017.
NCHRP 19-11Applying Risk Analysis, Value Engineering, and other Innovative Solutions for Project DeliveryCompleted
NCHRP 19-12Guide for Financial Planning and Management in Support of Transportation Asset ManagementFinal
NCHRP 19-13Guidance for Use of Land Value Return and Recycling to Fund TransportationFinal
NCHRP 19-14Right-Sizing Transportation Investments--Methods for Planning and ProgrammingCompleted
NCHRP 19-15Guidebook for Effective Policies and Practices for Managing Surface Transportation DebtFinal
NCHRP 19-16Federal Funding Uncertainty in State, Local, and Regional Departments of Transportation: Impacts, Responses, and Adaptation Final
NCHRP 19-17Federal Funding Flexibility: Use of Federal Aid Highway Fund Transfers by State DOTsFinal
NCHRP 19-18Transitioning Fuel Tax Assessments to a Road Usage ChargeActive
NCHRP 19-19Sustaining Zero-Fare Public Transit in a Post COVID-19 World: A Guide for State DOTsActive
NCHRP 19-20Interdependence of Federal, State, and Local Transportation Funding and OwnershipActive
NCHRP 19-21Selecting Revenue Models for Electric Vehicle ChargingPending
NCHRP 19-22Equity Impacts of Transportation Revenue Mechanisms and Changing TrendsRFP
NCHRP 19-23Revenue-Related Strategies for New Mobility OptionsPending
NCHRP 20-05Synthesis of Information Related to Highway PracticesActive
NCHRP 20-06Legal Problems Arising out of Highway ProgramsActiveHyperlinks to each LRD published since 1999 appear below (Topic 10-03 forward).
NCHRP 20-06/Topic 17-01Update of Selected Studies in Transportation, Volume One: Transportation Contract LawCompleted
NCHRP 20-06/Topic 17-02Tort Liability Defense Practices for Design FlexibilityFinal
NCHRP 20-06/Topic 17-03First RespondersCompleted
NCHRP 20-06/Topic 17-04Legal Aspects of Performance-Based Specifications for Highway Construction and Maintenance ContractsFinal
NCHRP 20-06/Topic 17-05The Ramifications of Post-Kelo Legislation on State TransportationFinal
NCHRP 20-06/Topic 18-01Legal Aspects of Conservation Easements—A Primer for Transportation AgenciesFinal
NCHRP 20-06/Topic 18-02Enforceability of Local Hire Preference ProgramsFinal
NCHRP 20-06/Topic 18-03Legal Issues Surrounding the Use of Digital Intellectual Property on Design and Construction ProjectsFinal
NCHRP 20-06/Topic 19-01Eminent Domain and Fair Market Value in a Depressed Real Estate MarketFinal
NCHRP 20-06/Topic 19-02Legal Aspect of Environmental Permitting in the Emergency Response EnvironmentCompleted
NCHRP 20-06/Topic 19-03Effect of MUTCD on Tort Liability of Government Transportation AgenciesFinal
NCHRP 20-06/Topic 19-04Use of Social Media in Transportation AgenciesCompleted
NCHRP 20-06/Topic 20-02Liability of Design Builders for Design, Construction and Acquisition ClaimsFinalCompleted and published as NCHRP LRD 68
NCHRP 20-06/Topic 20-03Permissible Arranges in Scope of Work for Construction ContractsFinalCompleted. Published as NCHRP LRD 67
NCHRP 20-06/Topic 20-04Due Diligence for Insurance Coverage in Transportation Construction ContractsFinalCompleted and Published as NCHRP LRD 66
NCHRP 20-06/Topic 21-01A Look at the Legal Environment for Driverless VehiclesFinalCompleted. Published as NCHRP LRD 69.
NCHRP 20-06/Topic 21-02Claims Related to Stormwater DischargesFinal
NCHRP 20-06/Topic 21-03Takings and MitigationFinalCompleted. Published as NCHRP Legal Research Digest 70
NCHRP 20-06/Topic 21-04Liability of Transportation Entity for the Unintentional Release of Secure Data or the Intentional Release of Monitoring Data on Movements or Activities of the PublicCompletedCompleted; Published as NCHRP Legal Research Digest 71
NCHRP 20-06/Topic 22-01Legal Requirements for State DOT Participation in Conservation PlansCompleted
NCHRP 20-06/Topic 22-02Liability of State Departments of Transportation for Design ErrorsCompleted
NCHRP 20-06/Topic 22-03Primer on Patentability and Use of Ideas Developed by Contractors Performing Work for State and Federal Transportation and Local Planning AgenciesCompletedCompleted- published as Legal Research Digest 73
NCHRP 20-06/Topic 22-04Summary of Federal Law Restricting Use of Highway Safety Data in Tort LitigationCompletedCompleted.
NCHRP 20-06/Topic 23-01Condemnation Hierarchy-Competing Public Uses FinalCompleted-Published as Legal Research Digest 78
NCHRP 20-06/Topic 23-04The Effectiveness of State False Claims Acts in Protecting State Transportation FundingCompletedComplete - published as LRD 79
NCHRP 20-06/Topic 23-05Update of Selected Studies in Transportation Law: Volume Eight, Section 3: Indian Transportation LawFinalCompleted; Published as NCHRP 76
NCHRP 20-06/Topic 23-06Update of Selected Studies in Transportation Law: Volume Eight, Section 1: Transportation Agencies and Civil RightsFinalCompleted. Published as NCHRP Report
NCHRP 20-06/Topic 24-01Buy America Requirements For Federal Highway ProjectsCompletedCompleted. Published as NCHRP LRD 80.
NCHRP 20-06/Topic 24-02Potential Liability Associated with Unstable Slope Management ProgramsCompletedCompleted. Published as NCHRP LRD 82.
NCHRP 20-06/Topic 24-03Guidelines for Drafting Liability Neutral Transportation Engineering DocumentsFinalCompleted. Published as NCHRP LRD 83
NCHRP 20-06/Topic 24-04The Legal Issues Concerning the Use of Transportation Facilities to Generate Revenue for State DOTsFinalCompleted. Published as NCHRP LRD 81.
NCHRP 20-06/Topic 24-05Fix It, Sign It, or Close It: State of Good Repair in an Era of Budget ConstraintsCompletedCompleted. Published as TCRP LRD 57 and NCHRP LRD 84.
NCHRP 20-06/Topic 25-01Public Liabilities Relating to Driveway PermitsCompletedResearch complete. Published as NCHRP LRD 85.
NCHRP 20-06/Topic 25-03Managing Enhanced Risk in the Mega Project EraCompletedCompleted - Published as NCHRP LRD 86.
NCHRP 20-06/Topic 25-04Laws Governing Homeless Encampments in Transportation Rights-of-WayCompletedCompleted - Published as NCHRP LRD 87.
NCHRP 20-06/Topic 25-05The Legal Issues Associated with Consequential Damages Provisions in Construction ContractsCompletedCompleted. Publication Pending
NCHRP 20-06/Topic 25-06Legal Issues and Strategies for Best-Value Procurement for Highway ConstructionCompletedCompleted. Publication Pending.
NCHRP 20-06/Topic 25-07Review of Statutory and Case Law on Planning and Environmental LinkagesCompletedCompleted. Publication Pending.
NCHRP 20-06/Topic 26-01Effects of Indian Treaties on Development and Operation of Transportation FacilitiesActiveResearch in Progress
NCHRP 20-06/Topic 26-02Analysis of Arbitration and Holdings in Construction DisputesActiveResearch in Progress
NCHRP 20-06/Topic 26-03Multistate Coordination and Harmonization for AV LegislationActiveResearch in Progress
NCHRP 20-06/Topic 26-04Pandemics and Contractual IssuesActiveResearch in Progress
NCHRP 20-07Research for AASHTO Standing Committee on HighwaysFinal
NCHRP 20-07/Task 001The Development of a Cost-Effectiveness Approach to the Programming of Roadside Safety ImprovementsCompletedCompleted---Published as NCHRP Report 148
NCHRP 20-07/Task 002The Relation of Side-Slope Design to Highway SafetyCompletedCompleted---Published as NCHRP Report 158
NCHRP 20-07/Task 003The Development of an Effective Earth-Berm Vehicle DeflectorCompletedCompleted---Summarized in NCHRP Research Results Digest 77
NCHRP 20-07/Task 004Lateral Acceleration and Lateral Tire-Pavement Forces in a Vehicle Traversing Curves Relating to Available Pavement Skid-Resistant MeasuresCompletedCompleted---Summarized in NCHRP Research Results Digest 55
NCHRP 20-07/Task 005Effect of Curb Geometry and LocationCompletedCompleted---Published as NCHRP Report 150
NCHRP 20-07/Task 006Development of Impact Attenuators Utilizing Waste MaterialsCompletedCompleted---Published as NCHRP Report 157
NCHRP 20-07/Task 007Safety at Narrow Bridge SitesCompletedCompleted---Published as NCHRP Report 203
NCHRP 20-07/Task 008Energy and Transportation SystemsCompleted
NCHRP 20-07/Task 009Review of Highway Management Studies Co-Sponsored by AASHTO and HUFSAMCompleted
NCHRP 20-07/Task 010Review of Vehicle Weight/Horsepower Ratio as Related to Passing-Lane Design CriteriaCompleted
NCHRP 20-07/Task 011Longitudinal Occupancy of Freeways by UtilitiesCompleted
NCHRP 20-07/Task 012Guidelines for Citizen Participation in Transportation PlanningCompleted
NCHRP 20-07/Task 013Guidelines for Safety Criteria for Low-Volume RoadsCompletedCompleted---Published as NCHRP Report 214
NCHRP 20-07/Task 014A Policy on Geometric Design of Highways and StreetsCompleted
NCHRP 20-07/Task 015Development of a Simplified Pavement Management SystemCompletedCompleted---Published as NCHRP Report 215
NCHRP 20-07/Task 016Regulation of Movement of Hazardous CargoesCompleted
NCHRP 20-07/Task 017Evaluation of AASHO Road Test Satellite and Environmental StudiesCompleted
NCHRP 20-07/Task 018Standard Specifications for Highway BridgesCompleted
NCHRP 20-07/Task 019The Engineering Aspects of Highway Traffic Safety in an Age of Limited ResourcesCompleted
NCHRP 20-07/Task 020Vehicle Acceleration and Deceleration CharacteristicsCompleted
NCHRP 20-07/Task 021Need for Pavement Markings on Low-Volume RoadsCompleted
NCHRP 20-07/Task 022Encasement of Pipelines Through Highway and Railroad RoadbedsCompleted
NCHRP 20-07/Task 023Contracting Practices and Payment ProceduresCompleted
NCHRP 20-07/Task 024AASHTO Pavement Design GuideCompleted
NCHRP 20-07/Task 025STRS Support TaskCompleted
NCHRP 20-07/Task 026Research and Development Needs in Construction Engineering ManagementCompleted
NCHRP 20-07/Task 027Relationships Between Vehicle Configurations and Highway DesignCompleted
NCHRP 20-07/Task 028AASHTO Guide for Design of Pavement Structures - Training ProgramCompleted
NCHRP 20-07/Task 029Pavement Roughness and Rideability - Field EvaluationCompleted
NCHRP 20-07/Task 030Manual on Subsurface InvestigationsCompleted
NCHRP 20-07/Task 031Development of Comprehensive Bridge Specifications and CommentaryCompleted
NCHRP 20-07/Task 032Design and Construction Specifications for Segmental Concrete BridgesCompleted
NCHRP 20-07/Task 033AASHTO Evaluation of FHWA Research ProgramCompleted
NCHRP 20-07/Task 034AASHTO/AWS Bridge Welding Code Commentary and Draft Fracture Control PlanCompleted
NCHRP 20-07/Task 035Review of Traffic Signal Intensity StandardsCompleted
NCHRP 20-07/Task 036Assessment of Research on High Pressure Truck Tires - Pavement Performance InteractionCompleted
NCHRP 20-07/Task 037Development of an Asphalt Paving HandbookCompleted
NCHRP 20-07/Task 038AASHTO Guidelines for Pavement Management SystemsCompleted
NCHRP 20-07/Task 039Revision of AASHTO Pavement Overlay Design ProceduresCompleted
NCHRP 20-07/Task 040AASHTO Contribution to Support of the Highway Research Coordinating CouncilCompleted
NCHRP 20-07/Task 041AASHTO Guide for Recruitment and Retention of Transportation ProfessionalsCompleted
NCHRP 20-07/Task 042Truck Size and Weight Research and PolicyCompleted
NCHRP 20-07/Task 043Revision of the AASHTO Policy on Geometric Design of Highways and StreetsCompletedTask cancelled
NCHRP 20-07/Task 044Division 100 Revision of the AASHTO Guide Specifications for Highway ConstructionCompleted
NCHRP 20-07/Task 045Revision to the AASHTO Completed
NCHRP 20-07/Task 046AASHTO Guidelines for Bridge Management SystemsCompletedCompleted---Summarized in NCHRP Research Results Digest 186
NCHRP 20-07/Task 047Support for the Joint Committee on Truck Size and WeightCompleted
NCHRP 20-07/Task 048Development of a System for the Uniform Location of Subject Matter Within Standard SpecificationsCompleted
NCHRP 20-07/Task 049Follow-up on USA Asphalt Study Tour of EuropeCompleted
NCHRP 20-07/Task 050White Paper on the Feasibility of Longer Combination Vehicles (LCV)Completed
NCHRP 20-07/Task 051Synthesis of the Impacts of Truck Size and Weight on the Transportation System and the EconomyCompleted
NCHRP 20-07/Task 052Support for the Joint Committee on Domestic Freight PolicyCompleted
NCHRP 20-07/Task 053Profilograph Limitations, Correlation, and Calibration for Effective Performance Based SpecificationsCompleted
NCHRP 20-07/Task 054Impacts of Conversion to the Metric SystemCompleted
NCHRP 20-07/Task 055Support for National Quality InitiativesCompleted
NCHRP 20-07/Task 056Review of AASHTO Completed
NCHRP 20-07/Task 057Joint Task Force on Pavements' Workshop on SHRP LTPP Data and AnalysisCompleted
NCHRP 20-07/Task 058Information and Evaluation of Asphalt Rubber ResearchCompleted
NCHRP 20-07/Task 059Transportation Investment and Economic Expansion: Case StudiesCompleted
NCHRP 20-07/Task 060Support for Implementing the Clean Air Act Amendments of 1990Completed
NCHRP 20-07/Task 061Assessment of AASHTO Needs for Metric Conversions & Design of Metrication ClearinghouseCompleted
NCHRP 20-07/Task 062Rewrite of AASHTO Construction Guide Specifications into Imperative Mood and MetricCompleted
NCHRP 20-07/Task 063Development of a Manual for State Transportation ResearchCompleted
NCHRP 20-07/Task 064Review and Update of the AASHTO Guide for Bridge Maintenance Management, the AASHTO Manual for Bridge Maintenance, and the AASHTO Maintenance ManualCompletedCompleted
NCHRP 20-07/Task 065Recommended Practices for Sampling, Handling, and Testing of Pavement SamplesCompleted
NCHRP 20-07/Task 066Development and Training of Pavement Engineering PersonnelCompletedCompleted
NCHRP 20-07/Task 067AASHTO Publications in CD-ROM FormatCompletedCompleted
NCHRP 20-07/Task 068Polyethylene Pipe SpecificationsCompleted
NCHRP 20-07/Task 069Recommended Revisions to Construction Specifications for Highway BridgesCompletedCompleted
NCHRP 20-07/Task 070Developing Commentary for the ANSI / AASHTO / AWS D1.5-95 Bridge Welding Code Including the Fracture Control PlanCompletedCompleted
NCHRP 20-07/Task 071Co-Sponsorship of Winter Maintenance ProgramCompletedCompleted
NCHRP 20-07/Task 072Materials Characterization for Input to AASHTO Guide for Design of Pavement StructuresCompleted
NCHRP 20-07/Task 073High Strength Metric Fasteners for Bridge ApplicationsCompletedTask cancelled
NCHRP 20-07/Task 074Manual for Scientific Inquiry into Transportation Problems: Research MethodologiesCompleted
NCHRP 20-07/Task 075Geometric and Roadside Safety for Very Low Volume RoadsCompletedCompleted
NCHRP 20-07/Task 076Installation of Fiber Optic Facilities on Highway and Freeway Rights of WayCompleted
NCHRP 20-07/Task 077Improved Pavement Design WorkshopCompleted
NCHRP 20-07/Task 078Developing a Measurement System for the AASHTO/TRAC ProgramCompletedCompleted
NCHRP 20-07/Task 079Incorporating Canadian Projects into TRISCompletedCompleted
NCHRP 20-07/Task 080Information Clearinghouse for Continuous Quality ImprovementCompletedCompleted
NCHRP 20-07/Task 081Effect of Headlamp Design on Retroreflective Signs and Pedestrian SafetyCompletedCompleted
NCHRP 20-07/Task 082Enhancement to the Special Products Evaluation ListCompleted
NCHRP 20-07/Task 083Guide for Snow and Ice ControlCompletedCompleted
NCHRP 20-07/Task 084Developing a Model for Effective Transfer of Innovative TechnologiesCompleted
NCHRP 20-07/Task 085Report on Forum on Economic Returns of Transportation InvestmentsCompleted
NCHRP 20-07/Task 086Potential Credit Reform: Accessing Unobligated Highway Trust Fund BalancesCompletedCompleted
NCHRP 20-07/Task 087Investigate the Need for Research on the Performance of Portland Cement ConcreteCompletedCompleted
NCHRP 20-07/Task 088LRFD Specifications for Retaining WallsCompletedCompleted
NCHRP 20-07/Task 089LRFD Specifications for Plastic Pipe and CulvertsCompletedCompleted---Published as NCHRP Report 438
NCHRP 20-07/Task 090The Next Generation of TRAC PAC - A Hands-On Educational ProgramCompletedCompleted
NCHRP 20-07/Task 091Transportation Implications of Proposed Changes to the National Ambient Air Quality StandardsFinalCompleted
NCHRP 20-07/Task 092Durability of Precast Segmental BridgesCompleted
NCHRP 20-07/Task 093AASHTO Subcommittee Process EvaluationCompleted
NCHRP 20-07/Task 094Mitigating Nighttime Construction Noise, Vibrations, and Other NuisancesCompleted
NCHRP 20-07/Task 095Support for the AASHTO 350 Task ForceCompleted
NCHRP 20-07/Task 096Techniques for Acquiring ITS SoftwareCompletedCompleted
NCHRP 20-07/Task 097Bridge Performance MeasuresCompletedCompleted
NCHRP 20-07/Task 098Shear Design Methodology for Prestressed ConcreteCompleted
NCHRP 20-07/Task 099LRFD Design Criteria for Cotton Duck Pad (CDP) Bridge BearingsCompletedCompleted
NCHRP 20-07/Task 100Safety Appraisal of Suspension Bridge Main CablesCompletedCompleted
NCHRP 20-07/Task 101Lead States Web SiteCompleted
NCHRP 20-07/Task 102Project-Development Policies and PracticesCompletedCompleted
NCHRP 20-07/Task 103Development of AASHTO Committee Web SitesCompletedCompleted
NCHRP 20-07/Task 104Support for the Year 2000 National Conference on PavementsCompletedCompleted
NCHRP 20-07/Task 105Planning, Design, and Operation of Pedestrian FacilitiesCompletedCompleted
NCHRP 20-07/Task 106Thermal Movement Design Procedure for ConcreteCompletedCompleted
NCHRP 20-07/Task 107Shear Design Guidelines for Skewed Multi-Beam BridgesCompletedCompleted
NCHRP 20-07/Task 108Geometric Design Policy for Very Low-Volume Local Roads (<400 ADT)CompletedCompleted
NCHRP 20-07/Task 108AGeometric Design Policy for Very Low-Volume Local Roads (<400 ADT)FinalCompleted
NCHRP 20-07/Task 109Improved Contracting Methods for Highway Construction ProjectsCompletedCompleted
NCHRP 20-07/Task 110Support AASHTO Participation in Forum on Transportation Investments and Economic GrowthCompletedCompleted
NCHRP 20-07/Task 111Support for the AASHTO Task Group on Retroreflectivity StandardsCompleted
NCHRP 20-07/Task 112Geosynthetic Reinforcement in Roadway SectionsCompletedCompleted
NCHRP 20-07/Task 113Corrosion of Metals Above the Ground Surface: Transportation Related IssuesCompletedCompleted
NCHRP 20-07/Task 114Context Sensitive Design for Integrating Highway and Street Projects with Communities and the EnvironmentCompletedCompleted
NCHRP 20-07/Task 115Effective Practices in Consultant Usage by State Departments of TransportationCompletedCompleted---Report provided to AASHTO for distribution
NCHRP 20-07/Task 116User's Guide for Evaluating Sign RetroreflectivityCompletedCompleted
NCHRP 20-07/Task 117Benefit/Cost Study of RWIS and Anti-icing TechnologiesCompletedCompleted
NCHRP 20-07/Task 118A Supplemental Guideline for Highway Design to Accommodate Older Drivers and PedestriansCompletedCompleted
NCHRP 20-07/Task 119Environmental Best Practices CompetitionCompleted
NCHRP 20-07/Task 120Asset ManagementCompletedCompleted
NCHRP 20-07/Task 121Strategic Plan for Bridge Engineering ResearchCompleted
NCHRP 20-07/Task 122Load Rating by Load and Resistance Factor Evaluation MethodCompletedCompleted
NCHRP 20-07/Task 123Production of a U.S. Customary System of Units Version of the Year 2000 Highway Capacity ManualCompletedFunds shifted to Project 03-55(06) contract
NCHRP 20-07/Task 124Cost/Benefits of Constructability ReviewsCompletedCompleted
NCHRP 20-07/Task 125Summary of Research Peer Exchange Findings and RecommendationsCompletedCompleted
NCHRP 20-07/Task 126Production of the Year 2000 AASHTO Policy on Geometric Design of Highways and StreetsCompletedCompleted
NCHRP 20-07/Task 127A Strategic Plan (Road Map) for Pavement ResearchCompletedCompleted---Summarized in NCHRP Research Results Digest 276
NCHRP 20-07/Task 128Partnerships in Highway Development and Design for Shaping and Enhancing CommunitiesCompletedCompleted
NCHRP 20-07/Task 129Synthesis of Project Delivery TimesCompletedCompleted
NCHRP 20-07/Task 130Development of a Detailed Test Procedure by FTIR Identification for Structural Steel CoatingsCompleted
NCHRP 20-07/Task 131AASHTO Internet Applications InfrastructureCompleted
NCHRP 20-07/Task 131AAASHTO Model Committee Web SiteCompletedCompleted
NCHRP 20-07/Task 131CAASHTO Transportation Web Portal ConceptsCompletedCompleted
NCHRP 20-07/Task 132Final Review and Acceptance of LRFD Specification for WallsCompletedCompleted
NCHRP 20-07/Task 133Improved Live Load Deflection Criteria for Steel BridgesCompletedCompleted
NCHRP 20-07/Task 134Asset Management Education and Communication MaterialsCompletedCompleted as 20-24(11)
NCHRP 20-07/Task 135Geometric Design Guide for Transit Facilities on Highways and Streets - Phase IFinal
NCHRP 20-07/Task 136Support for SCOH Task Force on Forest Development RoadsCompleted
NCHRP 20-07/Task 137Synthesis of R&T Partnership Working Group ReportsCompletedCompleted
NCHRP 20-07/Task 138Recommended Procedures for the Testing of Rock-Fall BarriersCompletedCompleted
NCHRP 20-07/Task 139Application of European 2+1 Roadway DesignsCompletedCompleted---Summarized in NCHRP Research Results Digest 275
NCHRP 20-07/Task 140TEA-21 Stewardship ReportCompletedResearch in progress
NCHRP 20-07/Task 141Conformity Problems Caused by the Mismatch in SIP/Transportation Plan TimeframeFinal
NCHRP 20-07/Task 142Scoping Study for a National Strategic Plan for Managing Transportation InformationCompletedCompleted
NCHRP 20-07/Task 143Synthesis of Practice: AASHTO's National Transportation Product Evaluation Program (NTPEP)CompletedCompleted
NCHRP 20-07/Task 144Delegations of Authority to Expedite Environmental StreamliningCompletedCompleted
NCHRP 20-07/Task 145Update of the AASHTO Guide for Transportation Landscape and Environmental DesignCompletedCancelled
NCHRP 20-07/Task 146Development of a Standard Protocol for Evaluating Hydrologic and Hydraulic Engineering Software ModelsCompletedResearch in progress
NCHRP 20-07/Task 147Update of the Design Guidelines for the Control of Blowing and Drifting SnowCompletedResearch in progress
NCHRP 20-07/Task 148Evaluation of Potential Impacts on the State DOTs of the US Access Board's Recommendations on Public Rights-of-WayCompletedCompleted
NCHRP 20-07/Task 149Evaluation of 3D Computer Modeling and Electronic Information Transfer for Efficient Design and Construction of Steel BridgesCompletedResearch in progress
NCHRP 20-07/Task 150Electronic NTPEP Report: A First Generation Query-Based Program to Aid in the Assessment of Pavement Markings and Sign Sheeting MaterialsCompletedCompleted
NCHRP 20-07/Task 151ATransportation Security: Highway Emergency Response HandbookCompletedResearch in progress
NCHRP 20-07/Task 151BTransportation Security: Highway Vulnerability Assessment GuideCompletedCompleted
NCHRP 20-07/Task 151CTransportation Security: Sharing Information & Task Force SupportCompletedResearch in progress
NCHRP 20-07/Task 152Project Cost Estimating A Synthesis of Highway PracticeCompletedCompleted
NCHRP 20-07/Task 153Update of the AASHTO Transportation GlossaryCompletedCompleted
NCHRP 20-07/Task 154Update of the HOV and Park-and-Ride Facilities Design GuidesCompletedCompleted
NCHRP 20-07/Task 155Signing Standards for Two-Lane Exit Ramps with an CompletedResearch in progress
NCHRP 20-07/Task 156Finalize Two Design Examples for AASHTO Guide Specifications for Horizontally Curved Steel Highway BridgesCompleted
NCHRP 20-07/Task 157Materials Information Management System Software ReviewCompletedCompleted
NCHRP 20-07/Task 158Survey of State DOT Practice: Outsourcing and Private Sector UtilizationCompletedCompleted
NCHRP 20-07/Task 159Privatization and Commercial Use of Public Rights-of-WayCompletedCompleted
NCHRP 20-07/Task 160Two-Lane Road Analysis Methodology in the Highway Capacity ManualCompletedCompleted
NCHRP 20-07/Task 161Revision of the Draft AASHTO Guide for the Planning, Design, and Operation of Pedestrian FacilitiesCompletedCompleted
NCHRP 20-07/Task 162Guidelines for the Correlation of Test Results from Bench-Scale and Large-Scale Testing on Rolled Erosion Control Products (RECP)CompletedCompleted
NCHRP 20-07/Task 163Innovative Practices in Workforce Development for State Departments of TransportationCompletedTerminated
NCHRP 20-07/Task 163AInnovative Practices in Workforce Development for State Departments of TransportationCompletedResearch in progress
NCHRP 20-07/Task 164Revision of AASHTO R9-97 CompletedCompleted
NCHRP 20-07/Task 165A Policy Synthesis on the Economic Benefits of NTPEPCompletedCompleted
NCHRP 20-07/Task 166Acceleration of Environmental Stewardship Best Practices for Maintenance and ConstructionCompleted
NCHRP 20-07/Task 167Development of Recommended Revisions to Draft ADA Guidelines for Accessible Rights-of-WayCompletedCompleted
NCHRP 20-07/Task 168Determination of Appropriate Railing Heights for BicyclistsCompletedCompleted
NCHRP 20-07/Task 169Resolution of Comments submitted on the Draft AASHTO Guide for Context Sensitive DesignCompletedCompleted
NCHRP 20-07/Task 169BResolution of Comments submitted on the Draft AASHTO Guide for Context Sensitive Design: Liability ChapterCompletedCompleted
NCHRP 20-07/Task 170Review and Revision of the AASHTO Maintenance Manual for Roadways and BridgesCompletedCompleted
NCHRP 20-07/Task 171Identification of Conflicts with AASHTO Publications Related to Clear ZoneCompletedCompleted
NCHRP 20-07/Task 172Recommended AASHTO Design-Build Procurement GuideCompletedCompleted
NCHRP 20-07/Task 173Measuring and Communicating the Effects of Incident Management ImprovementsCompletedCompleted
NCHRP 20-07/Task 174Use of Positive Protection in Work ZonesCompletedCompleted
NCHRP 20-07/Task 176Update of Exhibits for the AASHTO Green BookCompleted
NCHRP 20-07/Task 177Synthesis of Maintenance and Durability Information for Detectable Warnings on SidewalksCompletedCompleted
NCHRP 20-07/Task 178Evaluation and Update of NCHRP Project 24-08, CompletedCompleted
NCHRP 20-07/Task 179Development of Operating Procedures for the Standing Committee on HighwaysCompletedCompleted
NCHRP 20-07/Task 180Summary of International Practice on Bridge Girder and Deck Strengthening with Fiber Reinforced Polymer (FRP) CompositesCompleted
NCHRP 20-07/Task 181Multi-State Transportation Operations Program: Status & Critical IssuesCompletedCompleted
NCHRP 20-07/Task 182Evaluation of Highway Innovative Technology Evaluation Center (HITEC)CompletedResearch in progress
NCHRP 20-07/Task 183LRFD Foundation Design Implementation and Specification DevelopmentCompletedCompleted
NCHRP 20-07/Task 184Development of a Pavement Preservation Synthesis, Research Plans, and InitiativesCompletedResearch in progress
NCHRP 20-07/Task 185Implementation of Flashing Yellow Arrow Display for Protected/Permissive Left Turn ControlCompleted
NCHRP 20-07/Task 186Updating the Calibration Report for the AASHTO LRFD CodeCompletedCompleted
NCHRP 20-07/Task 187Updating the AASHTO Guide for the Development of Bicycle FacilitiesCompletedResearch in progress
NCHRP 20-07/Task 188Mainstreaming Operations in State DOTsCompletedCompleted
NCHRP 20-07/Task 189Advancing Strategic Highway Safety Plans: Safety Leadership Forum IICompletedCompleted
NCHRP 20-07/Task 190Develop Strategy for the Testing and Evaluation of Durable Striping Materials for High Traffic Areas and Mountain PassesCompletedCompleted
NCHRP 20-07/Task 191Product Evaluation and Plant Certification of HDPE PipeCompleted
NCHRP 20-07/Task 192Update of Barrier Hardware GuideCompletedCompleted
NCHRP 20-07/Task 193LRFD Guidelines for the Seismic Design of Highway Bridges, Version 2CompletedCompleted
NCHRP 20-07/Task 194Consistency of Titles for AASHTO PublicationsCompletedCompleted
NCHRP 20-07/Task 195Development and Performance of Web Based Joint Salary SurveyCompletedThe web-based survey has been developed and submitted to AASHTO for implementation.
NCHRP 20-07/Task 196Development of a Guide to Crashworthy Bridge Rail SystemsCompletedCompleted
NCHRP 20-07/Task 197Development of a Test Method for Optical Sizing and Roundness Determination of Glass Beads Utilized in Traffic MarkingCompletedWork will be accomplished under Project 20-07 Task 243.
NCHRP 20-07/Task 198Standard Practice for Independent Assurance ProgramsCompletedCompleted
NCHRP 20-07/Task 199Update of the Strategic Plan for Bridge EngineeringCompletedCompleted
NCHRP 20-07/Task 200Synthesis of Vehicle Based Winter Maintenance TechnologiesCompletedCompleted
NCHRP 20-07/Task 201Use of Warranties in Highway ConstructionCompleted
NCHRP 20-07/Task 202Guide to Benchmarking Operations Performance MeasuresCompleted
NCHRP 20-07/Task 203Update of AASHTO Maintenance Manual to Include Systems Operations and ManagementCompletedCompleted
NCHRP 20-07/Task 204Pavement Noise Intensity Testing in Europe for Comparison to the United StatesCompletedCancelled
NCHRP 20-07/Task 205Project Delivery Workforce Management ReviewCompleted
NCHRP 20-07/Task 206A Model Guide for Condition Assessment SystemsCompleted
NCHRP 20-07/Task 207Update of the AASHTO Guide Specifications for Highway ConstructionFinalCompleted, See 20-07/Task 220
NCHRP 20-07/Task 208Update of Recommendations on Crest Vertical CurvesCompleted
NCHRP 20-07/Task 209Incorporation of Research Findings into AASHTO's Standard Specifications for Structural Supports for Highway Signs, Luminaries and Traffic SignalsCompletedCompleted
NCHRP 20-07/Task 210Guidelines for the Selection of Cable Barrier SystemsCompleted
NCHRP 20-07/Task 211Scoping study for an AASHTO Guide on Accelerating Project DeliveryCompletedCompleted
NCHRP 20-07/Task 212Development of a Model Drivers License HandbookCompleted
NCHRP 20-07/Task 213Requirements for Minimum Maintained Retroreflectivity of Pavement MarkingCompleted
NCHRP 20-07/Task 214Update of A Guide to Small Sign Support HardwareCompleted
NCHRP 20-07/Task 215Statewide Incident Reporting SystemsCompleted
NCHRP 20-07/Task 216Application of LRFD Bridge Design Specifications to High-Strength Structural Concrete: Final Project – Phase ICompletedCompleted
NCHRP 20-07/Task 217Verification and Implementation of Strut-and-Tie Model in LRFD Bridge Design SpecificationsCompletedCompleted
NCHRP 20-07/Task 218Performance-Based Maintenance ContractingFinalCancelled, refer to NCHRP Synthesis 389, Performance-Based Contracting for Maintenance
NCHRP 20-07/Task 219Testing American Traffic Marking Systems on the Spanish (AETEC) Traffic Marking Wear SimulatorCompleted
NCHRP 20-07/Task 220Update of the AASHTO Guide Specifications for Highway ConstructionCompleted
NCHRP 20-07/Task 221Traffic Incident Management + Program for Worker SafetyCompleted
NCHRP 20-07/Task 222Evaluation of the Field Implementation of the Flashing Yellow Arrow Permissive Left-Turn IndicationCompleted
NCHRP 20-07/Task 223Update Business Needs for Pavement EngineeringCompleted
NCHRP 20-07/Task 224Update of the AASHTO Guide for Contracting, Selecting, and Managing Consultants in Preconstruction EngineeringCompleted
NCHRP 20-07/Task 225Best Practices in the Management of Design Errors and OmissionsCompleted
NCHRP 20-07/Task 226Review and Update of Human Factors and Operations Issues in the AASHTO Green BookCompleted
NCHRP 20-07/Task 227Technology Transfer Guidebooks for Implementation of Innovative TechnologiesCompleted
NCHRP 20-07/Task 228Update the United States Numbered Highways (1989 Edition) and Document Current U.S. RoutesCompletedThe revised final products have been accepted and provided to AASHTO.
NCHRP 20-07/Task 229Bridge Construction Practices Using Incremental LaunchingCompleted
NCHRP 20-07/Task 230Safety and Security in Roadway TunnelsCompleted
NCHRP 20-07/Task 231Laboratory Testing of Proposed Roundabout Traffic Control OptionsCompleted
NCHRP 20-07/Task 232Development of a Guide to Update ADA Transition PlansCompleted
NCHRP 20-07/Task 233Development of a Toolkit to Assist State DOTs and Contractors in Uniformly Handling DBE requirementsCompletedThe project is completed and the final products delivered to AASHTO.
NCHRP 20-07/Task 234Guidelines for Selection of Bridge Deck Overlays, Sealers, and TreatmentsCompleted
NCHRP 20-07/Task 235Development of Testing Protocols for Surface Applied Concrete Sealers TreatmentsCompleted
NCHRP 20-07/Task 236Modification and Stabilization of Soils and Base for Use in Pavement StructuresCompletedThe project final report is available as NCHRP Web Only Documents 144 and 145.
NCHRP 20-07/Task 237Incorporation of Lane Management and Toll Plaza Design Issues in the AASHTO Green BookFinal
NCHRP 20-07/Task 238Conceptual Development of an AASHTO Guide to Systems Operations and ManagementCompleted
NCHRP 20-07/Task 239Identification and Delineation of Incident Management and Multi-Agency Emergency Response FunctionsFinalCombined with another NCHRP Project
NCHRP 20-07/Task 240Update of AASHTO Roadside Design GuideCompleted
NCHRP 20-07/Task 241Capacity Creation Through Innovative DesignFinalCancelled
NCHRP 20-07/Task 242Cost Analysis of Rehabilitation/Reconstruction of the Nation's Highway InfrastructureFinal
NCHRP 20-07/Task 243Development of a Test Method for Optical Sizing and Roundness Determination of Glass Beads Utilized in Traffic MarkingsCompletedThe project final report has been published as NCHRP Research Results Digest 346 and NCHRP Web-Only Document 156.
NCHRP 20-07/Task 244Modifications for AASHTO LRFD Bridge Design Specifications to Incorporate or Update the Guide Specifications for Design of Pedestrian BridgesFinal
NCHRP 20-07/Task 245Updating AASHTO Design and Construction Specifications ffor Temporary Works used in Bridge Construction CompletedThe final report has been provided to AASHTO.
NCHRP 20-07/Task 246Replacement Process for LED (Light Emitting Diode) Traffic SignalsCompletedPublished
NCHRP 20-07/Task 247Outdoor Advertising Sign Regulation StudyCompletedCompleted final report submitted to AASHTO
NCHRP 20-07/Task 248Guidelines for Utility Encasement Policy for Highway CrossingsCompletedCompleted final report submitted to AASHTO
NCHRP 20-07/Task 249Asset Management Approaches to ADA ComplianceCompleted
NCHRP 20-07/Task 250Update AASHTO ''Guide for Snow and Ice Control''Completed
NCHRP 20-07/Task 251Consideration of Pavement Preservation in the AASHTO Mechanistic-Empirical Pavement Design GuideCompleted
NCHRP 20-07/Task 252Guidelines for Implementing Quality Control and Quality Assurance for Bridge InspectionFinal
NCHRP 20-07/Task 253Subcommittee on Systems Operations and Management Strategic Plan UpdateCompleted
NCHRP 20-07/Task 254Vehicle Size and Weight Management (VSW) Technology Transfer/Best PracticesFinal
NCHRP 20-07/Task 255Development of a Test Method To Determine the Ability of Adhesive Anchors To Resist Sustained Tensile LoadCompletedThe project final report is available as NCHRP Report 639.
NCHRP 20-07/Task 256Safety Impacts of the Emerging Digital Display Technology for Outdoor Advertising SignsCompleted
NCHRP 20-07/Task 257Crash Tested Precast Concrete Barrier Designs and Anchoring MethodsCompleted
NCHRP 20-07/Task 258Identification of Cross-Cutting Issues Related to the Development, Management, and Delivery of Transportation Projects and ProgramsFinalThe final report has been submitted to AASHTO.
NCHRP 20-07/Task 259Assessment of State-of-the-Practice for Identifying Earth Retaining Structure (ERS)Final
NCHRP 20-07/Task 260Development of Guidelines for Conducting Effective Customer Surveys Related to Highway Maintenance OperationsCompletedThe project has been completed and the final report submitted to AASHTO
NCHRP 20-07/Task 261Best Practices for Implementing Quality Control and Quality Assurance for Tunnel InspectionFinal
NCHRP 20-07/Task 262Review and Update of the AASHTO Guide Specifications for Seismic Isolation DesignFinal
NCHRP 20-07/Task 263Update of the AASHTO Guide for the Planning, Design, and Operation of Pedestrian FacilitiesCompleted The final report has been accepted and forwarded to AASHTO.
NCHRP 20-07/Task 264Guidance for Design and Selection of PipesCompletedCompleted final report submitted to AASHTO.
NCHRP 20-07/Task 265Electronic Publications Delivery System: AASHTO’s Next StepCompletedThe project has been completed and the final report submitted to AASHTO
NCHRP 20-07/Task 266Development of an Alternative Calibration Method for AASHTO T 153Completed
NCHRP 20-07/Task 267Potential for Saving Lives with Various Countermeasures to Meet AASHTO’s New Safety GoalCompleted
NCHRP 20-07/Task 268SCOM Strategic Planning WorkshopCompleted
NCHRP 20-07/Task 269Feasibility of Using Incentives to Facilitate Utility RelocationsCompletedCompleted final report submitted to AASHTO
NCHRP 20-07/Task 270Application of AASHTO LRFD Specifications to Design of Sound BarriersFinal
NCHRP 20-07/Task 271Graphical Traffic Signal Design Aid Based on the MUTCDCompleted
NCHRP 20-07/Task 272Rheological Characterization of Flow Table Reference MaterialCompleted
NCHRP 20-07/Task 273Update of the AASHTO Policy on Geometric Design of Highways and Streets (Green Book)Completed
NCHRP 20-07/Task 274Price Indexing in Transportation Construction ContractsCompleted
NCHRP 20-07/Task 275SCOH Strategic Plan Support CompletedCompleted
NCHRP 20-07/Task 276Development of Guidelines for Rehabilitation of Existing highway and Rail Transit TunnelsFinal
NCHRP 20-07/Task 277Update to AASHTO 'Pavement Management Guide'Completed
NCHRP 20-07/Task 278Production of the new AASHTO Guide to EstimatingCompleted
NCHRP 20-07/Task 279Development of a Work Plan for the 2nd Edition of the Highway Safety ManualCompleted
NCHRP 20-07/Task 280AASHTO MATERIALS “C” SPECIFICATIONSCompletedAASHTO HSCOM has received the project deliverables.
NCHRP 20-07/Task 281Strategic Plan for the Development and Maintenance of AASHTO Standards by AASHTO Member Departments Completed
NCHRP 20-07/Task 282Research Needs Assessment for Roadside Workers and Vehicle SafetyCompleted
NCHRP 20-07/Task 283Evaluation of the Flashing Yellow Arrow (FYA) Permissive Left Turn in Shared Yellow Signal SectionsFinal
NCHRP 20-07/Task 285Recalibration of the LRFR Load Factors in the AASHTO Manual for Bridge EvaluationFinal
NCHRP 20-07/Task 286Finalization of a new AASHTO Drainage Manual - Volume 1, Policy; Volume 2, ProceduresCompletedCompleted final report submitted to AASHTO for publishing.
NCHRP 20-07/Task 287Roadmap for Winter Maintenance ResearchCompleted
NCHRP 20-07/Task 288National Calibration of MEPDG Rigid Pavement Models Based on Corrected CTE ValuesCompleted
NCHRP 20-07/Task 289Comparative Performance Evaluation of Pavement Marking Materials at the NTPEP Test FacilityCompleted
NCHRP 20-07/Task 290Highway Safety Training Synthesis/RoadmapCompleted
NCHRP 20-07/Task 291Transportation Operations Research Communications, Awareness Needs Assessment & Implementation Plan for State DOTsFinal
NCHRP 20-07/Task 292SCOH Strategic Plan: Completion, implementation planning, and governanceCompleted
NCHRP 20-07/Task 294Continuation of Funding of 20-07 Task 245 - Update Bridge Temporary WorksFinal
NCHRP 20-07/Task 295Survey of Existing XML Schemas for Incorporation into TransXMLCompleted
NCHRP 20-07/Task 296Alignment of the Draft AASHTO Transit Guide with the AASHTO Green BookFinal
NCHRP 20-07/Task 297Analysis of usRAP Completed
NCHRP 20-07/Task 298Operations Center of ExcellenceFinal
NCHRP 20-07/Task 299Resolution of Comments on the Draft AASHTO Bike GuideCompletedThe final report has been provided to AASHTO for final balloting.
NCHRP 20-07/Task 300Methods for Estimating the Benefits for Winter Maintenance OperationsCompleted
NCHRP 20-07/Task 301Measuring Cement Particle Size and Surface Area by Laser DiffractionCompletedThe project final report is available as NCHRP Research Results Digest 382.
NCHRP 20-07/Task 302Value Analysis for Linear Referencing SystemsFinalFinal report submitted to AASHTO TIG
NCHRP 20-07/Task 303Synthesis of Truck Size and Weight ResearchFinal
NCHRP 20-07/Task 304AASHTO Publications - Future Road MapFinalThe project is canceled
NCHRP 20-07/Task 305Analysis of New Highway Lighting TechnologiesFinal
NCHRP 20-07/Task 306Revision of Strut-and-Tie Provisions in the AASHTO LRFD Bridge Design SpecificationsFinal
NCHRP 20-07/Task 307Updated Research for Collision Damage and Repair of Prestessed Concrete BeamsFinal
NCHRP 20-07/Task 308Completion of the new AASHTO A Practical Guide to Estimating, Part 2FinalNCHRP Proejct 20-07/Task 278 has been expanded in scope and budget to include this project
NCHRP 20-07/Task 309Challenges and Opportunities: A Strategic Plan for Equipment Management ResearchCompleted
NCHRP 20-07/Task 310Determination of Current Levels of Retroreflectance Attained and Maintained by the State Departments of TransportationCompleted
NCHRP 20-07/Task 311Development of a Warm Mix Asphalt Technology Evaluation ProgramCompleted
NCHRP 20-07/Task 312Successful Practices for Automating Utility PermitsFinal
NCHRP 20-07/Task 313Safety Checklists and Design Guidelines for Evaluation of Outdoor Advertising Signs and Permit Locations by Departments of Transportation (DOTs)FinalThe project is canceled
NCHRP 20-07/Task 314Recommended Protocol for Developing Crash Modification FactorsCompleted
NCHRP 20-07/Task 315Transportation Asset Management for Ancillary StructuresCompleted
NCHRP 20-07/Task 316Establishment of Appropriate Guidelines for Use of the Direct and Indirect Design Methods for Reinforced Concrete PipeFinal
NCHRP 20-07/Task 317Update of AASHTO Publication MEPDG-1Completed
NCHRP 20-07/Task 318Revised Chapter 8, Winter Maintenance Operations and Salt, Sand, and Chemical Management, of the Final Report on NCHRP Project 25-25(04) Completed
NCHRP 20-07/Task 319Evaluating Applicability of the Dual-Ring Test Procedure for Assessing the Cracking Tendency of Repair MaterialsCompleted
NCHRP 20-07/Task 320Advanced GIS Visualization Techniques for Geospatial Business Intelligence and Information IntegrationFinal
NCHRP 20-07/Task 321Developing a Framework for Emergency Responder/Roadside Worker Struck-by/Near-miss DatabaseCompleted
NCHRP 20-07/Task 322State of Readiness of the Dedicated Short Range Communications (DSRC) Spectrum for Early deployment of Connected Vehicle Transportation SystemsFinalCombined with another NCHRP Project 03-101
NCHRP 20-07/Task 323Developing a Long-Range Strategic Plan for the MUTCDFinal
NCHRP 20-07/Task 324NCHRP's Role in Maintaining AASHTO Guidelines and SpecificationsCompletedRecommendations provided to AASHTO SCOR and SCOH
NCHRP 20-07/Task 325Updating the AASHTO LRFD Wind Loads ProvisionsFinal
NCHRP 20-07/Task 326Review and Update of the AASHTO Movable Bridge Inspection, Evaluation and Maintenance Manual, 1st Edition - Scoping StudyFinalProject is canceled, and the allocated funds will supplement NCHRP Project 14-32
NCHRP 20-07/Task 327Developing Recalibrated Concrete Pavement Performance Models for the Mechanistic-Empirical Pavement DesignCompleted
NCHRP 20-07/Task 328Update of the 1995 AASHTO/AGC/ARTBA ‘A Guide to Standardized Highway Barrier Hardware’ (1995 Guide)CompletedFinal report submitted to AASHTO SCOE
NCHRP 20-07/Task 329Alternative Delivery Methods for Winter OperationsCompleted
NCHRP 20-07/Task 330Waterproofing of Bridge Decks Using Pavement Preservation Products AnticipatedProject cancelled.
NCHRP 20-07/Task 331Report On the Methods and Standards to Measure the Permeability of ConcreteCompleted
NCHRP 20-07/Task 332User’s Guide to Develop Highway Safety Manual Safety Performance Function Calibration FactorsCompleted
NCHRP 20-07/Task 333Comparing the Corrosion Protection of Hot Dip Versus Continuously Galvanized W-Beam Guardrail SectionsCompleted
NCHRP 20-07/Task 334Primer on the Joint Use of the HSM and HFGFinal
NCHRP 20-07/Task 335Updating the Strategic Plan for the AASHTO Highway Subcommittee on Bridges and StructuresFinal
NCHRP 20-07/Task 336Emergency Exit Signs Within Highway TunnelsFinalProject is canceled, and the allocated funds will supplement NCHRP Project 20-59 (47)
NCHRP 20-07/Task 337Proposed AASHTO Guidelines for Complex Bridge Inspection Final
NCHRP 20-07/Task 338Hydrology for Water Quality Analysis and DesignCompleted
NCHRP 20-07/Task 339Best Practices for Cracking Sealing and Crack Filling of Asphalt PavementsCompleted
NCHRP 20-07/Task 340National Training: Challenges and OpportunitiesCompleted
NCHRP 20-07/Task 341Guidelines for the Development HSM Part C Predictive Methods ChaptersFinalNCHRP Project 17-71 has been expanded in scope and budget to include this project
NCHRP 20-07/Task 342Wind Turbulence-Structure Interaction and Aeroelastic Instability for Long-Span Flexible Girder SystemsFinalNCHRP Project 20-07/Task 325 has been expanded in scope and budget to include this project
NCHRP 20-07/Task 343An Update to AASHTO’s Guidelines for Geometric Design of Very Low-Volume Local RoadsFinalNCHRP Proejct 15-47 has been expanded in scope and budget to include this project
NCHRP 20-07/Task 344Practical Cost Estimating: Development of TrainingFinal
NCHRP 20-07/Task 345Planning for Transportation System Management & OperationsFinal
NCHRP 20-07/Task 346Completion of the Update to the AASHTO Guide for Transportation Landscape and Environmental DesignFinal
NCHRP 20-07/Task 347Test Methods of Watertightness of Culvert JointsFinal
NCHRP 20-07/Task 348Review of the AASHTO LRFD Movable Highway Bridge Design Specifications for future updatesFinal
NCHRP 20-07/Task 349Guidelines for Developing Materials Acceptance Plans for Alternative Contracting MethodsCompleted
NCHRP 20-07/Task 350U.S. Bicycle Route Guide SigningFinal
NCHRP 20-07/Task 351Update to AASHTO’s Visualization in Transportation: A Guide for Transportation AgenciesFinalCompleted.
NCHRP 20-07/Task 352Next Generation AASHTO Transportation System Management & Operations Strategic DirectionFinal
NCHRP 20-07/Task 353Development of a Strategic Research Plan for SCOHTSFinal
NCHRP 20-07/Task 354Work Zone Speed Limits and Crash Data PracticesFinal
NCHRP 20-07/Task 355Guidelines for Reliable Fit-Up of Steel I-Girder BridgesFinal
NCHRP 20-07/Task 356Strategic Plan for Prioritization and Selection of Research Proposals for Hydrology and HydraulicsFinal
NCHRP 20-07/Task 357Guidelines for Collecting, Processing, and Managing Roadway Asset Inventory DataCompleted
NCHRP 20-07/Task 358Reducing Risks to Worker Safety in Work Zones Due to Distracted DriversCompleted
NCHRP 20-07/Task 359Next Generation National Transportation System Management & Operations (TSM&O) Research FrameworkFinal
NCHRP 20-07/Task 360Development of a Strategic Plan for the Technical Committee on Roadside Safety (TCRS)Final
NCHRP 20-07/Task 361Hamburg Wheel-Track Test Equipment Requirements and Improvements to AASHTO T 324Completed
NCHRP 20-07/Task 362Quantifying the Costs and Benefits of Partnering on Projects Delivered Using Traditional and Alternative Contracting MethodsFinal
NCHRP 20-07/Task 363Guidelines for Emergency Ventilation Smoke Control in Roadway TunnelsFinal
NCHRP 20-07/Task 364Revision of AASHTO PP-74 Test Method for Optical Sizing and Roundness Determination of Glass Beads Utilized in Traffic MarkingsCompleted
NCHRP 20-07/Task 365Strategic Transportation Systems Management & Operations Program Planning Lead States Initiative Development & EvaluationCompleted
NCHRP 20-07/Task 366Accessing Information about Transportation Systems Management and Operations Performance MeasurementFinal
NCHRP 20-07/Task 367Analysis of Crash Contributing Factors to Determine Appropriate CountermeasuresAnticipated
NCHRP 20-07/Task 368Development of a Roadmap for Use of SHRP2 Safety Data to Enhance Existing PublicationsFinal
NCHRP 20-07/Task 369Update of SCOH Strategic PlanFinalThe project is canceled
NCHRP 20-07/Task 370Development of a Strategic Plan for the Subcommittee on Traffic Engineering (SCOTE)Final
NCHRP 20-07/Task 371DOT Technical Assistance in Using the HFGFinalThe project is canceled
NCHRP 20-07/Task 372Evaluation of MASH Test VehiclesFinal
NCHRP 20-07/Task 373Utility Coordination Best Practices for Design-Build and Alternative Contracting ProjectsFinalCompleted.
NCHRP 20-07/Task 374Guidelines for Selecting Sign Sheeting Materials for AASHTO M268Final
NCHRP 20-07/Task 375Improvements to the Dry Back Procedure of AASHTO T 209Completed
NCHRP 20-07/Task 376Transportation Agency ITS Infrastructure Decisions Considering V2I Deployment Completed
NCHRP 20-07/Task 377Standardized Format for Bridge and Structure Information Models Final
NCHRP 20-07/Task 378Assessing Risk for Bridge ManagementFinal
NCHRP 20-07/Task 379AASHTO Highway Subcommittee on Maintenance Strategic Plan UpdateCompleted
NCHRP 20-07/Task 380Proposed AASHTO Manual for the Maintenance of Roadways and Bridges Final
NCHRP 20-07/Task 381Rating Concrete Permeability Based on Resistivity MeasurementsFinalNCHRP Project 18-19 has been expanded in scope and budget to include this project
NCHRP 20-07/Task 382Longer Pavement Life from Increased In-Place Density of Asphalt PavementsCompleted
NCHRP 20-07/Task 383Review and update of the AASHTO Roadside Design GuideCompleted
NCHRP 20-07/Task 384Core Competencies for Key Safety AnalysesFinal
NCHRP 20-07/Task 385Traffic Incident Management Technical Advisory Group (TIMTAG) Business PlanFinal
NCHRP 20-07/Task 386Update to AASHTO “Guide Specifications for Highway Construction”Completed
NCHRP 20-07/Task 387Maintenance Actions to Address Fatigue Cracking in Steel Bridge Structures Final
NCHRP 20-07/Task 388Guidelines for Design and Construction of Temporary BridgesFinal
NCHRP 20-07/Task 389Implications of State Departments of Transportation (DOTs) Participation in the One Call Process as an Underground Facility OperatorCompletedCompleted
NCHRP 20-07/Task 390Parametric Study & Cost Effects for the USDOT Truck Size & Weight Study VehiclesFinal
NCHRP 20-07/Task 391Energy Criteria for Maintaining Fully Animated Particles of Loose Asphalt in AASHTO T 209 TestingCompleted
NCHRP 20-07/Task 392Plan for an AASHTO Operations GuideFinal
NCHRP 20-07/Task 393Motor Vehicle Safety Countermeasures: Impacts on Pedestrian and Bicyclist SafetyFinal
NCHRP 20-07/Task 394Development of Performance-Based Geometric Design Content for the Next Edition of the AASHTO Green BookFinal
NCHRP 20-07/Task 395MASH Equivalency of NCHRP 350-Approved Bridge Railings Final
NCHRP 20-07/Task 396Updating the AASHTO Seismic Hazard Maps and Site CoefficientsFinalNCHRP Project 12-106 has been expanded in scope and budget to include this project
NCHRP 20-07/Task 397Characteristics of Decommissioned BridgesFinal
NCHRP 20-07/Task 398Development of Performance-Based Geometric Design Content for the Next Edition of the AASHTO Green BookFinal
NCHRP 20-07/Task 399Identifying Bridge Maintenance and Preservation Activities which Minimize Environmental ImpactFinal
NCHRP 20-07/Task 400Effect of Elevation on Rolling Thin Film Oven Aging of Asphalt BindersCompleted
NCHRP 20-07/Task 401Addressing Roadside Safety: A Systemic Approach to Hardware Replacement Analysis to Support MASH ImplementationFinal
NCHRP 20-07/Task 402Proposed Modification to AASHTO LRFD Reinforced Concrete Interface Shear Design and DetailingFinalThe project is Canceled
NCHRP 20-07/Task 403Develop Detailed Elements for Movable Bridge Inspection and ManagementFinalThe project is canceled
NCHRP 20-07/Task 404Reevaluation of the Side Friction Values used to Determine Horizontal Curve Radii Using Crash DataFinalThe project is canceled
NCHRP 20-07/Task 405Reevaluation of the Perception and Reaction Time and Deceleration Rates for Stopping FinalThe project is canceled
NCHRP 20-07/Task 406Development of a Framework for Balanced Asphalt Mixture DesignCompleted
NCHRP 20-07/Task 407Utility Coordination Efficiency, Safety, Cost, and Schedule Impacts using various Contracting MethodsFinalFinal
NCHRP 20-07/Task 408Transportation System Management and Operations (TSMO) Workforce: Skills, Positions, Recruitment, Retention, and Career DevelopmentFinal
NCHRP 20-07/Task 409ITS Communications Integration Needs for Legacy and Emerging Programs Including FinalThe project is canceled
NCHRP 20-07/Task 410Load Rating for the Fast Act Emergency Vehicles Ev-2 and Ev-3Final
NCHRP 20-07/Task 411Review and Update of AASHTO Standard Practice R 87Completed
NCHRP 20-07/Task 412Adjustments to the Superpave Volumetric Mixture Design Procedure for Selecting Optimum Asphalt ContentCompleted
NCHRP 20-07/Task 413Relocation and Acquisition of Outdoor Advertising Signs Impacted by State Highway Projects: Time and Cost ComparisonFinal
NCHRP 20-07/Task 414Benefits of Adaptive Traffic Control Deployments -- A Review of Evaluation StudiesFinalFinal Report and (AT)2C tool available for download.
NCHRP 20-07/Task 415Proposed AASHTO Guidelines for Bottom Flange Limits of Steel Box GirdersFinal
NCHRP 20-07/Task 416Alternative Technologies for Mitigating the Risk of Injuries and Deaths in Work ZonesFinal
NCHRP 20-07/Task 417Reorganization and Strategy to Update the AASHTO Drainage ManualCompleted
NCHRP 20-07/Task 418An Impact and Value Analysis of Requiring Geo-spatial Locations for Utility Installation As-builtsFinalFinal contractor's report is available for download.
NCHRP 20-07/Task 419Accommodation of Small Cell Sites within Public Rights-of-Way (ROW)Final
NCHRP 20-07/Task 420Road User Understanding of Bicycle Signal Symbol IndicationsFinal
NCHRP 20-07/Task 421Review and Update of AASHTO Standard Methods of Test T27 and T30Final
NCHRP 20-07/Task 422User Review of the AASHTO Guide for Local Calibration of the MEPDGCompleted
NCHRP 20-07/Task 423Planning for a Comprehensive Update and Restructuring of AASHTO’s A Policy on Geometric Design of Highways and Streets (8th Edition)Final
NCHRP 20-07/Task 424AASHTO Guidelines for the Operation of Movable Bridges from Remote LocationsFinal
NCHRP 20-07/Task 425Emerging LED Technologies and Use within TunnelsFinal
NCHRP 20-07/Task 426Challenges and Opportunities: A Strategic Plan for Equipment Management ResearchCompleted
NCHRP 20-07/Task 427Developing a Recommended AASHTO Standard Practice for Selection of Temperature-Measuring DevicesCompleted
NCHRP 20-07/Task 428Update of the 2012 AASHTO Guide Specification for Design of Bonded FRP Systems for Repair and Strengthening of Concrete Bridge ElementsCompleted
NCHRP 20-100Return on Investment in Transportation Asset Management Systems and PracticesFinal
NCHRP 20-101Guidelines to Incorporate the Costs and Benefits of Adaptation Measures in Preparation for Extreme Weather Events and Climate ChangeCompleted
NCHRP 20-102Impacts of Connected Vehicles and Automated Vehicles on State and Local Transportation Agencies--Task-Order SupportActive
NCHRP 20-102(01)Policy and Planning Actions to Internalize Societal Impacts of CV and AV Systems into Market Decisions Final
NCHRP 20-102(02)Impacts of Regulations and Policies on CV and AV Technology Introduction in Transit OperationsFinalPublished as Web-Only Document 239
NCHRP 20-102(03)Challenges to CV and AV Application in Truck Freight OperationsFinalPublished as Web-Only Document 231
NCHRP 20-102(04)Evaluation Guidance for Automated Vehicle Pilot and Demonstration ProjectsFinal
NCHRP 20-102(05)Strategic Communications Plan for NCHRP Project 20-102FinalCanceled as the research objective is part of the NCHRP communication plan efforts
NCHRP 20-102(06)Road Markings for Machine VisionFinal
NCHRP 20-102(07)Implications of Automation for Motor Vehicle CodesFinal
NCHRP 20-102(08)Dedicating Lanes for Priority or Exclusive Use by CVs and AVsFinal
NCHRP 20-102(09)Updating Regional Transportation Planning and Modeling Tools to Address Impacts of Connected and Automated VehiclesFinal
NCHRP 20-102(10)Cybersecurity Implications of CV/AV Technologies on State and Local Transportation AgenciesFinalThis project is incorporated into NCHRP Project 03-127
NCHRP 20-102(11)Mobility-on-Demand and Automated Driving Systems: A Framework for Public-Sector AssessmentCompletedPublication pending as NCHRP Research Report 1009 and NCHRP Web-Only Document 331; publication expected Fall 2022.
NCHRP 20-102(12)Business Models to Facilitate Deployment of CV Infrastructure to Support AV OperationsFinalResearch Report is available as NCHRP Web-Only Document 289
NCHRP 20-102(13)Planning Data Needs and Collection Techniques for CV/AV ApplicationsFinalNCHRP Project 08-119 has been expanded in scope and budget to include this project
NCHRP 20-102(14)Data Management Strategies for CV/AV Applications for OperationsFinalNCHRP Project 08-119 has been expanded in scope and budget to include this project
NCHRP 20-102(15)Impacts of Connected and Automated Vehicle Technologies on the Highway Infrastructure Final
NCHRP 20-102(16)Impacts of Connected, Automated Vehicle Technologies on Traffic Incident Management ResponseActive
NCHRP 20-102(17)Deployment Guidance for CV Applications in the Open Source Application Development PortalFinalProject Cancelled
NCHRP 20-102(18)Minimum Safety Data Needed for Automated Vehicle Operations and Crash AnalysisFinalNCHRP 17-91 has been expanded in scope and budget to include this project
NCHRP 20-102(19)Update AASHTO’s Connected Vehicle/Automated Vehicle Research RoadmapFinalNCHRP 20-102(19)B will update this project
NCHRP 20-102(19)BUpdated Research Roadmap for NCHRP 20-102, Impacts of Connected Vehicles and Automated Vehicles on State and Local Transportation AgenciesActive
NCHRP 20-102(20)Preparing the Transportation Workforce for the Deployment of Emerging TechnologyPending
NCHRP 20-102(21)Infrastructure Modifications to improve the Operational Domain of Automated VehiclesFinalNCHRP 20-102(24) has been expanded in scope and budget to include this project.
NCHRP 20-102(22)State and Local Impacts of Automated Freight Transportation SystemsCompletedFinal deliverables pending.
NCHRP 20-102(23)Potential Impacts of Highly Automated Vehicles and Shared Mobility on Traveler BehaviorFinalTCRP B-47 has been expanded in scope and budget to include this project
NCHRP 20-102(24)Infrastructure Modifications to Improve the Operational Conditions of Automated VehiclesPendingContract pending at this time.
NCHRP 20-102(25)Readiness and Effectiveness of Freeway-Based Corridor V2X Applications for Improving Congestion and SafetyFinalProject Cancelled
NCHRP 20-102(26)Dynamic Curbside Management: Keeping Pace with New and Emerging Mobility and Technology in the Public Right of Way Final
NCHRP 20-102(27)Realistic Timing Estimates for Automated Vehicle Implementation CompletedResearch complete. Publication decision pending.
NCHRP 20-102(28)Preparing Transportation Agencies for Connected and Automated Vehicles in Work ZonesCompleted
NCHRP 20-102(29)Incorporating New Mobility Options into Travel Demand Forecasting and ModelingActive
NCHRP 20-102(30)Equity Impacts of Shared AVs on Transportation Disadvantaged CommunitiesFinalTCRP B-47 has been expanded in scope and budget to include this project
NCHRP 20-102(31)Unintended Consequences of AVs on Infrastructure Owner-OperatorsFinalNCHRP Project 23-15 has been expanded in scope and budget to include this project.
NCHRP 20-102(32)Safety Implications in a Mixed Vehicle EnvironmentFinalNCHRP 17-91 and BTSCRP BTS-07 have been expanded in scope and budget to include this project
NCHRP 20-102(33)A Guide to Enhancing the Safety of Vulnerable Road Users in a CAV FutureRFP
NCHRP 20-102(34)Toolbox for Navigating the Land-Use Impacts of the Automated Vehicle EcosystemActive
NCHRP 20-102(35)C/AV Applications for IOO FleetsFinalNCHRP 14-42 has been expanded in scope and budget to include this project
NCHRP 20-103Guidance for Development and Management of Sustainable Information PortalsFinal
NCHRP 20-104Capturing and Learning Essential Consultant-Developed Knowledge within Departments of TransportationFinal
NCHRP 20-105Development of Course Outlines for Ahead of the Curve Training Program: Mastering the Management of Transportation Research Completed
NCHRP 20-105BDevelopment of Course Outlines for Ahead of the Curve Training Program: Mastering the Management of Transportation ResearchActive
NCHRP 20-106Framing Surface Transportation Research for the Nation's FutureFinal
NCHRP 20-107Effective Construction Project Staffing Strategies for Transportation AgenciesFinalPublished as NCHRP Research Report 923..
NCHRP 20-108Guide to Sustaining a Culture of Innovation within Departments of TransportationFinal
NCHRP 20-109Enhancement of the Transportation Research ThesaurusFinalPublished as NCHRP Research Report 874: The Transportation Research Thesaurus: Capabilities and Enhancements
NCHRP 20-110A Guide to Ensure Access to the Publications and Data of Federally Funded Transportation-Related ResearchCompleted
NCHRP 20-111GBest Practices for State DOT Research Program Peer ExchangesFinal
NCHRP 20-111JSuccessful Practices for State Transportation Research Office's Complying with 2 CFR 200FinalComplete. Final report posted.
NCHRP 20-112A Research Roadmap for Transportation and Public HealthFinal
NCHRP 20-113Research Roadmap -- Transformational Technologies (other than CV/AV)Final
NCHRP 20-113ASupport for TRB Symposium on Transformational Technologies Affecting TransportationFinal
NCHRP 20-113FTopical White Papers for the TRB Forum on Automated Vehicles and Shared MobilityFinal
NCHRP 20-114Multimodal Freight Transportation Research RoadmapFinalSubmitted to the AASHTO Special Committee on Freight
NCHRP 20-116An Emergency Management Playbook for State Transportation AgenciesCompleted
NCHRP 20-117Deploying Transportation Resilience Practices in State DOTsCompleted
NCHRP 20-118Benchmarking and Comparative Measurement for Effective Performance Management by Transportation AgenciesFinal
NCHRP 20-119Evaluating the Suitability of Roadway Corridors for Use by Monarch ButterfliesCompletedA pre-publication of the final report is available at
NCHRP 20-120Next Generation Transportation Pooled Fund (TPF) WebsiteActive
NCHRP 20-121State DOT Contributions to the Study, Investigation, and Interdiction of Human TraffickingFinalPhase II will be conducted under NCHRP 20-121A
NCHRP 20-121ACountering Human Trafficking: A Toolkit for State DOTsPending
NCHRP 20-122Rural Transportation Issues: Research RoadmapCompleted
NCHRP 20-123Support for AASHTO Committees and CouncilsActiveIndividual task hyperlinks available below.
NCHRP 20-123(01)Transportation Asset Management Strategic Planning and Research Roadmap DevelopmentFinal
NCHRP 20-123(02)Research Roadmap for the AASHTO Council on Active TransportationFinal
NCHRP 20-123(03)Staying Nimble: Organizational Development for the Cutting EdgeFinalCombined with NCHRP 20-44( 11)
NCHRP 20-123(04)Development of a Risk Management Strategic Plan and a Research RoadmapFinal
NCHRP 20-123(05)Support for Review of the Manual on Uniform Traffic Control Devices (MUTCD) Notice of Proposed Amendments (NPA)FinalThis project was canceled
NCHRP 20-123(06)Merging and Updating AASHTO Policy on the Accommodation of Utilities within Freeway Right-of-Way and AASHTO Guide for Accommodating Utilities within Highway Right-of-Way Completed
NCHRP 20-123(07)Update proposed Manual for the Maintenance of Roadways and BridgesFinal
NCHRP 20-123(08)Scoping Study to Update the AASHTO User and Non-User Benefit Analysis for HighwaysAnticipated
NCHRP 20-123(09)Feasibility Study for a Platform to Capture Innovations from State Departments of TransportationFinal
NCHRP 20-123(10)AASHTO Committee on Bridges and Structures Strategic Plan, Operating Guidelines, and Research Roadmap DevelopmentCompletedThe final deliverables have been forwarded to AAHSTO COBS for their use.
NCHRP 20-123(11)High-Value Research Marketing and Communications for 2020Final
NCHRP 20-123(12)System Mobility and Emerging Technologies (SMET): Strategic Planning Session and Research Roadmap DevelopmentActive
NCHRP 20-123(13)Strategic Plan and Research Roadmap for the AASHTO Committee on PlanningActive
NCHRP 20-123(14)Scoping Study for the Development of a Platform for State DOT and AASHTO Committee SurveysActive
NCHRP 20-123(15)Support for AASHTO Approval of the Transportation Operations ManualFinalThis project was combined with NCHRP Project 03-126
NCHRP 20-123(16)Roadmap for the Transformation to Computer Simulation-Based Assessment of Bridge RailingsPendingA research agency has been selected for the project. The contracting process is underway.
NCHRP 20-123(17)Highway Safety Manual Development and RoadmapPending
NCHRP 20-123(18)Development of a New Transportation System Operations Strategic PlanPending
NCHRP 20-123(19)A Research Roadmap for Institutionalizing Transportation Equity Pending
NCHRP 20-124Deploying Transportation Security Practices in State DOTsActiveA continuation project was approved. Contract modification is in progress.
NCHRP 20-125Strategies for Incorporating Resilience into Transportation NetworksActive
NCHRP 20-126Support for Critical Issues in Transportation and Commitment to the Future IHSFinal
NCHRP 20-126(01)Programmatic Issues of Future System PerformanceFinalPublished as NCHRP Web-Only Document 346
NCHRP 20-126(02)State Transportation Agency Multifaceted Decision-Making for Future System PerformanceCompletedpublication is pending
NCHRP 20-126(03)Advancing Practices of In Situ Nondestructive Evaluation of Highway System Asset Foundational Condition and Capability Completedpublication is pending
NCHRP 20-127Business Case and Communications Strategies for State DOT Resilience EffortsActive
NCHRP 20-128Emergency Response: Organizational and Operational Models Used by State DOTsActive
NCHRP 20-129Guide for Addressing Encampments on State Transportation Rights-of-WayPending
NCHRP 20-19(2)Pedestrian Safety and Convenience on Suburban and Rural Highways---Implementation PhaseFinal
NCHRP 20-23Kinematic Differential GPS Satellite SurveyingCompleted
NCHRP 20-24Administration of Highway and Transportation AgenciesActive
NCHRP 20-24(001)Using Market Research to Improve the Management of Transportation SystemsCompleted
NCHRP 20-24(002)Executive Management Information Systems for State Departments of TransportationCompleted
NCHRP 20-24(003)Expanding the Civil Engineering PoolCompleted
NCHRP 20-24(003)ACivil Engineering Careers in Transportation---Outreach ProgramCompleted
NCHRP 20-24(005)Public Outreach in Transportation ManagementCompleted
NCHRP 20-24(006)APerformance Measures for State Highway and Transportation AgenciesCompleted
NCHRP 20-24(006)BBusiness Systems Plan for Highway Engineering InformationCompleted
NCHRP 20-24(006)CInformation Systems for Transportation AgenciesCompleted
NCHRP 20-24(007)Alternatives to Motor Fuel Taxes for Financing Surface Transportation ImprovementsCompleted
NCHRP 20-24(007)AAlternative Approaches to the Taxation of Heavy VehiclesCompleted
NCHRP 20-24(008)Project 20-24 Series---RevisitedCompleted
NCHRP 20-24(009)State Departments of Transportation---Strategies for ChangeCompleted
NCHRP 20-24(010)Customer-Based Quality in TransportationCompleted
NCHRP 20-24(011)Asset Management Guidance for Transportation AgenciesCompleted
NCHRP 20-24(012)Avoiding Delays During the Construction Phase of Highway ProjectsCompleted
NCHRP 20-24(014)Managing Change in State Departments of TransportationCompleted
NCHRP 20-24(018)Outsourcing of State DOT Delivery of Capital ProgramsCompleted
NCHRP 20-24(019)State DOTs and E-BusinessCompleted
NCHRP 20-24(020)Using Performance Measures to Manage Change in State Departments of TransportationCompleted
NCHRP 20-24(021)Characteristics of the 21st Century Operations-Oriented State DOTCompleted
NCHRP 20-24(023)Assessing the Importance of Transportation for Major Industries and Sectors of the U.S. EconomyFinal
NCHRP 20-24(024)Transportation Mobility, Access and Safety for an Aging PopulationCompleted
NCHRP 20-24(029)CEO Leadership ForumCompleted
NCHRP 20-24(030)Performance Measurement in Context Sensitive DesignCompleted
NCHRP 20-24(031)Effective Program Delivery in a Constrained Fiscal EnvironmentCompletedThe final report has been submitted to AASHTO.
NCHRP 20-24(033)Transportation Vision 2010 and BeyondCompleted
NCHRP 20-24(034)Commuting in AmericaCompleted
NCHRP 20-24(035)Communicating Urban Congestion InformationCompleted
NCHRP 20-24(036)AASHTO Strategic Plan SupportCompleted
NCHRP 20-24(037)Measuring Performance among State DOTs: Sharing Good PracticesCompleted
NCHRP 20-24(037)AMeasuring Performance among State DOTs: Sharing Good Practices -- Construction Project Cost and ScheduleCompleted
NCHRP 20-24(037)BMeasuring Performance among State DOTs: Sharing Good Practices based on the International Roughness IndexCompletedCompleted
NCHRP 20-24(037)CMeasuring Performance Among State DOTs, Sharing Best Practices -- SafetyFinal
NCHRP 20-24(037)DMeasuring Performance Among State DOTs, Sharing Best Practices--Operations Performance Using Incident Response TimeFinal
NCHRP 20-24(037)EMeasuring Performance Among State DOTs, Sharing Best Practices— Preservation: Comparative Analysis of Bridge ConditionsFinal
NCHRP 20-24(037)FEstablishment of Comparative Performance Measures Program Infrastructure to Support National System Performance Data Collection and AnalysisCompleted
NCHRP 20-24(037)GTechnical Guidance for Deploying National Level Performance MeasurementsCompleted
NCHRP 20-24(037)HWorkshop on Transportation-System Performance Measures Suitable for National UseCompleted
NCHRP 20-24(037)IMeasuring Performance among State DOTs: Sharing Good Practices -- CongestionCompleted
NCHRP 20-24(037)JMeasuring Performance among State DOTs: Sharing Good Practices – Pavement HealthCompleted
NCHRP 20-24(037)KMeasuring Performance among State DOTs: Sharing Good Practices -- Serious Crash InjuryCompleted
NCHRP 20-24(037)LNational Report on Transportation System Performance -- State DOTs Telling the StoryCompleted
NCHRP 20-24(038)CEO Engagement OptionsCompleted
NCHRP 20-24(039)Alternative Organizational Designs for State Transportation DepartmentsFinal
NCHRP 20-24(040)Analysis and Benchmarking of State DOT Recruitment and Hiring PracticesCompleted
NCHRP 20-24(041)Project Summaries for State DOT CEOsCompleted
NCHRP 20-24(042)Guidelines for State DOT quality management systemsCompleted
NCHRP 20-24(043)Innovative Contracting for Major Transportation Projects WorkshopCompletedThe workshop was the deliverable
NCHRP 20-24(044)Highway Safety Leadership Organizational Issues; A Survey of States and Recommendations for Sustaining ProgrssCompleted
NCHRP 20-24(045)Executive Seminar, Coordinating Transportation and Land DevelopmentFinal
NCHRP 20-24(046)Freight Transportation: New Roles for State DOTsFinal
NCHRP 20-24(047)Racial and Gender Diversity in State DOTs and Transit Agencies: Phase I Benchmark ScopingCompleted
NCHRP 20-24(048)Analysis and Benchmarking of State DOT Human Resource ActivitiesFinal
NCHRP 20-24(049)Future Financing Options to Meet Highway and Transit NeedsCompleted
NCHRP 20-24(050)In-Service Training Needs for State DOTsCompleted
NCHRP 20-24(051)State DOT Leadership Forum--2006Completed
NCHRP 20-24(052)Future Options for the National System of Interstate and Defense HighwaysFinal
NCHRP 20-24(053)Twenty-First Century Leadership and Management Techniques for State DOTsFinalThe project has been completed and the products provided to AASHTO for distribution.
NCHRP 20-24(054)2006 Bottom Line Report State and National Investment Analysis: HighwaysCompleted
NCHRP 20-24(054)G2006 AASHTO Bottom Line ScopingCompleted
NCHRP 20-24(055)National Summit on Future Transportation Funding and Finance Strategies: States and Metropolitan RegionsCompleted
NCHRP 20-24(056)National Leadership Retreat for State and Local Officials to Advance a Vision of the Transportation System Required to Meet Future NeedsCompleted
NCHRP 20-24(058)Toward Developing Performance Based Federal-Aid ProgramsCompleted
NCHRP 20-24(059)Strategies for Reducing the Impacts of Surface Transportation on Global Climate ChangeCompleted
NCHRP 20-24(060)Updating AASHTO's Strategic Plan in CY 2008Completed
NCHRP 20-24(061)Issues and Practices in Performance-Based Maintenance and Operations ManagementCompleted
NCHRP 20-24(062)Communication Strategies To Increase Understanding of Funding and Revenue Needs for the Nation’s Transportation SystemCompletedThis project was part of the initial NCHRP 20-24A task-order procurement.
NCHRP 20-24(063)Partnership Approaches to Identify, Promote, and Implement Congestion Management StrategiesFinal
NCHRP 20-24(064)Implications of Performance Standards, Conformity-Style Approaches, and Other Mechanisms for Assessing Greenhouse Gas (GHG) Reduction Strategies and Integrating GHG Objectives into Transportation Decision MakingCompletedThe project was administered under the NCHRP 20-24A task-order system.
NCHRP 20-24(065)Strengthened Economic Basis for Systematic Selection of Highway and Transit ProjectsFinalThis project was removed from the NCHRP 20-24 program.
NCHRP 20-24(066)Update of Technology and Alternative Fuels AssessmentFinalThis project was removed from the NCHRP 20-24 program.
NCHRP 20-24(067)State DOT CEO Leadership Forum- Spring/Summer 2009; Pilot Study of State Driven Performance Based Management ReportingFinal
NCHRP 20-24(068)Estimating the Costs to State Governments Due to Highway-Related Debilitating Injury and Fatal CrashesCompleted
NCHRP 20-24(069)Implementable Strategies for Shifting to Direct Usage-Based Charges for Transportation FundingFinalThe project is administered under the NCHRP 20-24A task-order system.
NCHRP 20-24(070)Update the 2003 Report Reducing Greenhouse Gas Emissions from U.S. TransportationCompletedReport was published by the Pew Center.
NCHRP 20-24(071)Expediting NEPA Decisions and Other Practitioner Strategies for Addressing High Risk Issues in Project DeliveryFinal
NCHRP 20-24(072)Maximizing Highway Operational Strategies to Reduce Greenhouse Gas (GHG) EmissionsFinalThe project was cancelled in October 2011; funds were reassigned to other projects.
NCHRP 20-24(073)Economic and Employment Benefits of Highway Investments in Response to Economic Downturns: A Scoping StudyFinalStudy was conducted by TRB's Studies and Special Programs Division
NCHRP 20-24(074)Executive Strategies for Risk Management by State Departments of TransportationCompleted
NCHRP 20-24(075)Development of a Performance Management RoadmapFinalThe project was cancelled in October 2011 and funds reassigned.
NCHRP 20-24(076)Developing Surface Transportation Funding and Financing Solutions for the Coming DecadeFinalThis project was cancelled and the funds reallocated to other activities.
NCHRP 20-24(077)Support for a TRB-sponsored conference on Strategies for Meeting Critical Data Needs for State and Metropolitan Transportation AgenciesCompletedAll work was conducted by TRB staff.
NCHRP 20-24(079)Specifications for a National Study of the Future 3R, 4R, and Capacity Needs of the Interstate SystemCompleted
NCHRP 20-24(080)Assessing the Economic Benefit of Transportation Infrastructure Investment in a Mature Surface Transportation SystemFinal
NCHRP 20-24(081)Leading in Lean Times: Maximizing Resources in a Constrained EnvironmentCompleted
NCHRP 20-24(082)Increasing Consistency in the Highway Performance Monitoring System for Pavement ReportingCompleted
NCHRP 20-24(083)Alternative State DOT Organizational Models for Delivering ServicesCompleted
NCHRP 20-24(084)State DOT CEO Leadership Forum 2013Final
NCHRP 20-24(086)Critical Assessment for Future Surface Transportation Needs Analyses (Refresh the Policy Capacity of the Bottom Line/C&P)Final
NCHRP 20-24(087)State DOT Administration of Local Road Safety AidFinal
NCHRP 20-24(089)Role and Value of Transportation for U.S. Industries and SectorsActiveThe completion date shown here refers to active contracts; additional research may be undertaken as determined by the NCHRP Project 20-24 panel.
NCHRP 20-24(091)State DOT CEO Safety Leadership Forum (Support)Completed
NCHRP 20-24(092)Evaluation of State-of-the-Art Transportation Funding and Finance MethodsFinal
NCHRP 20-24(093)Public CommunicationFinal
NCHRP 20-24(094)Support for Development of AASHTO’s Strategic PlanFinal
NCHRP 20-24(095)Ensuring Essential Capability for the Future Transportation AgencyFinal
NCHRP 20-24(097)Advancing Performance Management under a National FrameworkFinal
NCHRP 20-24(098)Connected/Automated Vehicle Research Roadmap for AASHTOFinal
NCHRP 20-24(099)CEO Peer Exchange on Agency Management and Emerging Issues (2015)Final
NCHRP 20-24(100)State DOT CEO Leadership Forum – a Focus on Transportation FuturesFinal
NCHRP 20-24(102)Executive Strategies to Deliver Practical DesignFinal
NCHRP 20-24(103)Transportation Investment for Economic Development: Making the Case (Peer Exchange)Final
NCHRP 20-24(104)State DOT Implementation of MAP21 Performance Measure RulesFinal
NCHRP 20-24(105)Launching U.S. Transportation Enterprise Risk Management ProgramsFinal
NCHRP 20-24(106)Evaluation Guidance for Automated Vehicle Pilot and Demonstration ProjectsFinalThis research was conducted as NCHRP Project 20-102(04). Refer to that project for information.
NCHRP 20-24(107)Update to Transportation Governance: A 50-State Review of State Legislatures and Departments of TransportationFinal
NCHRP 20-24(108)CEO Peer Exchange on Agency Management and Emerging Issues (2016)Final
NCHRP 20-24(110)Development of Resources to Support State DOT Communications on SafetyFinal
NCHRP 20-24(111)State DOT CEO Leadership Forum on Connected & Autonomous Vehicles and Transportation Infrastructure Readiness in conjunction with 2017 ITSWC, Montreal, CanadaFinal
NCHRP 20-24(112)Connected Road Classification System (CRCS) DevelopmentFinalContractor's Final report and summary presentation are available for download and use.
NCHRP 20-24(113)CEO Orientation and Peer Exchange Workshop 2017Final
NCHRP 20-24(116)Guidance on Roles and Responsibilities in Operation of Automated VehiclesFinalProject was cancelled
NCHRP 20-24(119)Strategic Research in Support of the Connected and Automated Vehicle Executive Leadership TeamAnticipated
NCHRP 20-24(12)AImproving the Time Performance of Highway Construction ContractsCompleted
NCHRP 20-24(121)Road Usage Charge: Applying Lessons Learned in New Zealand to the United StatesFinal
NCHRP 20-24(122)A Comprehensive Study of Future Competencies for Transportation PlannersFinal
NCHRP 20-24(124)Performance Management Reporting Peer ExchangeFinal
NCHRP 20-24(125)Scoping Study to Develop the Basis for a Highway Standard to Conduct an All-Hazards Risk and Resilience AnalysisCompleted
NCHRP 20-24(126)National Automation Readiness Framework: Coast-to-Coast Automated MobilityFinalProject was cancelled
NCHRP 20-24(127)Performance Management Implementation Concerns, Issues and ChallengesCompletedProject is complete. Publication decision pending.
NCHRP 20-24(128)State-of-the-Art Review of Cooperative Automated Transportation (CAT) SystemsCompleted
NCHRP 20-24(129)CEO Peer Exchange and Strategy Forum (2019)Completed
NCHRP 20-24(13)Innovative Financing ClearinghouseCompleted
NCHRP 20-24(130)Support for Development of AASHTO’S 2021-2026 Strategic PlanFinal
NCHRP 20-24(131)Mapping the Common Interests of AASHTO CommitteesActive
NCHRP 20-24(132)Understanding Knowledge Management in Context with Other Organizational PracticesAnticipatedThis research will be conducted as NCHRP Project 23-18.
NCHRP 20-24(133)Update to Transportation Governance: A 50-State Review of State Legislatures and Departments of TransportationActive
NCHRP 20-24(135)Operational Oversight of Drones - UAS Development and Deployment: Jurisdictional Issues and OptionsFinalProject Fund was transferred to NCHRP 23-20
NCHRP 20-24(136)Enabling Knowledge Management through Leadership Strategy and CultureFinalProject fund was transferred to NCHRP Project 23-21
NCHRP 20-24(137)Assessing and Communicating the Economic and Quality of Life Benefits of Transportation Infrastructure Investments: Message TestingCompletedResearch is complete. Publication by AASHTO pending.
NCHRP 20-24(138)Collective and Individual Actions for State Departments of Transportation Envisioning and Realizing the Next Era of America’s Transportation Infrastructure – Phase ICompletedResearch is complete. Publication decision pending.
NCHRP 20-24(138)ACollective and Individual Actions to Envision and Realize the Next Era of America’s Transportation Infrastructure—Phase 2Pending
NCHRP 20-24(139)Into the 2020s: A Peer Exchange Series for State Department of Transportation CEOsActive
NCHRP 20-24(141)Advancing the Art and Science of Decision-Making Pending
NCHRP 20-24(144)Agile Project Delivery in Multi-Modal TransportationAnticipated
NCHRP 20-24(145)Harnessing the Safe System Approach to Meaningfully Improve Traffic SafetyAnticipated
NCHRP 20-24(146)Guide to Supporting and Sustaining Transportation Grant Programs for Local Governments and TribesAnticipated
NCHRP 20-24(147)Peer Exchange and Research to Identify Best Practices for Testing, Monitoring and Deployment of Automated Transportation Solutions to Support Safety, Equity and Operational EfficiencyAnticipated
NCHRP 20-24ATask-Order Support for Research on the Administration of Highway and Transportation AgenciesFinal
NCHRP 20-24BResearch Supporting the NCHRP Project Panel on Administration of Highway and Transportation AgenciesCompleted
NCHRP 20-25Training Needs for Highway Construction PersonnelCompleted
NCHRP 20-25(2)Training for Highway Construction PersonnelCompleted
NCHRP 20-25(3)Development of Training Material for Highway Construction PersonnelCompleted
NCHRP 20-26Bond and Insurance Coverages for Highway Construction ContractorsCompleted
NCHRP 20-27Adaptation of Geographic Information Systems for TransportationCompleted
NCHRP 20-27(2)Development of System and Application Architectures for Geographic Information Systems in TransportationCompleted
NCHRP 20-27(3)Guidelines for the Implementation of Multimodal Transportation Location Referencing SystemsCompleted
NCHRP 20-28Hazardous Wastes in Highway Rights-of-WayCompleted
NCHRP 20-29Development of a Multimodal Framework for Freight Transportation Investment: Consideration of Rail and Highway Trade-offsCompleted
NCHRP 20-29(2)Development of a Computer Model for Multimodal, Multicriteria Transportation Investment Analysis Completed
NCHRP 20-31Public Policy for Surface Freight TransportationCompleted
NCHRP 20-32Development of a Comprehensive Thesaurus for Transportation ResearchCompleted
NCHRP 20-32(2)Refinement of Transportation Research Thesaurus and Implementation of Updated TRIS Keyword IndexCompleted
NCHRP 20-33Facilitating the Implementation of Research FindingsCompleted
NCHRP 20-33(2)The Role of Procurement and Contracting Approaches in Facilitating the Implementation of Research FindingsCompleted
NCHRP 20-34Developing Measures of Effectiveness for Truck Weight Enforcement ActivitiesCompleted
NCHRP 20-35Plan for SHRP Follow-Up StudiesCompleted
NCHRP 20-36Highway Research and Technology -- International Information SharingActive
NCHRP 20-37Strategic Direction for the NCHRP and Other AASHTO Research ActivitiesCompleted
NCHRP 20-38Development of a Manual for State Transportation ResearchCompleted
NCHRP 20-39Improved User Access to TRIS Through the AASHTO VANCompleted
NCHRP 20-39(2)Improved Transportation Research-In-Progress Data SystemFinal
NCHRP 20-40Conversion of AASHTO Publications to Metric UnitsCompleted
NCHRP 20-41Approaches for Increasing Private-Sector Involvement in Highway Innovation ProcessCompleted
NCHRP 20-42Sustainable TransportationCompleted
NCHRP 20-43Application of CD-ROM Technology for AASHTO Technical DocumentsFinal
NCHRP 20-44NCHRP Implementation Support ProgramActive
NCHRP 20-44(01)Increasing WMA Implementation by Leveraging the State-Of-The-KnowledgeFinal
NCHRP 20-44(02)Implementation of the AASHTO Guide for Enterprise Risk Management Final
NCHRP 20-44(03)Dissemination of NCHRP Report 799: Management Guide to Intellectual Property for State Departments of TransportationFinal
NCHRP 20-44(04)Implementing Products from NCHRP Research on Adhesive Anchor SystemsCompleted
NCHRP 20-44(05)Dissemination of “NCHRP Domestic Scan 14-01: Leading Management Practices in Determining Funding Levels for Maintenance and Preservation”Final
NCHRP 20-44(06)Consultant Support for Massachusetts DOT’s Commission on the Future of Transportation in the CommonwealthFinal
NCHRP 20-44(08)NCHRP Comprehensive Communications PlanFinal
NCHRP 20-44(09)Quantitative and Qualitative Methods for Capturing the Impacts and Value of NCHRP ResearchFinal
NCHRP 20-44(11)Advancing practices for data governance, information management, and managing the impact of digitization on DOT workforcesFinal
NCHRP 20-44(12)Building Capacity for Self-Assessment of Data Effectiveness for Agency Business NeedsFinal
NCHRP 20-44(13)Implementation of NCHRP Research Report 893: The Oregon DOT Statewide Pedestrian and Bicycle PlanFinal
NCHRP 20-44(14)Implementation of NCHRP Research Report 887 - Guidance for Underwater Installation of Filter SystemsFinal
NCHRP 20-44(15)Consultant Support for implementation of Design Hydrology for Stream Restoration and Channel Stability at Stream CrossingsFinal
NCHRP 20-44(16)Implementation of IDEAL Cracking Test for Asphalt Mix Design QC/QAFinal
NCHRP 20-44(17)Implementing the Results of NCHRP Project 20-68A, Domestic Scan 17-01: Successful Approaches for the Use of Unmanned Aerial Systems by Surface Transportation AgenciesCompleted
NCHRP 20-44(18)Validation of the PFC Performance-Based Mix Design MethodCompleted
NCHRP 20-44(19)Implementation of Proposed AASHTO Standards for Asphalt Binders and MixturesCompletedPublication Decision Pending
NCHRP 20-44(21)Synthesis of State Peer Exchanges and RPPM Final
NCHRP 20-44(22)Right Sizing Transportation InvestmentsFinalImplementation Program for NCHRP 19-14
NCHRP 20-44(23)Pilot Test of Climate Change Design Practices Guide for Hydrology and HydraulicsCompletedPublication Pending
NCHRP 20-44(24)Pilot Test of Proposed Standard Practice for Recycling Agents in Asphalt Mixtures Incorporating RAP and RASCompletedPublication decision pending
NCHRP 20-44(25)Workshop to Introduce Proposed Changes to AASHTO M 320 and M 332 to Key Stakeholder GroupsCompleted
NCHRP 20-44(26)Implementing Guide Specifications for the Construction of Chip Seals, Micro Surfacing, and Fog SealsActive
NCHRP 20-44(27)Facilitating Balanced Mix Design ImplementationCompletedPublication pending
NCHRP 20-44(28)Development of a Technology Transfer Plan for State Departments of Transportation Research ProgramsActive
NCHRP 20-44(29)Training for Highway Construction Noise Prediction Model-RCNM2.0CompletedTerminated.
NCHRP 20-44(30)Measuring the Effectiveness of Public Involvement at Five State Departments of Transportation: Implementation of the NCHRP Research Report 905 ToolkitFinal
NCHRP 20-44(32)Guidelines for Selecting Travel Forecasting Methods and Techniques—ImplementationActive
NCHRP 20-44(33)Evaluating the suitability of roadway corridors for use by monarch butterflies (NCHRP 20-119)Active
NCHRP 20-44(34)Successful Practices for State Transportation Research Office's Complying with 2 CFR 200 (NCHRP 20-111J)ActiveResearch in progress.
NCHRP 20-44(35)Implementation for NCHRP Research Report 948—Guide for Pedestrian and Bicycle Safety at Alternative Intersections and InterchangesActive
NCHRP 20-44(36)Workshops on Long-Range Strategic Issues Affecting Preservation, Maintenance, and Renewal of Highway InfrastructureActive
NCHRP 20-44(37)Workshops on Performance Measures in Snow and Ice Control OperationsActive
NCHRP 20-44(39)Consultant Support for Implementation of Guidebook for Managing Data from Emerging TechnologiesActive
NCHRP 20-44(40)Implementing the Agency Capability Building Framework to Activate Organizational ChangePending
NCHRP 20-44(41)Deploying Transportation Resilience Practices in State DOTs: ImplementationAnticipated
NCHRP 20-44(43)Implementation of NCHRP Domestic Scan Report 16-02: Leading Landscape Design Practices for Cost-Effective Roadside Water ManagementAnticipated
NCHRP 20-44(44)Implementation of the research results of NCHRP Project 15-61: “Applying Climate Change Information to Hydrologic and Hydraulic Design of Transportation Infrastructure”Anticipated
NCHRP 20-44(45)Supporting State DOT Adoption of Knowledge Management PracticesAnticipated
NCHRP 20-44(46)Implementing the Asset Valuation Guide developed through NCHRP Project 23-06: “A Guide to Computation and Use of System Level Valuation of Transportation Assets”Anticipated
NCHRP 20-44(47)UAS Flight Proficiency Certification Pilot Program for State DOTsAnticipated
NCHRP 20-44(48)Peer Exchanges on Data Management and Governance PracticesAnticipatedIn development
NCHRP 20-44(49)Research Implementation Barriers and Guidance for Overcoming BarriersAnticipatedIn development
NCHRP 20-44(50)Implementation of Asphalt Pavement Raveling Detection AlgorithmAnticipatedIn development
NCHRP 20-45Scientific Approaches for Transportation ResearchCompleted
NCHRP 20-46Systems Approach to Evaluating Innovations for Integration into Highway PracticeFinal
NCHRP 20-47(1)Quality and Accuracy of Positional Data in TransportationCompleted
NCHRP 20-48Accessibility of Non-English Language Transportation InformationCompleted
NCHRP 20-48(01)Making the Business Case for Translating Non-English Transportation InformationCompleted
NCHRP 20-49Support for LTPP Advisory StructureCompleted
NCHRP 20-50(1)LTPP Data Analysis: Data Availability and FacilitationCompleted
NCHRP 20-50(10&16)LTPP Data Analysis: Influence of Design and Construction Features on the Response and Performance of New Flexible and Rigid PavementsCompleted
NCHRP 20-50(10)LTPP Data Analysis: Factors Affecting the Performance of Flexible and Rigid PavementsCompleted
NCHRP 20-50(14)LTPP Data Analysis: Significance of "As-Constructed" AC Air Voids to Pavement PerformanceCompleted
NCHRP 20-50(17)Final
NCHRP 20-50(18)LTPP Data Analysis: Significance of As-Constructed Asphalt Pavement Air Voids to Pavement PerformanceCompleted
NCHRP 20-50(19)LTPP Data Analysis: Feasibility of Using LTPP Data to Develop Relationships Between Laboratory- and Field-Derived Properties of Unbound MaterialsCompleted
NCHRP 20-50(2)LTPP Data Analysis: Relative Performance of Jointed Plain Concrete Pavements with Sealed and Unsealed JointsCompleted
NCHRP 20-50(20)LTPP Data Analysis: Develop Practical Tools and Procedures to Improve WIM Data QualityActiveResearch in progress.
NCHRP 20-50(21)Enhancements of Climatic Inputs and Related Models for Pavement ME Using LTPP Climate Tool (MERRA-2)ActiveResearch in progress.
NCHRP 20-50(22)LTPP Data Analysis: Feasibility of Using LTPP Data to Improve Use of FWD and Longitudinal Profile MeasurementsCompleted
NCHRP 20-50(22)ALTPP Data Analysis: Guidelines to Improve Use of FWD and Longitudinal Profile MeasurementsActive
NCHRP 20-50(3&4)LTPP Data Analysis: Effectiveness of Maintenance and Rehabilitation OptionsCompleted
NCHRP 20-50(5)LTPP Data Analysis: Variations in Pavement Design InputsCompleted
NCHRP 20-50(7&12)LTPP Data Analysis: Daily and Seasonal Variations in Insitu Material PropertiesCompleted
NCHRP 20-50(8&13)LTPP Data Analysis: Factors Affecting Pavement SmoothnessCompleted
NCHRP 20-50(9)LTPP Data Analysis: Feasibility of Using FWD Deflection Data to Characterize Pavement Construction QualityCompleted
NCHRP 20-51(1)LTPP Product Development: National Workshop on Pavement SmoothnessCompleted
NCHRP 20-51(2)LTPP Product Development: PCC Pavement Practice Manual and WorkshopCompleted
NCHRP 20-51(3)LTPP Product Development: Pavement Smoothness Specification for Approaches to WIM Equipment SitesCompleted
NCHRP 20-52TRAC PAC2 -- A Hands-on Educational ProgramCompleted
NCHRP 20-52(01)Implementing TRAC PAC2 -- A Hands-on Educational ProgramCompleted
NCHRP 20-53Using Customer Needs to Drive Transportation DecisionsCompleted
NCHRP 20-54Final
NCHRP 20-55TRB Study on Future Surface Transportation Agency Human Resource Needs: Strategies for Recruiting, Training, and Retaining PersonnelCompleted
NCHRP 20-56New Services for AASHTO's World Wide Web SiteFinal
NCHRP 20-57Analytic Tools to Support Transportation Asset ManagementCompleted
NCHRP 20-58Oversight Panel a Future Strategic Highway Research ProgramPending
NCHRP 20-58(1)Detailed Planning for Research on Accelerating the Renewal of America's Highways (Completed
NCHRP 20-58(2)Detailed Planning for Research on Making a Significant Improvement in Highway Safety ("Safety")Completed
NCHRP 20-58(3)Detailed Planning for Research on Providing a Highway System with Reliable Travel Times (Final
NCHRP 20-58(4)Detailed Planning for Research on Providing Highway Capacity in Support of the Nation's Economic, Environmental, and Social Goals ("Capacity")Completed
NCHRP 20-59Surface Transportation Security and Resilience ResearchActive
NCHRP 20-59(01)AASHTO Security Research Workshops and ForumCompleted
NCHRP 20-59(02)Bridge/Tunnel/Highway Infrastructure Vulnerability WorkshopsCompleted
NCHRP 20-59(03)Support for the FHWA/AASHTO Blue Ribbon Panel on Bridge and Tunnel SecurityCompleted
NCHRP 20-59(04)White Paper on Highway Security Issues for ReauthorizationCompleted
NCHRP 20-59(05)National Needs Assessment for Ensuring Transportation Infrastructure SecurityCompleted
NCHRP 20-59(06)Responding to Threats: A Field Personnel ManualCompleted
NCHRP 20-59(06)A&BSystem Security Awareness for Transportation EmployeesCompleted
NCHRP 20-59(07) & 20-59(07)ATransportation Security Information Clearinghouse & White PaperCompleted
NCHRP 20-59(08)Emergency Transportation Operations Preparedness and Response Workshop: Adaptations for Rural and International Border Crossing SituationsCompleted
NCHRP 20-59(09)Methods for Determining Transportation and Economic Consequences of Terrorist AttacksCompleted
NCHRP 20-59(10)Secure Communication InfrastructureCompleted
NCHRP 20-59(11)Emergency Traffic Operations ManagementCompleted
NCHRP 20-59(12)Security and Emergency Response 2003 Survey of State Transportation AgenciesCompleted
NCHRP 20-59(14)Research Support for the AASHTO Special Committee on Transportation SecurityCompleted
NCHRP 20-59(14)BResearch Support for the AASHTO Special Committee on Transportation Security and Emergency Management (SCOTSEM)Completed
NCHRP 20-59(14)CStrategic Plan Implementation Support Services for SCOTSEMCompleted
NCHRP 20-59(16)Preparation of Educational Materials: OutreachCompleted
NCHRP 20-59(16)ASecurity Funding Resources: A Reference Guide for State Transportation AgenciesCompleted
NCHRP 20-59(16)BSecurity Framework: Fundamentals of Transportation Security for DOTsCompleted
NCHRP 20-59(17)Guide to Risk Management of Multimodal Transportation InfrastructureCompleted
NCHRP 20-59(18)Guidelines for Transportation Emergency Training Drills and ExercisesCompleted
NCHRP 20-59(19)Transportation Response Options: Scenarios of Infectious Disease, Biological Agents, Chemical, Biological, Radiological, or Nuclear ExposureCompleted
NCHRP 20-59(21)Continuity of Operations Plans for Transportation AgenciesCompleted
NCHRP 20-59(22)A Guide to Emergency Quarantine and Isolation Controls of Roads in Rural AreasCompleted
NCHRP 20-59(23)A Guide to Emergency Response Planning at State Transportation AgenciesCompleted
NCHRP 20-59(24)A Guide to Transportation and Hazards ResourcesCompleted
NCHRP 20-59(25)Security Research PlanCompleted
NCHRP 20-59(26)National Needs Assessment for Ensuring Transportation Infrastructure Security (2009-2015)Completed
NCHRP 20-59(28)Security 101: Physical Security Standards for TransportationCompleted
NCHRP 20-59(30)Incident Command System (ICS) Training for Field Level Transportation Supervisors and Staff Completed
NCHRP 20-59(30)ATrain-the-Trainer Regional Workshops for Incident Command System (ICS) Training for Field Level Transportation Supervisors and StaffActive
NCHRP 20-59(32)A Transportation Guide for All-Hazards Emergency EvacuationCompleted
NCHRP 20-59(33)Pre-Event Planning to Support Transportation Infrastructure Recovery Completed
NCHRP 20-59(34)Methodologies to Estimate the Economic Impacts of Disruptions to the Goods Movement SystemFinalPublished as NCHRP Report 732.
NCHRP 20-59(36)Managing Catastrophic Transportation Emergencies: A Guide for Transportation Executives Completed
NCHRP 20-59(37)Debris Management Handbook for Local and State DOTsCompleted
NCHRP 20-59(41)Legal Definition of 'First Responder'Completed
NCHRP 20-59(42)A Guide to Regional Transportation Planning for Disasters, Emergencies, and Significant EventsCompleted
NCHRP 20-59(43)Incorporating Transportation Security Awareness into Routine State DOT Operations and Training Completed
NCHRP 20-59(44)A Guide for Public Transportation Pandemic Planning and ResponseCompleted
NCHRP 20-59(47)Emergency Exit Signs and Marking Systems for Highway TunnelsFinal
NCHRP 20-59(48)Effective Practices for the Protection of Transportation Infrastructure from Cyber IncidentsCompleted
NCHRP 20-59(50)Mainstreaming Transportation Hazards and Security Risk Management: CAPTA Update and Implementation Completed
NCHRP 20-59(51)ASecurity 101: A Physical & Cyber Security Primer for Transportation AgenciesCompleted
NCHRP 20-59(51)BA Guide to Emergency Management at State Transportation Agencies, Second EditionCompleted
NCHRP 20-59(51)CResearch Support for Implementing Security, Emergency Management, and Infrastructure Protection at State Transportation AgenciesCompleted
NCHRP 20-59(52)Communications Worker Credentialing RequirementsCompleted
NCHRP 20-59(53)FloodCast: A Framework for Enhanced Flood Event Decision Making for Transportation ResilienceCompleted
NCHRP 20-59(53)AA Guide to Flood Forecasting for Transportation ResilienceActive
NCHRP 20-59(54)Transportation System Resilience: Research Roadmap and White PapersCompleted
NCHRP 20-59(55)Transportation System Resilience: CEO Primer & EngagementCompleted
NCHRP 20-59(56)Support for State DOT Transportation Systems Resilience and All-Hazards ProgramsCompleted
NCHRP 20-60Performance Measures and Targets for Transportation Asset ManagementCompleted
NCHRP 20-61Transportation of Radioactive WasteFinalCompleted and published as National Research Council Report, Going the Distance
NCHRP 20-62Long-Term Viability of Fuel Taxes for Transportation FinanceCompleted
NCHRP 20-63Performance Measurement Tool Box and Reporting System for Research Programs and ProjectsCompletedFinal Report Received and Published.
NCHRP 20-63BPerformance Measurement Tool Box and Reporting System for Research Programs and ProjectsActiveResearch in Progress, website deployed, maintenance ongoing
NCHRP 20-64XML Schemas for Exchange of Transportation Data (TransXML)Completed
NCHRP 20-65Research for the AASHTO Standing Committee on Public TransportationActive
NCHRP 20-65/Task 13State Public Transportation Division Involvement in State Emergency Planning, Response, and RecoveryFinalThe report has been published as NCHRP Research Results Digest 326.
NCHRP 20-65/Task 14Current Practice and Future Guidance on the Development of SAFETEA-LU- Required Coordinated Public Transit-Human Services Transportation PlanFinalCompleted--summarized in Research Results Digest 331.
NCHRP 20-65/Task 15Updated Research Agenda for State DOT Public Transportation Divisions and NCHRP Project 20-65FinalResearch has been completed.
NCHRP 20-65/Task 16Current State Eligibility Requirements for Grantees to Qualify for Federal Section 5310 and 5311 FundsFinalThe research is completed and will be available as a Web-only document.
NCHRP 20-65/Task 17Compliance Monitoring ToolsFinalThis has been completed and published as NCHRP Research Results Digest 341
NCHRP 20-65/Task 18State DOT Best Practices for Developing a Title VI Civil Rights Program DocumentFinalThis research has been completed. Published as NCHRP Research Results Digest 340
NCHRP 20-65/Task 19Utilization by States of the Flexibility to Transfer Federal Funds Among Eligible Federal ProgramsFinalCompleted. The final report has been published as RRD 338.
NCHRP 20-65/Task 20Analysis of Rural Intercity Bus StrategyFinalPublished as Research Results Digest 356
NCHRP 20-65/Task 21Cost/Benefit Analysis of Converting a Lane for Bus Rapid TransitFinalCompleted. The report has been published as RRD 336.
NCHRP 20-65/Task 22Cost/Benefit Analysis of Converting a Lane for Bus Rapid TransitFinalPublished as NCHRP Research Results Digest 352
NCHRP 20-65/Task 23Identification of State and Local Matching Fund Requirements for State Administered Federal, and Non-Federal, Public Transportation ProgramsFinalThis research is completed and has been published as Research Results Digest 353
NCHRP 20-65/Task 24State DOT Role in the Implementation of Transportation Demand Management ProgramsFinalPublished as NCHRP Research Results Digest 348
NCHRP 20-65/Task 25Evaluate Requirements for the Utilization of Section 5311(f) Funds for Intercity Bus ServiceFinalThe final report is completed and published as Research Results Digest 356
NCHRP 20-65/Task 26A Review of Human Services Transportation Plans and Grant ProgramsFinalThis report is published as Research Results Digest 354
NCHRP 20-65/Task 27Innovative Financing Techniques and Best Practices for Providing Match on Federal Transit Administration ProjectsFinalCompleted.
NCHRP 20-65/Task 28An Analysis of Automated Transit Data Collection and Analysis Processes in State DOT Transit Units and a Toolkit for Next Generation Transit Data AnalysisFinalCompleted--Published as NCHRP Research Results Digest 373
NCHRP 20-65/Task 29Public Transportation Performance Measures: State of the Practice and Future NeedsFinalResearch completed. Published as Research Results Digest 361
NCHRP 20-65/Task 30Local Practices in Developing Coordination Partnerships with Taxicab CompaniesFinalCompleted. Published as Research Results Digest 366
NCHRP 20-65/Task 31Transporting Oversize WheelchairsFinalCompleted.
NCHRP 20-65/Task 32Models to Support State-owned Park and Ride Lots and Intermodal FacilitiesFinalCompleted --Published as Research Results Digest 359
NCHRP 20-65/Task 33Determination of State DOT Financial Auditing Requirements for their Public Transportation Assistance ProgramsFinalCompleted. Published as Research Results Digest 368
NCHRP 20-65/Task 34Statewide Transit Goal SettingFinalCompleted. Published as Research Results Digest 358
NCHRP 20-65/Task 35Development of Appropriate Tools to Evaluate the Efficiency and Effectiveness of Selected Specialized Public Transportation ProgramsFinalCompleted
NCHRP 20-65/Task 36Data Needs for Assessing Rural Transit Needs, Benefits, and Levels of ServiceFinalCompleted. Published as NCHRP Research Results Digest 376.
NCHRP 20-65/Task 37Best Accounting Practices in Sub-recipient Recording and Reporting of Program IncomeFinalCompleted.
NCHRP 20-65/Task 38Estimated Impact of Selected State DOT Cost Reduction Initiatives on the Administration of State Public Transportation ProgramsFinalPublished as NCHRP Research Results Digest 379
NCHRP 20-65/Task 39Impacts of the New Health Care Bill on Mass TransitCompletedCompleted. Published as NCHRP Research Results Digest 383.
NCHRP 20-65/Task 40Construction Management Practices for Rural Projects--An AssessmentFinalCompleted-- Published as NCHRP Research Results Digest 381
NCHRP 20-65/Task 41Survey of State Funding for Public Transportation--Ways to Improve itCompletedCompleted and published as NCHRP Web-Only Document 188.
NCHRP 20-65/Task 42Rural Public Transportation Strategies for Responding to the Livable and Sustainable Communities InitiativeFinalCompleted. Published as NCHRP Research Results Digest 375
NCHRP 20-65/Task 43Best Practices in the Electronic Administration of Federal and State Transit GrantsCompleted
NCHRP 20-65/Task 44Curriculum for New State DOT Transit Grant Managers in Administering Federal and State Transit Grant ProgramsFinal
NCHRP 20-65/Task 45New Small Urbanized Area System: A Guidance BriefCompletedCompleted.
NCHRP 20-65/Task 46Successful Methods to Acquire and Oversee the Outsourcing of Tasks and Projects Related to State DOT Management of Transit Grant ProgramsCompleted
NCHRP 20-65/Task 47MTAP Survey Tool Used to Assess FTA Contractor Performance of State DOT Triennial and Other FTA Reviews--An UpdateCompleted
NCHRP 20-65/Task 48Condition of State and Federally Funded Transit AssetsCompleted
NCHRP 20-65/Task 49Impact Assessment Indicators for Administration of Public Transportation GrantsCompleted
NCHRP 20-65/Task 50Strategic Plan for the Standing Committee on Public TransportationCompleted
NCHRP 20-65/Task 51Approaches To Improving the Grant Approval Processes for Transit ProjectsCompleted
NCHRP 20-65/Task 52Selected Indirect Benefits of State Investment in Public TransportationCompleted
NCHRP 20-65/Task 53Independent Cost Estimates for Design and Construction of Rural and Small Urban Transit FacilitiesFinalPublished as NCHRP RRD 397
NCHRP 20-65/Task 55Estimating the Long Term Impacts of MAP-21 on the Nation's Local Rural Transit Bus InfrastructureFinalCompleted--RRD 394
NCHRP 20-65/Task 56Best Practices in Rural Regional MobilityCompleted
NCHRP 20-65/Task 57Assessment of State DOT Transit Vehicle Procurement ModelsCompleted
NCHRP 20-65/Task 58Documentation of FTA Section 5310 Recipients and Projects Before the Enactment of Moving Ahead for Progress in the 21st Century (MAP-21)Completed
NCHRP 20-65/Task 59The Determination of How Federal Section 5316 Funds Were Used Under the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy For Users (SAFETEA-LU) and The Transportation Equity Act For The 21st Century (TEA 21)Completed
NCHRP 20-65/Task 60The National Mobility Management Initiative: State DOTs Connecting Users and Rides for Specialized TransportationCompletedCompleted--NCHRP Report 832 Pre-Publication Draft—Subject to Revision
NCHRP 20-65/Task 61Determine the Degree To Which JARC And New Freedom Activities are Being Continued or Initiated Under Map-21Completed
NCHRP 20-65/Task 62The National Perspective –An Assessment of Section 5310 Program Administration Under MAP-21Completed
NCHRP 20-65/Task 63DOT Oversight of Facility Projects CompletedResearch completed.
NCHRP 20-65/Task 64Health and Human Services (particularly Medicaid) Revenue as MatchCompleted
NCHRP 20-65/Task 65Best Practices for State DOTs to Meet Rural Bus Fleet Replacement and Expansion NeedsCompleted
NCHRP 20-65/Task 66States and Local Use of Administrative Resources Provided by the Federal Transit AdministrationCompleted
NCHRP 20-65/Task 67Multi-Modal Project PlanningCompleted
NCHRP 20-65/Task 68Successful Mobility Management Practices for Improving Transportation Services in Small Urban and Rural Areas Completed
NCHRP 20-65/Task 69Consolidation of Rural Transit SystemsCompleted
NCHRP 20-65/Task 70Cross Modal InvestmentCompleted
NCHRP 20-65/Task 71Transit Network Balance; Efficiency and EquityCompleted
NCHRP 20-65/Task 72Small System Alternative Fuel StrategiesCompleted
NCHRP 20-65/Task 73Best Practices and Marketing to Increase Rural Transit Ridership and Investment Completed
NCHRP 20-65/Task 74Best Practices and Tools for Addressing Transportation Needs and Public Transit Demands to Support the Integration of the Olmstead Population In Community SettingsCompleted
NCHRP 20-65/Task 75Baseline Research on Allowable In-Kind and Local Match SourcesCompleted
NCHRP 20-65/Task 76Opportunities for State DOTs (and Others) to Encourage Shared Use Mobility Practices in Rural Areas Completed
NCHRP 20-65/Task 77Lessons Learned and Impacts to Date of State DOT Implementation of New Federal Transit Asset Management and Public Transportation Agency Safety Requirements Completed
NCHRP 20-65/Task 78 Impact of Decline in Volunteerism on Rural Transit SystemsActive
NCHRP 20-65/Task 79Program Management Insights for the 5310 Program (Including Sub-Grantee Consolidation and Urban 5310)Active
NCHRP 20-65/Task 80Capacity Building Options for DOT Transit StaffActive
NCHRP 20-65/Task 81Best Practices in Rural Service AssessmentActive
NCHRP 20-65/Task 82Issues Associated with Providing Customized, Client-Based Transportation ServicesActive
NCHRP 20-65BResearch for the AASHTO Standing Committee on Public TransportationPending
NCHRP 20-66Strategic Plan for Transportation Information ManagementCompleted
NCHRP 20-67Making Transportation Tunnels Safe and SecureCompleted
NCHRP 20-68US Domestic Scan Program -- Business PlanFinalThe Domestic Scan Program has been initiated as a continuing NCHRP activity. Refer to NCHRP 20-68A.
NCHRP 20-68(01)U.S. Domestic Scan Program PilotFinalThe Doestic Scan Program has been initiated as a continuing activity, NCHRP 20-68A.
NCHRP 20-68AUS Domestic Scan Program - Phase 1ActiveCompletion date refers to 3rd phase program, NCHRP Project 20-68D. All scans are listed on this page.
NCHRP 20-68A(02)US Domestic Scan Program - Phase 2Final
NCHRP 20-68BAccelerating the Rate of Innovation Among State DOTsFinal
NCHRP 20-68B(01)Accelerating the Rate of Innovation Among State DOTs—Tracing Domestic Scan ImpactsFinalThe initial project budget and time were extended to enable tracing of impact for additional scans.
NCHRP 20-68CResearch on Innovation Networks--Domestic ScansFinal
NCHRP 20-68DU.S. Domestic Scan Program (Phase 3)ActivePhase 3 of the program is planned for 6 years, subject to continued availability of funds and satisfactory performance.
NCHRP 20-69Guidance for Transportation Project ManagementCompleted
NCHRP 20-70Transportation Research Thesaurus ImprovementsCompleted
NCHRP 20-71Effective Experimental Design and Data Analysis in Transportation ResearchFinal
NCHRP 20-72Tools to Aid State DOTs in Responding to Workforce ChallengesFinalNCHRP supported additional work to develop a prototype web-based implementation of the toolbox.
NCHRP 20-73Accelerating Transportation Program and Project Delivery: Conception to CompletionCompleted
NCHRP 20-74Developing an Asset-Management Framework for the Interstate Highway SystemCompleted
NCHRP 20-74ADevelopment of Service Levels for the Interstate Highway SystemCompleted
NCHRP 20-75Implementing Transportation Knowledge NetworksCompletedProject completed
NCHRP 20-76Guidelines for Conducting a Disparity and Availability Study for the Federal Disadvantaged Business Enterprise Program. CompletedCompleted - final report can be purchased or downloaded at the link below.
NCHRP 20-77Transportation Operations Training FrameworkFinal
NCHRP 20-78Communicating the Value of ResearchCompleted
NCHRP 20-79Expansion of the Transportation Research ThesaurusCompletedThe project has been completed and the thesaurus has been updated with AASHTO definitions.
NCHRP 20-81Guide to Implementing Strategies to Attract and Retain a Capable Transportation Workforce Completed
NCHRP 20-82Next Generation Transportation Pooled Fund (TPF) WebsiteCompleted
NCHRP 20-83Long-Range Strategic Issues Facing the Transportation IndustryActiveFor more information, see each individual project in this series.
NCHRP 20-83(01)Economic Changes Driving Future Freight TransportationFinalPublished as NCHRP Report 750: Volume 1
NCHRP 20-83(02)Expediting Future Technologies for Enhancing Transportation System PerformanceFinal
NCHRP 20-83(03)Long-Range Strategic Issues Affecting Preservation, Maintenance, and Renewal of Highway InfrastructureCompleted
NCHRP 20-83(03)ALong-Range Strategic Issues Affecting Preservation, Maintenance, and Renewal of Highway InfrastructureCompleted
NCHRP 20-83(04)Preparing State Transportation Agencies for an Uncertain Energy FutureFinal
NCHRP 20-83(05)Climate Change and the Highway System: Impacts and Adaptation ApproachesCompletedThe final project deliverables are available as NCHRP Report 750, Volume 2.
NCHRP 20-83(06)Effects of Socio-Demographics on Travel DemandCompleted
NCHRP 20-83(07)Sustainability as an Organizing Principle for Transportation AgenciesFinal
NCHRP 20-83ALong-Range Strategic Issues Facing the Transportation Industry: December 2010 Workshop ReportFinal
NCHRP 20-83BCommunicating the Results of NCHRP Strategic Transportation Issues ResearchActive
NCHRP 20-84Improved Right-of-Way Procedures and Business PracticesCompletedCompleted. Published as NCHRP Report 771 with CRP-CD 154
NCHRP 20-85Renewable Energy Guide for Highway Maintenance FacilitiesCompletedThe Renewable Energy Guide is available as NCHRP Report 751.
NCHRP 20-86Attracting, Recruiting, and Retaining Skilled Staff for Transportation System Operations and ManagementCompleted
NCHRP 20-89Intellectual Property Management Guide for State Departments of TransportationFinal
NCHRP 20-90Improving Management of Transportation InformationFinal
NCHRP 20-92Improving Access to International Transportation Research InformationCompleted
NCHRP 20-93Development of a Guide for Transportation Technology TransferFinal
NCHRP 20-94Development of a Formalized Process for the Adoption, Development, Maintenance, and Enhancement of TransXML SchemasCompletedCompleted
NCHRP 20-95Identifying Successful Practices in the FHWA Disadvantaged Business Enterprise (DBE) ProgramCompletedProject cancelled; Resumed at NCHRP Project 20-95A
NCHRP 20-95ACompendium of Successful Practices, Strategies, and Resources in the FHWA Disadvantaged Business Enterprise (DBE) ProgramFinalPubished as NCHRP Report 913
NCHRP 20-96Leadership Guide for Strategic Information Management for State Departments of TransportationFinal
NCHRP 20-97Improving Findability and Relevance of Transportation InformationFinalNCHRP Projects 20-97 and 20-97A are included here.
NCHRP 20-98A Guide to Agency-Wide Knowledge Management for State Departments of TransportationFinal
NCHRP 20-99Completed
NCHRP 21-03Instrumentation for Measuring Scour at Bridge Piers and AbutmentsCompleted
NCHRP 21-04Sealing Geotechnical Exploratory Holes to Protect the Subsurface EnvironmentCompleted
NCHRP 21-05Determination of Unknown Subsurface Bridge FoundationsCompleted
NCHRP 21-05(2)Unknown Subsurface Bridge Foundation TestingCompleted
NCHRP 21-06Corrosion in the Soil Environment: Soil Resistivity and pH MeasurementsCompleted
NCHRP 21-07Development of Portable Scour Monitoring EquipmentCompletedNCHRP Report 515 Portable Scour Monitoring Equipment
NCHRP 21-08Assessment of Innovative Load Testing of Deep FoundationsCompletedNCHRP Web-Only Document 84 Innovative Load Testing Systems
NCHRP 21-09Intelligent Soil Compaction SystemsCompletedNCHRP Report 676 Intelligent Soil Compaction Systems
NCHRP 21-10Manual on Subsurface Investigations -- UpdateFinalThe Final Report is available as NCHRP Web-Only Document 258
NCHRP 21-11Improved Test Methods and Practices for Characterizing Steel Corrosion Potential of Earthen MaterialsCompleted
NCHRP 22-05Develop Performance Standards and Hardware for Low Service Level Guardrail SystemsCompleted
NCHRP 22-05AWarrants for the Installation of Low Service Level Guardrail SystemsCompleted
NCHRP 22-06Roadside Safety Design for Small VehiclesCompleted
NCHRP 22-07Update of "Recommended Procedures for Safety Performance Evaluation of Highway Appurtenances"Completed
NCHRP 22-08Evaluation of Performance Level Selection Criteria for Bridge RailingsCompleted
NCHRP 22-09Improved Procedures for Cost-Effectiveness Analysis of Roadside Safety FeaturesCompleted
NCHRP 22-10Updated Materials for a Traffic Barrier/Small Sign Support Hardware GuideCompleted
NCHRP 22-11Evaluation of Roadside Features to Accommodate Vans, Mini-Vans, Pickup Trucks, & 4-Wheel Drive VehiclesCompleted
NCHRP 22-12Guidelines for the Selection, Installation, and Maintenance of Highway-Safety FeaturesCompleted
NCHRP 22-12(02)Selection Criteria and Guidelines for Highway Safety FeaturesCompleted
NCHRP 22-12(03)Recommended Guidelines for the Selection of Test Levels 2 Through 5 Bridge RailsCompleted
NCHRP 22-13Performance of Roadside BarriersCompleted
NCHRP 22-13(2)Expansion and Analysis of In-Service Barrier Performance Data and Planning for Establishment of a DatabaseCompleted
NCHRP 22-14Improvement of the Procedures for the Safety-Performance Evaluation of Roadside FeaturesCompleted
NCHRP 22-14(02)Improved Procedures for Safety-Performance Evaluation of Roadside FeaturesCompleted
NCHRP 22-14(03)Evaluation of Existing Roadside Safety Hardware Using Updated CriteriaCompleted
NCHRP 22-14(04)Testing of Cable Median Barrier in a Narrow DitchCompleted
NCHRP 22-15Improving the Compatibility of Vehicles and Roadside Safety HardwareCompleted
NCHRP 22-16Development of an Improved Roadside Barrier SystemCompleted
NCHRP 22-17Recommended Guidelines for Curbs and Curb-Barrier CombinationsCompleted
NCHRP 22-18Crashworthy Work-Zone Traffic Control DevicesCompleted
NCHRP 22-19Aesthetic Concrete Barrier and Bridge Rail DesignsCompleted
NCHRP 22-20Design of Roadside Barrier Systems Placed on MSE Retaining WallsCompleted
NCHRP 22-20(02)Design Guidelines for TL-3 through TL-5 Roadside Barrier Systems Placed on Mechanically Stabilized Earth (MSE) Retaining WallsFinal
NCHRP 22-21Median Cross-Section Design for Rural Divided HighwaysFinal
NCHRP 22-22Placement of Traffic Barriers on Roadside and Median SlopesFinal
NCHRP 22-22(02)Effectiveness of Traffic Barriers on Non-Level TerrainFinal
NCHRP 22-23Criteria for Restoration of Longitudinal BarriersCompleted
NCHRP 22-24Guidelines for Verification and Validation of Crash Simulations Used in Roadside Safety ApplicationsCompleted
NCHRP 22-25Development of Guidance for the Selection, Use, and Maintenance of Cable Barrier SystemsCompleted
NCHRP 22-26Factors Related to Serious Injury and Fatal Motorcycle Crashes with Traffic BarriersCompleted
NCHRP 22-27Roadside Safety Analysis Program (RSAP) UpdateFinal
NCHRP 22-28Criteria for Restoration of Longitudinal Barriers, Phase IIFinal
NCHRP 22-29Performance of Longitudinal Barriers on Curved, Superelevated Roadway SectionsCompletedThe project was terminated due to the departure of several key staff.
NCHRP 22-29AEvaluating the Performance of Longitudinal Barriers on Curved, Superelevated Roadway SectionsCompleted
NCHRP 22-29BEvaluating the Performance of Longitudinal Barriers on Curved, Superelevated Off-RampsActive
NCHRP 22-30In-Service Performance Evaluation of W-beam End TerminalsCompletedCompleted - published as TRB Special Report 323
NCHRP 22-31Recommended Guidelines for the Selection and Placement of Test Levels 2 through 5 Median BarriersFinal
NCHRP 22-32Development of Methods to Evaluate Side Impacts for Next Edition MASHCompleted
NCHRP 22-32ADevelopment of Methods to Evaluate Side Impacts – Phase IIPending
NCHRP 22-33Multi-State In-Service Performance Evaluations of Roadside Safety HardwareFinal
NCHRP 22-34Determination of Zone of Intrusion Envelopes under MASH Impact Conditions for Barrier AttachmentsFinalResearch is complete. Final Report is published as NCHRP Report 1018
NCHRP 22-35Evaluation of Bridge Rail Systems to Confirm AASHTO MASH ComplianceFinalPublished as NCHRP Research Report 1024
NCHRP 22-36Synthesis of the Performance of Portable Concrete Barrier SystemsFinal
NCHRP 22-36(01)A Guideline for Connection Details Between Portable Concrete Barrier SegmentsFinalNCHRP canceled this project and reallocated project funds to NCHRP Program
NCHRP 22-37Development of a MASH Barrier to Shield Pedestrians, Bicyclists, and Other Vulnerable Users from Motor VehiclesActive
NCHRP 22-38Development of MASH TL-3 Deflection Reduction Guidance for 31-inch GuardrailActive
NCHRP 22-39Guardrail Performance at Various Offsets from Curb MASH TL-3 ApplicationsActive
NCHRP 22-40Investigation of Material Requirements for Highway Guardrail SpecificationsActiveOngoing. The Scope of Work was revised for the Investigation of Material Requirements for Highway High Tension Cable Barriers Specifications.
NCHRP 22-41Proposed Modification to AASHTO LRFD Bridge Design Specifications, Section 13—RailingActiveThe research team is awaiting the completion of NCHRP 12-119. Findings from NCHRP 12-119 and 22-35 will be incorporated into the recommendations for the re-write of Section 13 of the AASHTO LRFD BDS.
NCHRP 22-42Impact Performance Assessment of Barrier Performance at High SpeedsPending
NCHRP 22-43Proposed AASHTO Guidelines for Implementation of MASH for Sign Supports, Breakaway Poles, and Work Zone Traffic Control DevicesActiveThe research team is working on the testing program and has requested a no-cost contract extension for the project completion date of December 31, 2023.
NCHRP 22-44A Transportation Agency Data Collection Practice for Use with In-Service Performance Evaluations (ISPEs)Active
NCHRP 22-45Informing the Selection of Countermeasures by Evaluating, Analyzing, and Diagnosing Contributing Factors that Lead to Crashes ActiveResearch underway
NCHRP 22-46Human Factors Guidelines for Road Systems, Proposed 4th EditionActive
NCHRP 22-47Incorporating Driver Behavior and Characteristics into Safety Prediction MethodsActiveFurther work will be conducted under NCHRP 22-47A
NCHRP 22-47AIncorporating Driver Behavior and Characteristics into Safety Prediction MethodsPending
NCHRP 22-48Development of Crash Prediction Models for Short-Term DurationsActiveResearch in progress.
NCHRP 22-49The Effect of Vehicle Mix on Crash Frequency and Crash SeverityActiveResearch in progress.
NCHRP 22-50Crashworthiness of Roadside Hardware on Curbed RoadwaysPending
NCHRP 22-51Impact of Soil Stiffness on the Performance of Crash Testing and Roadside SafetyPending
NCHRP 22-52Development of a Crashworthy Tangent End Treatment for Low-Speed and Curbed RoadwaysPending
NCHRP 22-53Delineation of Linear Roadside Hardware Systems and Roadside ObstaclesActive
NCHRP 22-54MASH Hardware Evaluation with New Proposed Test VehiclesPending
NCHRP 22-55Implementation of MASH Surrogate Test Vehicles for Sign Supports, Breakaway Poles, and Work Zone Traffic Control DevicesActive
NCHRP 22-56Development of Non-proprietary Prefabricated Solutions for Concrete Barrier Systems for Accelerated Bridge ConstructionActive
NCHRP 22-57Procedures for Development of MASH Full-Scale Test Matrices for Additional Roadside Safety DevicesRFP
NCHRP 22-58National In-Service Performance Evaluation Guidelines for Defining Acceptable Roadside Safety HardwareRFP
NCHRP 22-59Safety Risks of Occupant Compartment Damage During CrashesAnticipated
NCHRP 23-01Assessing and Communicating the Economic and Quality of Life Benefits of Transportation Infrastructure InvestmentFinal
NCHRP 23-02Guidelines on Collaboration and Information Security for State DOTsFinal
NCHRP 23-03Guidelines for State Transportation Agency Chief Executive Officers on Cybersecurity Issues and Protection StrategiesCompletedResearch complete. Publication decision pending.
NCHRP 23-04Statewide Insurance Pooling for Public TransitActive
NCHRP 23-05Guidance for Training and Certification of Construction Inspectors for Transportation InfrastructureFinal
NCHRP 23-06A Guide to Computation and Use of System Level Valuation of Transportation AssetsFinal
NCHRP 23-07Effective Methods for Setting Transportation Performance TargetsCompleted
NCHRP 23-08A Guide for Incorporating Maintenance Costs into a Transportation Asset Management PlanCompleted
NCHRP 23-09Scoping Study to Develop the Basis for a Highway Standard to Conduct an All-Hazards Risk and Resilience AnalysisCompleted
NCHRP 23-10Evaluation and Synthesis of Connected Vehicle Communication TechnologiesFinal
NCHRP 23-11Transportation Emergency Management and Security Summit and ExchangeRFP
NCHRP 23-12Artificial Intelligence Opportunities for State and Local DOTs – A Research RoadmapActive
NCHRP 23-13Active
NCHRP 23-13(01)Telecommuting, Remote Work, and Hybrid Schedules: Managing the Shift to a Flexible Work Future Active
NCHRP 23-13(02)Employee Safety during COVID-19Final
NCHRP 23-13(03)Guide on Truck Rest and Service Areas for Critical Supply Chain DeliveryRFP
NCHRP 23-13(04)Scoping Supply Chain Challenges and Solutions amid COVID-19Pending
NCHRP 23-13(05)Regulatory Relief of Commercial Vehicle Weight Requirements for Emergency Transportation of Critical CommoditiesActive
NCHRP 23-13(06)Assessing the Equity and Workforce Mobility Implications of the Expansion of E-Commerce and Direct-to-Consumer Delivery ServicesActive
NCHRP 23-14Research Roadmap for Knowledge ManagementActive
NCHRP 23-15Guidance on Risks Related to Emerging and Disruptive Transportation TechnologiesActive
NCHRP 23-16Implementing and Leveraging Machine Learning at State Departments of TransportationActive
NCHRP 23-17Assessing and Measuring the Business Value of Knowledge ManagementPending
NCHRP 23-18Incorporating Knowledge Management into DOT Business PracticesFinalThis project has been combined with NCHRP 23-21 and is being conducted as NCHRP 23-17
NCHRP 23-19Practices for Transportation Agency Procurement and Management of Advanced TechnologiesActiveResearch in progress.
NCHRP 23-20Guidebook for Implementation of UAS Operational CapabilitiesActive
NCHRP 23-21Enabling Knowledge Management through Leadership Strategy and CultureFinalThis project has been combined with NCHRP 23-18 and is being conducted as NCHRP 23-17
NCHRP 23-22Alternative Project Delivery Methods: Assessing and Allocating Risk to Increase CompetitionActive
NCHRP 23-23Data Governance Design and Implementation — Links Between Governance Approaches and Performance Effects in DOTsActive
NCHRP 23-24Methods to Allow Agencies to Incorporate Quantitative Risk Assessment at Project and Network LevelPending
NCHRP 23-25Architecture for Information System for Reporting and Sharing Truck Regulatory Requirements DataPending
NCHRP 23-26Measuring Impacts and Performance of State DOT Resilience EffortsActiveResearch in progress.
NCHRP 23-27Strategies for Developing and Using Data Ontologies for Data-Driven Decision-Making Pending
NCHRP 23-28Planning for 4.9 GHz Spectrum Changes — What Transportation Agencies Need to KnowPending
NCHRP 23-29Transportation Enterprise Data Warehouse Implementation GuideRFP
NCHRP 23-30Strategies to Improve Application of Research Results in the Research Life CycleRFP
NCHRP 23-31Strategies to Foster the Implementation of Knowledge ManagementRFP
NCHRP 23-32Transportation Asset Risk and ResilienceRFP
NCHRP 23-33Managed Retreat To Address Extreme Weather, Natural Hazards, and Climate ImpactsRFP
NCHRP 24-03Laboratory Evaluation of Piles Installed with Vibratory DriversCompleted
NCHRP 24-04Load Factor Design Criteria for Highway Structure FoundationsCompleted
NCHRP 24-05Downdrag on Bitumen-Coated PilesCompleted
NCHRP 24-06Expert System for Stream Stability and Scour EvaluationCompletedNCHRP Report 426 CAESAR: An Expert System for Evaluation of Scour and Stream Stability
NCHRP 24-07Countermeasures to Protect Bridge Piers from ScourCompleted
NCHRP 24-07(2)Countermeasures to Protect Bridge Piers from ScourCompletedNCHRP Report 593 Countermeasures to Protect Bridge Piers from Scour
NCHRP 24-08Scour at Bridge Foundations: Research NeedsCompleted
NCHRP 24-09Static and Dynamic Lateral Loading of Pile GroupsCompleted
NCHRP 24-10Thermally Sprayed Metallic Coatings to Protect Steel PilingsCompleted
NCHRP 24-11Guidelines for Geofoam Applications in Embankment ProjectsCompletedNCHRP Report 529 Guideline and Recommended Standard for Geofoam Applications in Highway Embankments and Web-Only Document 65 Geofoam Applications in the Design and Construction of Highway Embankments
NCHRP 24-11(02)Guidelines for Geofoam Applications in Slope Stability ProjectsCompletedResearch Results Digest. 380: Guidelines for Geofoam Applications in Slope Stability Projects
NCHRP 24-12Controlled Low-Strength Material For Backfill, Utility Bedding, Void Fill, and Bridge ApproachesCompleted
NCHRP 24-12(01)Controlled Low-Strength Material For Backfill, Utility Bedding, Void Fill, and Bridge ApproachesCompleted
NCHRP 24-13Evaluation of Metal Tensioned Systems in Geotechnical ApplicationsCompleted
NCHRP 24-14Scour at Contracted Bridge SitesCompletedNCHRP Web-Only Document 83 Scour at Contracted Bridges
NCHRP 24-15Complex Pier Scour and Contraction Scour in Cohesive SoilsCompletedNCHRP Report 516 Pier and Contraction Scour in Cohesive Soils
NCHRP 24-15(2)Abutment Scour in Cohesive MaterialsCompletedAn unedited, completed final report for this project has been posted on the web with a link to it in the “Product Availability” section of this page. For more information see the “Status” section of this page.
NCHRP 24-16Methodology for Predicting Channel Migration CompletedNCHRP Report 533 Handbook for Predicting Stream Meander Migration.
NCHRP 24-17LRFD Deep Foundation DesignCompleted
NCHRP 24-18Countermeasures to Protect Bridge Abutments from ScourCompletedTerminated due to PI relocation.
NCHRP 24-18ACountermeasures to Protect Bridge Abutments from ScourCompletedNCHRP Report 587 Countermeasures to Protect Bridge Abutments from Scour.
NCHRP 24-19Environmentally Sensitive Channel- and Bank-Protection MeasuresCompletedNCHRP Report 544 Environmentally Sensitive Channel- and Bank-Protection Measures
NCHRP 24-20Prediction of Scour at Bridge AbutmentsCompletedAn unedited, completed final report for this project has been posted on the web with a link to it in the “Product Availability” section of this page. For more information see the “Status” section of this page.
NCHRP 24-20(02)Evaluation of Abutment-Scour Equations from NCHRP Projects 24-15(2) and 24-20 Using Field DataCompletedCompleted. An uncorrected draft, as submitted by the Contractor, is posted on line with a link in the Product Availability section at the bottom of this page.
NCHRP 24-21LRFD Soil-Nailing Design and Construction SpecificationsCompletedNCHRP Report 701: Proposed LRFD Specifications for Soil Nailing Design and Construction.
NCHRP 24-22Selecting Backfill Materials for MSE Retaining WallsCompletedCompleted. An uncorrected draft, as submitted by the Contractor, will be posted on line with a link in the product availability section at the bottom of this page.
NCHRP 24-23Riprap Design Criteria, Specifications, and Quality ControlCompletedNCHRP Report 568 Riprap Design Criteria, Recommended Specifications, and Quality Control.
NCHRP 24-24Criteria for Selecting Numeric Hydraulic Modeling SoftwareCompletedNCHRP Web-Only Document 106 Criteria for Selecting Hydraulic Models
NCHRP 24-25Guidelines for Risk-Based Management of Bridges with Unknown FoundationsCompletedNCHRP Web-Only Document 107 Risk-Based Management Guidelines for Scour at Bridges with Unknown Foundations
NCHRP 24-26Effects of Debris on Bridge-Pier ScourCompletedNCHRP Report 653: Effects of Debris on Bridge Pier Scour
NCHRP 24-27(01)Evaluation of Bridge Scour Research: Pier Scour Processes and PredictionsCompletedThe project final report is available as NCHRP Web-Only Document 175.
NCHRP 24-27(02)Evaluation of Bridge-Scour Research: Abutment and Contraction Scour Processes and Predictions CompletedThe project final report is available as NCHRP Web-Only Document 181.
NCHRP 24-27(03)Evaluation of Bridge-Scour Research: Geomorphic Processes and PredictionsCompletedThe project final report is available as NCHRP Web-Only Document 177.
NCHRP 24-28LRFD Metal Loss and Service-Life Strength Reduction Factors for Metal-Reinforced Systems in Geotechnical ApplicationsCompletedThe project final report is available as NCHRP Report 675.
NCHRP 24-29Scour at Bridge Foundations on RockCompletedNCHRP Report 717: Scour at Bridge Foundations on Rock
NCHRP 24-30Design Guidelines for Increasing the Lateral Resistance of Highway Bridge Pile Foundations by Improving Weak SoilsFinal
NCHRP 24-31LRFD Design and Construction of Shallow Foundations for Highway Bridge Structures Final
NCHRP 24-32Scour at Wide Piers and Long Skewed PiersCompleted
NCHRP 24-33Development of Design Methods for In-Stream Flow Control StructuresFinalCompleted. Published as NCHRP Report 795.
NCHRP 24-34Risk-Based Approach for Bridge Scour PredictionFinal
NCHRP 24-35Guidelines for Certification and Management of Flexible Rockfall Protection SystemsCompletedCompleted. Published as NCHRP Report 823
NCHRP 24-36Scour at the Base of Retaining Walls and Other Longitudinal StructuresFinal
NCHRP 24-37Combining Individual Scour Components to Determine Total ScourFinalFinal Research Report is available online as NCHRP Web-Only Document 249
NCHRP 24-38Development of Bridge Foundation Movement Criteria-- Phase I FinalNCHRP terminated the awarded contract; The remaining work is completed under NCHRP Project 12-103
NCHRP 24-39Evaluation and Assessment of Environmentally Sensitive Stream Bank Protection MeasuresCompletedCompleted. Published as NCHRP Report 822.
NCHRP 24-40Design Hydrology for Stream Restoration and Channel Stability at Stream CrossingsFinal
NCHRP 24-41Defining the Boundary Conditions for Composite Behavior of Geosynthetic Reinforced Soil (GRS) StructuresFinalNCHRP Web-Only Document 260 is now available.
NCHRP 24-42Underwater Installation of Filters Systems for Scour and Other Erosion Control CountermeasuresFinalThe final report will be published in August 2018
NCHRP 24-43Relationship Between Erodibility and Properties of SoilsFinalFinal Report 915 is now available.
NCHRP 24-44Guidelines for Managing Geotechnical Risks in Design-Build ProjectsFinal
NCHRP 24-45Evaluating Mechanical Properties of Earth Material During Intelligent CompactionFinalNCHRP Report 933 is now available.
NCHRP 24-46Development of an Implementation Manual for Geotechnical Asset Management for Transportation AgenciesFinalNCHRP Research Report 903 Volumes 1 and 2 available.
NCHRP 24-47Revised Clear-Water and Live-Bed Contraction Scour AnalysisFinalCompleted. Published as Research Report NCHRP 971 and WOD 294 Training Manual.
NCHRP 24-48Develop a Formula for Determining Scour Depth around Structures in Gravel-bed RiversCompletedResearch in complete. Publication decision pending.
NCHRP 24-49Guidelines for Selection and Application of Manning’s Roughness Values in Two-Dimensional Hydraulic ModelsActiveThe research team requested a no-cost contract extension with a proposed completion of 05/31/2023
NCHRP 24-50Rewrite of the AASHTO Drainage ManualActive
NCHRP 24-51Effects of Construction Installation Methods on the Design and Performance of Drilled Shaft FoundationsPending
NCHRP 25-02Predicting Stop-and-Go Traffic Noise LevelsCompleted
NCHRP 25-03Guidelines for the Development of Wetland Replacement AreasCompleted
NCHRP 25-04Determining Economic Impacts on Adjacent Businesses Due to Restricting Left TurnsCompleted
NCHRP 25-05Remote Sensing and Other Technologies for the Identification and Classification of WetlandsCompleted
NCHRP 25-06Intersection Air Quality ModelingCompleted
NCHRP 25-07Improving Transportation Data for Mobile Source Emissions EstimatesCompleted
NCHRP 25-08Impact of Highway Capacity Improvements on Air Quality and Energy ConsumptionCompleted
NCHRP 25-09Environmental Impact of Construction and Repair Materials on Surface and Ground WatersCompleted
NCHRP 25-09(01)Environmental Impact of Construction and Repair Materials on Surface and Ground Waters -- Outreach and TrainingCompleted
NCHRP 25-10Estimating the Indirect Effects of Proposed Transportation ProjectsCompleted
NCHRP 25-10(2)Desk Reference for Estimating the Indirect Effects of Proposed Transportation ProjectsCompleted
NCHRP 25-11Development of a Modal-Emissions ModelCompleted
NCHRP 25-12Wet Detention Pond Design for Highway Runoff Pollution ControlCompletedReport not published.
NCHRP 25-13 and 25-13(2)Assessments of Impacts of Bridge Deck Runoff Contaminants on Receiving WatersCompleted
NCHRP 25-14Heavy-Duty Vehicle EmissionsCompleted
NCHRP 25-15Short-Term Monitoring for Compliance with Air Quality StandardsFinalCompleted and published as NCHRP Report 479
NCHRP 25-16Guidance for Selecting Compensatory Wetland Mitigation OptionsCompleted
NCHRP 25-17Transportation Effects of the 1997 Changes to the National Ambient Air Quality Standards FinalCompleted --- Agency report available on request
NCHRP 25-18Particulate-Matter (PM2.5 and PM10) Apportionment for On-Road Mobile SourcesFinal
NCHRP 25-19Evaluation of Methods, Tools, and Techniques to Assess the Social and Economic Effects of Transportation ProjectsCompleted
NCHRP 25-20Management of Runoff from Surface Transportation Facilities--Synthesis and Research PlanCompleted
NCHRP 25-20(01)Evaluation of Best Management Practices for Highway Runoff ControlCompleted
NCHRP 25-20(02)Identification of Research Needs Related to Highway Runoff ManagementCompleted
NCHRP 25-21Predicting Short-Term and Long-Term Air Quality Effects of Traffic-Flow Improvement ProjectsFinal
NCHRP 25-22Technologies to Improve Consideration of Environmental Concerns in Transportation DecisionsCompletedReport available as CRP-CD-14
NCHRP 25-22(02)Technologies to Improve Consideration of Environmental Concerns in Transportation DecisionsFinal
NCHRP 25-23Environmental Information Management and Decision Support System for TransportationCompleted
NCHRP 25-23(2)Software for an Environmental Information Management and Decision Support SystemCompleted
NCHRP 25-24Monitoring, Analyzing, and Reporting on the Environmental Streamlining Pilot ProjectsFinal
NCHRP 25-25Research for the AASHTO Committee on Environment and SustainabilityFinal
NCHRP 25-25/Task 001Synthesis on Data Needs for EA and EIS DocumentationCompleted
NCHRP 25-25/Task 002Transportation Impacts and 'Smart Growth' InitiativesCompleted
NCHRP 25-25/Task 003Assessment and Mitigation Strategies for Land Development Impacts of Transportation ImprovementsCompleted
NCHRP 25-25/Task 004Environmental Stewardship Practices, Policies, and Procedures for Road Construction and Maintenance Completed
NCHRP 25-25/Task 005Assessing the Current State of the NEPA Environmental Review ProcessCompleted
NCHRP 25-25/Task 006Preparing State DOTs for Implementation of the 8-hour Ozone and PM2.5 StandardsCompleted
NCHRP 25-25/Task 007Evaluation of Mobile Models: MOBILE 6.1, MOBILE 6.2 and MOBILE6/CNGCompleted
NCHRP 25-25/Task 008Developing Performance Data Collection Protocol for Stream RestorationCompleted
NCHRP 25-25/Task 009Use of Existing Data in Decision MakingCompletedCancelled
NCHRP 25-25/Task 010Alternative Mitigation Strategies/Early Mitigation: Streamlining and Achieving Net Benefits for the Natural EnvironmentCompleted
NCHRP 25-25/Task 011Secondary/Indirect and Cumulative Effects AnalysisCompleted
NCHRP 25-25/Task 012Design-Build Environmental Compliance Process and Level of Detail RequiredCompleted
NCHRP 25-25/Task 013Agency Use and Approach to FHWA Approved Programmatic AgreementsCompleted
NCHRP 25-25/Task 014A Summary of Existing Research on Dam Removal ProjectsCompleted
NCHRP 25-25/Task 015Historic BridgesCompleted
NCHRP 25-25/Task 016State Transportation Agency Strategies to Address NPDES Phase II RequirementsCompleted
NCHRP 25-25/Task 017Assessment of Greenhouse Gas Analysis Techniques for Transportation ProjectsCompleted
NCHRP 25-25/Task 018Recommended Approaches to Communicating Air Toxics Issues and Transportation Project-Related Analyses in NEPA DocumentsCompleted
NCHRP 25-25/Task 019Historic Bridge Rehabilitation / Replacement Decision MakingCompleted
NCHRP 25-25/Task 020The Role of State DOTs in Support of Transit Oriented Development (TOD)Completed
NCHRP 25-25/Task 021Assessment of Geophysical Remote Sensing Opportunities at State Departments of Transportation for Incorporation into Archaeological InvestigationsCompleted
NCHRP 25-25/Task 022Land Use Forecasting for Indirect Impacts AnalysisCompleted
NCHRP 25-25/Task 023Environmental performance measurements related to transportation project planning, design, construction, maintenance and operationsCompleted
NCHRP 25-25/Task 024Climate Change and U.S. TransportationCompleted
NCHRP 25-25/Task 025Modification and Amendment of Environmental Permits on Design-Build ProjectsCompleted
NCHRP 25-25/Task 026Integration of Charrette Processes into Project PlanningFinalCancelled
NCHRP 25-25/Task 027Project Management and NEPACompletedCompleted
NCHRP 25-25/Task 028Reevaluations of NEPA documentsCompleted
NCHRP 25-25/Task 029Best Practices Library from the Environmental Stewardship Practices in Construction and Maintenance CompendiumCompleted
NCHRP 25-25/Task 030Section 404 Permitting and Roadside Ditches as Jurisdictional WatersCompletedCancelled
NCHRP 25-25/Task 031Cost Effective Tools for Achieving PM 2.5 Transportation Air Quality ConformityCompletedCancelled
NCHRP 25-25/Task 032Linking Environmental Resource and Transportation Planning – The Current State of PracticeFinalThis project is completed and results are available at the links below.
NCHRP 25-25/Task 033National Register of Historic Places EligibilityCompleted
NCHRP 25-25/Task 034Streamlined Carbon Monoxide Hot Spot Screening / Modeling ToolCompletedCancelled
NCHRP 25-25/Task 035Water Quality Analyses for NEPA Documents: Selecting Appropriate MethodologiesCompletedCompleted
NCHRP 25-25/Task 036Recurring Community ImpactsFinalThe final report has been submitted to AASHTO
NCHRP 25-25/Task 037Effective Organizational Structures and Management Practices for Achieving Environmental Stewardship in Transportation AgenciesFinalFinal Report sent to AASHTO.
NCHRP 25-25/Task 038Guide to Use of Tier I Environmental Impact Statements for Transportation ProjectsCompletedThe draft final report has been accepted and distributed to AASHTO.
NCHRP 25-25/Task 039Improving Project Environmental Cost EstimatesFinalThe project is completed and the final report has been submitted to AASHTO.
NCHRP 25-25/Task 040New Noise Barrier Products & Noise Barrier Approval Research & GuidelinesCompletedCompleted.
NCHRP 25-25/Task 041Implementation of Community & Cultural Resource CommitmentsFinalThis project is completed and the final report has been submitted to AASHTO.
NCHRP 25-25/Task 042Determine alternative calculations for fine particulate emission factors other than AP-42 applicable to calculate re-entrained dust on transportation projectsFinalThe project has been completed and the final report submitted to AASHTO
NCHRP 25-25/Task 043Guidance on legal sufficiency criteria for adequate cumulative and secondary impacts analysis in EIS documentsFinalThe project has been completed and the final report submitted to AASHTO
NCHRP 25-25/Task 044Development and Implementation of a Transportation and Climate Change ClearinghouseFinalThe clearinhouse has been completed and transferred to the U.S. DOT.
NCHRP 25-25/Task 045Transportation Program Responses to Greenhouse Gas (GHG) Reduction Initiatives and Energy Reduction ProgramsFinalThe project has been completed and the final report submitted to AASHTO
NCHRP 25-25/Task 046Compendium of Best Practices for Environmental Compliance and Stewardship at Transportation Maintenance FacilitiesFinalThe project has been completed and the final report submitted to AASHTO
NCHRP 25-25/Task 047Compendium of Best Practices for Incorporating Environmental Commitments into Transportation Project Construction Contract DocumentsFinalThe project has been completed and the final report submitted to AASHTO.
NCHRP 25-25/Task 048Compendium of Environmental Fieldwork Technologies FinalThe project has been completed and the final report submitted to AASHTO
NCHRP 25-25/Task 049Effective Practices for Considering Historic Preservation in Transportation Planning and Early Project DevelopmentFinalCompleted and final report sent to AASHTO SCOE.
NCHRP 25-25/Task 050Finding the Carrot Instead of the Stick - Incentive-based Approaches for Environmental Compliance FinalThe project has been completed and the final report submitted to AASHTO
NCHRP 25-25/Task 051Asset Management of Environmental Mitigation FeaturesFinalThe project has been completed and the final report submitted to AASHTO.
NCHRP 25-25/Task 052Informational Requirements for Jurisdictional Determinations to be Issued by the Army Corps of Engineers (Corps) Under the Clean Water Act (CWA) FinalThe project has been completed and the final report submitted to AASHTO.
NCHRP 25-25/Task 053Stormwater Treatment with Vegetated BuffersFinalThe project has been completed and the final report submitted to AASHTO.
NCHRP 25-25/Task 054Evaluate Colorado's Area-wide Cumulative Effects Assessment (ACEA) Methodology as a Mechanism for Cumulative Impacts Analysis of Regional Transportation PlansFinalThe project has been completed and the final report submitted to AASHTO.
NCHRP 25-25/Task 055Design, Organize and Implement a Training Program for Mainstreaming Environmental Stewardship and Enhancement Activities into Planning and Project DevelopmentFinalThe project has been completed and the final report submitted to AASHTO.
NCHRP 25-25/Task 056Cost and Benefit of Transportation Specific MS4 and Construction PermittingFinalFinal report submitted to AASHTO SCOE
NCHRP 25-25/Task 057Integrated State and Local Government Policy Approaches to Transportation and ClimateFinalCompleted - Final Report sent to AASHTO
NCHRP 25-25/Task 058Methods to Address Greenhouse Gas Emissions from Transportation Construction/Maintenance/Operations ActivitiesFinalCompleted and submitted to AASHTO SCOE
NCHRP 25-25/Task 059Evaluate the Interactions between Transportation-Related Particulate Matter, Ozone, Air Toxics, Climate Change, and Other Air Pollutant Control StrategiesFinalFinal Report submitted to AASHTO SCOE.
NCHRP 25-25/Task 060Increased Use of Environmentally Preferable, Non-Toxic Products to Reduce Costs, Liabilities, and Pollution at DOT Offices, Maintenance Facilities and Rest StopsFinalFinal Report submitted to AASHTO.
NCHRP 25-25/Task 061Best Practices for Establishing and Maintaining Statewide Cultural Resource Databases at State DOTsFinalFinal Report submitted to AASHTO SCOE
NCHRP 25-25/Task 062Improving the Effectiveness of Outreach to Traditional and Non-Traditional Groups by Integrating the Expertise of Existing and Emerging Citizen Coalitions into Transportation Analysis and Decision MakingFinalFinal Report submitted to AASHTO SCOE
NCHRP 25-25/Task 063Transportation Corridor Environmental Management FrameworkFinalThe project has been completed and the final report submitted to AASHTO
NCHRP 25-25/Task 064Feasibility Study of Using Solar or Wind Power for Transportation InfrastructureFinalCompleted. Final Report Submitted to AASHTO SCOE.
NCHRP 25-25/Task 065Synthesis of Greenhouse Gas Emission Inventory Methodologies for State Transportation DepartmentsFinalCompleted. Final report submitted to AASHTO.
NCHRP 25-25/Task 066Best Practices and Lessons Learned on the Preservation and Rehabilitation of Historic BridgesCompletedFinal report delivered to AASHTO SCOE
NCHRP 25-25/Task 067Optimizing Conservation and Improving Mitigation Cost/BenefitFinalCompleted. Final Report submitted to AASHTO SCOE
NCHRP 25-25/Task 068Implementing Measures to Reduce Highway Impacts on Habitat FragmentationFinalCompleted and Final report submmited to AASHTO SCOE
NCHRP 25-25/Task 069Identification of Tools and Techniques to Define Community Context as Part of the Transportation Project Planning and Development ProcessCompletedFinal Report submitted to AASHTO SCOE
NCHRP 25-25/Task 070Assessment of Quantitative Mobile Source Air Toxics in Environmental DocumentsCompletedCompleted and report submitted to AASHTO SCOE
NCHRP 25-25/Task 071Templates for Project-Level Analyses Using MOVES and AERMODCompletedCompleted and report submitted to AASHTO SCOE
NCHRP 25-25/Task 072Current Practices to Address Construction Vibration and Potential Effects to Historic Buildings Adjacent to Transportation ProjectsCompletedCompleted and report submitted to AASHTO SCOE
NCHRP 25-25/Task 073Improved Environmental Performance of Highway MaintenanceCompletedCompleted and final report submitted to AASHTO SCOE
NCHRP 25-25/Task 074Meeting the New EPA Effluent Limitations Guideline for Construction Site Discharge Turbidity: Effectiveness of Different Turbidity Control Systems and Monitoring MethodsCompletedCompleted and submitted to AASHTO SCOE
NCHRP 25-25/Task 075Nationwide Evaluation of Transfer of Compensatory Wetland Creation Sites for Transportation Projects to Private Conservation Organizations or Government Conservation AgenciesCompletedCompleted. Report Submitted to AASHTO SCOE
NCHRP 25-25/Task 076Synthesis of Climate Change and Transportation Research Efforts at State DOTs, State Universities, and the Federal LevelFinalCompleted. Final Report submitted to AASHTO SCOE.
NCHRP 25-25/Task 077Strategic Options of Inventorying and Updating Environmental Guidance and LinksCompletedCompleted and final report submitted to AASHTO SCOE
NCHRP 25-25/Task 078Programmatic Agreements for Project-Level AirQuality Analyses Using MOVES, CAL3QHC/R and AERMODCompletedCompleted--final deliverables available for AASHTO use
NCHRP 25-25/Task 079Successful Practices for Effective Tribal ConsultationCompletedCompleted and report submitted to AASHTO SCOE
NCHRP 25-25/Task 080Potential Use of Social Media Impact in the NEPA ProcessCompletedReport completed and submitted to AASHTO SCOE
NCHRP 25-25/Task 081Federal Compliance for Projects Utilizing Alternative Funding StrategiesCompletedCompleted and report submitted to AASHTO SCOE
NCHRP 25-25/Task 082Permeable Shoulders with Stone ReservoirsCompletedCompleted and report submitted to AASHTO SCOE
NCHRP 25-25/Task 083Current Practice of Post- Construction Structural Stormwater ControlCompletedCompleted and final report submitted to AASHTO SCOE
NCHRP 25-25/Task 084Development of Construction Guidelines for Wildlife Fencing and Associated Escape and Lateral Access Control MeasuresCompletedFinal deliverable available for AASHTO use
NCHRP 25-25/Task 085Nutrient (Nitrogen/Phosphorous) Management and Source ControlCompletedFinal deliverables available for AASHTO use
NCHRP 25-25/Task 086Toxicological Effects of Chloride Based Deicers in the Natural EnvironmentCompletedCompleted
NCHRP 25-25/Task 087Coordination of Section 106 and Long Range Transportation PlanningCompletedFinal deliverables available for AASHTO use
NCHRP 25-25/Task 088Giving Away the Bridge: A National Synthesis of on Transferring Ownership of Historic BridgesCompletedFinal deliverables available for AASHTO use
NCHRP 25-25/Task 089Establishing Representative Background Concentrations for Quantitative Hot-spot Analyses for Particulate MatterCompletedFinal deliverables available for AASHTO use
NCHRP 25-25/Task 090Application of Geographic Information Systems (GIS) for Historic PropertiesFinal
NCHRP 25-25/Task 091Synthesis of Transportation Exclusions to Section 106 ReviewCompletedFinal deliverables available for AASHTO use
NCHRP 25-25/Task 092Transferability of Post-Construction Stormwater Quality BMP Effectiveness StudiesCompletedCompleted--Final deliverables available for AASHTO use
NCHRP 25-25/Task 093Long-Term Construction and Maintenance Cost Comparison for Road Stream Crossing Hydraulic Design vs. Bankfull Width DesignFinal
NCHRP 25-25/Task 094Integrating Climate Change and Extreme Weather Into Transportation Asset Management PlansFinal
NCHRP 25-25/Task 095SCOE Strategic Plan and Research Plan for SCOE Areas of InterestCompletedCompleted--Final deliverable available for AASHTO use
NCHRP 25-25/Task 096Quick Reference Guide for Traffic Modelers for Generating Traffic and Activity Data for Project-Level Air Quality AnalysesFinal
NCHRP 25-25/Task 097Historic Roads: A Synthesis of Identification and Evaluation Practices Final
NCHRP 25-25/Task 098Practical Guide for Developing Effective Scopes of Work for the Geophysical Investigation of Cemeteries Final
NCHRP 25-25/Task 099Lessons Learned from State DOT NEPA AssumptionFinal
NCHRP 25-25/Task 100Compilation of Existing Data on Northern Long-Eared and Other Cave-Dwelling Bat Habitat and the Roadside EnvironmentFinalProject cancelled
NCHRP 25-25/Task 101Stormwater Monitoring Program Goals, Objectives and Protocols for State Departments of TransportationFinal
NCHRP 25-25/Task 102Artificial Bat Roost Mitigation Designs and Standardized Monitoring CriteriaFinal
NCHRP 25-25/Task 103Administration of Categorical Exclusions by State Departments of Transportation under NEPAFinal
NCHRP 25-25/Task 104Streamlining Carbon Monoxide Project-Level Air Quality Analyses with Programmatic AgreementsFinal
NCHRP 25-25/Task 105A Guidebook for Communications between Transportation and Public Health CommunitiesFinal
NCHRP 25-25/Task 106Highway Noise and Historic Properties: A National Review of Effects and Mitigation PracticesFinal
NCHRP 25-25/Task 107Section 106 Delegation Programmatic Agreements: Review and Best PracticesFinal
NCHRP 25-25/Task 108Creating Lookup Tables to Streamline the Determination of Emission Reductions for CMAQ Projects Final
NCHRP 25-25/Task 109Successful Practices for Environmental Commitments in Public/Private Partnerships (P-3) and Design-Build (D-B) ContractsFinal
NCHRP 25-25/Task 110Review of Historic Property Identification Surveys and Strategies for Managing Post-World War II Housing in Transportation ProjectsFinal
NCHRP 25-25/Task 111Environmental Management System Perspectives For State DOTsFinal
NCHRP 25-25/Task 112Enhancing the International Stormwater BMP Database to Serve as a Highway Specific BMP DatabaseFinalCancelled.
NCHRP 25-25/Task 113Road Passages and Barriers for Small Terrestrial Wildlife: Summary and Repository of Design ExamplesFinal
NCHRP 25-25/Task 114Integrating Tribal Expertise into Processes to Identify, Evaluate, and Record Cultural ResourcesFinal
NCHRP 25-25/Task 115Estimates of Emissions Reductions from Future Fleet Changes for Use in Air Quality ModelsFinal
NCHRP 25-25/Task 116Potential Section 106 Exempted Categories or Program Comments for Federal Highway Administration Projects: National Streamlining OpportunitiesFinal
NCHRP 25-25/Task 117Valuing Wildlife Crossing Enhancements for Mitigation CreditsFinal
NCHRP 25-25/Task 118Context-Sensitive Design Options for Workhorse Bridges in Rural Historic DistrictsFinal
NCHRP 25-25/Task 119Enhancing the International Stormwater BMP Database to Serve as a Highway Specific BMP DatabaseFinal
NCHRP 25-25/Task 120Use of the State Department of Transportation Portal to the International Stormwater BMP DatabaseFinal
NCHRP 25-25BResearch for the AASHTO Standing Committee on the EnvironmentActive
NCHRP 25-27Evaluation of the Use and Effectiveness of Wildlife CrossingsCompleted
NCHRP 25-28Predicting and Mitigating Hydroacoustic Impacts on Fish from Pile InstallationCompletedThe final report has been published as Research Results Digest 363.
NCHRP 25-29Developing Design and Management Guidelines for Historic Road CorridorsCompleted
NCHRP 25-29AGuidelines for Design and Management of Historic RoadsCompletedThe project final report is available as NCHRP Web-Only Document 189.
NCHRP 25-30Temporary Bridging to Avoid or Minimize Impacts to Waters and Wetlands During Highway ConstructionFinalThe results of this study have been published in NCHRP Research Results Digest 330 .
NCHRP 25-31Guidelines for Evaluating and Selecting Modifications to Existing Roadway Drainage Infrastructure to Improve Water Quality in Ultra-Urban AreasCompleted
NCHRP 25-32Measuring and Removing Dissolved Metals from Storm Water in Highly Urbanized AreasCompletedResearch completed; to be published as NCHRP report 767
NCHRP 25-33Evaluating Methodologies for Visual Impact AssessmentsFinalFinal report published as Report 741
NCHRP 25-34Supplemental Guidance on the Application of FHWA's Traffic Noise Model (TNM)Final
NCHRP 25-35Guidebook for Designing and Managing Rights-of-Way for Carbon Sequestration and Biomass Generation CompletedCompleted. Published as NCHRP Report 804 with CRP-CD-165
NCHRP 25-36Impacts of Land Use Strategies on Travel Behavior in Small Communities and Rural AreasFinalAgency's Handbook is available as NCHRP Web-only Document 211
NCHRP 25-37A Watershed Approach to Mitigating Stormwater ImpactsFinal
NCHRP 25-38Input Guidelines for Motor Vehicle Emissions Simulator ModelFinalFinal deliverables are available as individual volumes of NCHRP Web-only Document 210
NCHRP 25-39Environmental Performance Measures for State Departments of TransportationFinal
NCHRP 25-40Long-Term Performance and Life-Cycle Costs of Stormwater Best Management PracticesCompletedFinal report published as NCHRP Report 792.
NCHRP 25-41Guidance for Achieving Volume Reduction of Highway Runoff in Urban AreasCompleted
NCHRP 25-42Bridge Stormwater Runoff Analysis and Treatment OptionsFinal
NCHRP 25-43Navigating Multi-Agency NEPA Processes to Advance Multimodal Transportation ProjectsFinal
NCHRP 25-44Field Evaluation of Reflected Noise from a Single Noise BarrierFinal
NCHRP 25-45Mapping Heavy Vehicle Noise Source Heights for Highway Noise AnalysisCompleted
NCHRP 25-46Deploying Clean Truck Freight StrategiesFinalPublished as NCHRP Report 862
NCHRP 25-47How to Measure and Communicate the Value of Access ManagementCompletedPublication pending as NCHRP Research Report 1032 and NCHRP Web Only Document 339.
NCHRP 25-48Combined Interface for Project Level Air Quality Analysis Final
NCHRP 25-49Development of a Highway Construction Noise Prediction ModelFinalComplete. Final report available on project webpage and FHWA website.
NCHRP 25-50Prioritization Procedure for Proposed Road-Rail Grade Separation Projects along Specific Rail CorridorsFinalPublished as NCHRP Report 901
NCHRP 25-51Limitations of the Infiltration Approach to Stormwater Management in the Highway EnvironmentFinalPublished as NCHRP Research Report 922
NCHRP 25-52Meteorological Effects on Roadway NoiseFinal
NCHRP 25-53Approaches for Determining and Complying with TMDL Requirements Related to Roadway Stormwater Runoff Final
NCHRP 25-54Field Testing of BMPs Using Granulated Ferric Oxide Media to Remove Dissolved Metals in Roadway Stormwater RunoffFinal
NCHRP 25-55Assessment of Regulatory Air Pollution Dispersion Models to Quantify the Impacts of Transportation Sector EmissionsCompletedFinal deliverables pending.
NCHRP 25-56Methods for State DOTs to Reduce Greenhouse Gas Emissions from the Transportation SectorFinal
NCHRP 25-57Breaking Barriers: Alternative Approaches to Avoiding and Reducing Highway Traffic Noise ImpactsFinal
NCHRP 25-58Commercial Properties from 1945 to 1980: Guidance for State DOTs and Their Partners for Historic Context Development, Identification, and EvaluationFinalProject cancelled.
NCHRP 25-59Pollinator Habitat Conservation Along RoadwaysCompletedFinal deliverables pending.
NCHRP 25-60Watershed Approach to Mitigating Hydrologic Impacts of Transportation ProjectsFinal
NCHRP 25-61Development of On-Bridge Stormwater Treatment PracticesActive
NCHRP 25-62Improving the Efficiency and Consistency of Section 106 Compliance for State DOTs: Strategies for Project-Level Programmatic Agreements and Postwar Commercial Properties Active
NCHRP 25-63Handbook on Deterring and Excluding Bats from Transportation StructuresActive
NCHRP 25-64Considering Greenhouse Gas Emissions and Climate Change in Environmental Reviews: Resources for State DOTsActive
NCHRP 25-65Preparing Successful No-Effect and No-Adverse-Effect Section 106 Determinations: A Handbook for Transportation Cultural Resource PractitionersActive
NCHRP 25-66Reviewing the REMEL Noise Database to Accommodate the Current Vehicle FleetRFP
NCHRP 25-67Guide to Mitigation of Adverse Effects on Cultural ResourcesRFP
NCHRP 25-68Documenting and Verifying Environmental CommitmentsRFP
NCHRP 70-01Private-Sector Provision of Congestion DataCompleted