Highway agencies often install safety countermeasures, such as pedestrian and bicycle railings, highway signage, high-protective screening fences, luminaire poles, etc., to the top or backside faces of crash-tested traffic barriers. These features may alter safety performance of the barrier systems. Thus, the Zone-of-Intrusion (ZOI) concept was developed to address this issue. ZOI represents the locations above and behind a barrier system that various vehicle components may occupy during an impact event. ZOI envelopes provide guidance for placement of roadside hardware appurtenances above or beyond the face of the barrier.
Current ZOI guidance within the 4th Edition of the AASHTO Roadside Design Guide was developed based on NCHRP Report 350, Recommended Procedures for the Safety Performance Evaluation of Highway Features, TL-2, TL-3, and TL-4 testing. However, AASHTO and FHWA recently agreed to implement the Second Edition of the Manual for Assessing Safety Hardware (MASH) crash testing standard, which utilizes different standardized vehicles, and may significantly change the barrier ZOI. Specifically, the MASH pickup truck, utilized in TL-2 and TL-3 evaluations, has an increased weight and a higher center-of-gravity than the pickup truck used in NCHRP Report 350. Additionally, MASH increased the weight of the single unit truck by 25 percent and increased the impact speed for TL-4 impacts. The increases in weight and impact angle for MASH test 4-12 have also led to an increase in the minimum height to 36 in. for TL-4 barriers.
It is expected that the ZOI envelopes for these vehicles may change under the Second Edition, MASH criteria. Also, differences in barrier shape and height may affect the shape of ZOI envelopes. Therefore, a need exists to develop ZOI guidance for MASH barriers.
The objective of this research is to: (1) develop ZOI envelopes for a variety of rigid barriers under MASH criteria; and (2) develop guidance for state transportation agency practitioners along with documentation intended for inclusion in the AASHTO Roadside Design Guide.
The NCHRP is seeking the insights of proposers on how best to achieve the research objective. Proposers are expected to describe research plans that can realistically be accomplished within the constraints of available funds and contract time. Proposals must present the proposers' current thinking in sufficient detail to demonstrate their understanding of the issues and the soundness of their approach to meeting the research objective.
The research plan should: (1) include a kick-off teleconference with the research team and NCHRP convened within 1 month of the contract’s execution; (2) address the manner in which the proposer intends to satisfy the project objective; (3) be divided logically into detailed tasks that are necessary to fulfill the research objective and include appropriate milestones and interim deliverables; (4) incorporate opportunities for the project panel to review, comment, and approve milestone deliverables including one face-to-face meeting with the panel; (5) coordination with AASHTO Technical Committee on Roadside Safety (TCRS) via NCHRP-hosted WebEx teleconference to provide opportunities for feedback.
TRB will cover the costs associated meetings at TRB facilities, teleconference services, and any approved panel travel.
Consider at a minimum inclusion of the following for MASH TL-2, TL-3, and TL-4:
1. Identify the barrier height thresholds for each test level;
2. For these thresholds, determine the relationship between barrier heights and ZOI;
3. Evaluate rigid barrier shapes including: (a) New Jersey Shape; (b) F-Shape; (c) Single Slope; (d) Vertical shaped barriers; and (e) low profile barriers; and
4. Validate the data (e.g., based on in-service performance, crash tests etc.).
Deliverables should include at a minimum:
1. Documentation intended for inclusion in the AASHTO Roadside Design Guide;
2. Prioritized recommendations for similar future research;
3. A final report documenting the entire research effort including methodology for determining and reporting the ZOI;
4. An executive summary of the project;
5. A PowerPoint-style presentation describing the background, objectives, research approach, findings, and conclusions;
6. A stand-alone technical memorandum titled “Implementation of Research Findings and Products” (see Special Note D for additional information); and
7. Recommendations for practitioner outreach, education, and assimilation into existing manuals.
The contractor is expected to make presentations at no more than two AASHTO/committee meetings and incorporate related travel expenses in the budget.
Proposers may recommend additional deliverables to support the project objective.
A. Item 4 of the proposal, the Research Plan, shall not exceed 25 pages, in 12-point font or larger. Item 5 of the proposal shall be limited to 1 page of biographical information for each person.
B. Proposals should include a task-by-task breakdown of labor hours for each staff member as shown in Figure 4 in the brochure, "Information and Instructions for Preparing Proposals" (http://onlinepubs.trb.org/onlinepubs/crp/docs/ProposalPrep.pdf). Proposals also should include a breakdown of all costs (e.g., wages, indirect costs, travel, materials, and total) for each task using Figures 5 and 6 in the brochure. Please note that TRB Cooperative Research Program subawards (selected proposers are considered subawards to the National Academy of Sciences, the parent organization of TRB) must comply with 2 CFR 200 – Uniform Administrative Requirements, Cost Principles, and Audit Requirements for Federal Awards. These requirements include a provision that proposers without a "federally" Negotiated Indirect Costs Rate Agreement (NICRA) shall be subject to a maximum allowable indirect rate of 10% of Modified Total Direct Costs. Modified Total Direct Costs include all salaries and wages, applicable fringe benefits, materials and supplies, services, travel, and up to the first $25,000 of each lower-tier subaward and subcontract. Modified Total Direct Costs exclude equipment, capital expenditures, charges for patient care, rental costs, tuition remission, scholarships and fellowships, participant support costs and the portion of each lower-tier subaward and subcontract in excess of $25,000.
C. NCHRP wishes to award the contract for NCHRP Project 22-34 for a fixed price of $400,000. This amount will not be subject to any adjustment by reason of the contractor’s cost experience in the performance of the contract. In addition to providing a detailed budget, the proposer should provide a proposed schedule of project milestones, deliverables and progress payments tied to the detailed budget and schedule which will be inclusive of specific dates. For budgeting purposes, proposers should assume that (1) NCHRP will provide access to web-enabled teleconference services and (2) 1 in-person meeting with the NCHRP project panel will be held in Washington, DC. NCHRP will pay panel members’ travel costs for the meeting.
D. The NCHRP is a practical, applied research program that produces implementable products addressing problems faced by transportation practitioners and managers. The benefits of NCHRP research are realized only when the results are implemented in state DOTs and other agencies. Implementation of the research product must be considered throughout the process, from problem statement development to research contract and beyond completion of the research. Item 4(c), "Anticipated Research Results," must include the following: (a) the "product" expected from the research, (b) the audience or "market" for this product, (c) a realistic assessment of impediments to successful implementation, and (d) the institutions and individuals who might take leadership in deploying the research product. The project panel will develop and maintain an implementation plan throughout the life of the project. The research team will be expected to provide input to an implementation team consisting of panel members, AASHTO committee members, the NCHRP Implementation Coordinator, and others in order to meet the goals of NCHRP Active Implementation: Moving Research into Practice, available at http://onlinepubs.trb.org/onlinepubs/nchrp/docs/NCHRP_ActiveImplementation.pdf.
E. Item 5 in the proposal, "Qualifications of the Research Team," must include a section labeled "Disclosure." Information relevant to the NCHRP's need to ensure objectivity and to be aware of possible sources of significant financial or organizational conflict of interest in conducting the research must be presented in this section of the proposal. For example, under certain conditions, ownership of the proposing agency, other organizational relationships, or proprietary rights and interests could be perceived as jeopardizing an objective approach to the research effort, and proposers are asked to disclose any such circumstances and to explain how they will be accounted for in this study. If there are no issues related to objectivity, this should be stated.
F. Proposals are evaluated by the NCHRP staff and project panels consisting of individuals collectively very knowledgeable in the problem area. Selection of an agency is made by the project panel considering the following factors: (1) the proposer's demonstrated understanding of the problem; (2) the merit of the proposed research approach and experiment design; (3) the experience, qualifications, and objectivity of the research team in the same or closely related problem area; (4) the plan for ensuring application of results; (5) the proposer's plan for participation by Disadvantaged Business Enterprises--small firms owned and controlled by minorities or women; and (6) the adequacy of the facilities.
Note: The proposer's plan for participation by Disadvantaged Business Enterprises should be incorporated in Item 12 of the proposal.
G. Copyrights - All data, written materials, computer software, graphic and photographic images, and other information prepared under the contract and the copyrights therein shall be owned by the National Academies of Sciences, Engineering, and Medicine. The contractor and subcontractors will be able to publish this material for non-commercial purposes, for internal use, or to further academic research or studies with permission from TRB Cooperative Research Programs. The contractor and subcontractors will not be allowed to sell the project material without prior approval by the National Academies of Sciences, Engineering, and Medicine. By signing a contract with the National Academy of Sciences, contractors accept legal responsibility for any copyright infringement that may exist in work done for TRB. Contractors are therefore responsible for obtaining all necessary permissions for use of copyrighted material in TRB's Cooperative Research Programs publications. For guidance on TRB's policies on using copyrighted material please consult Section 5.4, "Use of Copyrighted Material," in the Procedural Manual for Contractors.
H. The following NCHRP research project, related to this proposed effort, is currently underway:
1. NCHRP Project 15-65, "Development of Safety Performance-Based Guidelines for the Roadside Design Guide (RDG)"
Proposers are encouraged to become familiar with this effort and to take its scope of work and anticipated results into account when developing the proposed research plan. Information on this initiative may be found through the following link: http://apps.trb.org/cmsfeed/trbnetprojectdisplay.asp?projectid=4198