Project snapshot. More details below.
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Products
(Project Number)
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Impact on Practice
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Product Status
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INCORPORATING RELIABILITY PERFORMANCE MEASURES INTO THE TRANSPORTATION PLANNING AND PROGRAMMING PROCESSES (L05)
A Guide, a Technical Reference, spreadsheets applied to case studies, and other material to help agencies address travel time reliability in their plans and programs.
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Recently Congress enacted MAP-21 which calls for performance based planning and programming. MAP-21 covers a number of goal areas including travel time reliability. Improving performance by improving operational efficiency helps transportation agencies meet customer demands even in lean times. Understanding how different levels of expenditures are likely to affect reliability and other goal areas results in better use of scarce funding.
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Other L05 products posted for use in the L38 pilots can be found on the following page.
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Staff Responsibility: William Hyman
Funding for making capacity, renewal, and operations improvements (including reliability) to transportation systems is always limited. Planning large-scale capacity improvements to transportation networks has also become increasingly difficult because of reductions in gas tax revenue and challenges in satisfying different stakeholders. For these reasons, many transportation agencies are looking more closely at traffic-operations and related improvements as a way to get the most out of the existing transportation system.
The objective of this project was to provide transportation agencies with guidance on incorporating reliability into the transportation planning and programming processes.
This project on incorporating reliability performance measures into the transportation planning and programming processes produced three reports: (1) a Guide, (2) a Technical Reference, and (3) a Final Report.
The purpose of the Guide is to help agencies use reliability performance measurement to (a) understand and communicate reliability, (b) identify the tools and methods to help them track transportation system reliability, (c) begin to incorporate reliability into their existing analysis tools, and (d) identify emerging analysis tools that will better help them evaluate reliability and make program and project investment choices that address the reliability of the system. The Guide is organized around four key steps for incorporating reliability into the planning and programming process: (1) measuring and tracking reliability performance, (2) incorporating reliability in policy statements, (3) evaluating reliability needs and deficiencies, and (4) using reliability performance measurement to inform investment decisions.
The Technical Reference provides more detail on calculation and estimation methods that are critical to support the four key steps of the Guide. The Technical Reference includes detailed descriptions of available analytic tools, including those that have been developed through the SHRP 2 Reliability program.
The Final Report summarizes the research that was conducted as part of this project. It includes a summary of a literature review, state-of-the-practice survey, and validation case studies conducted to test the concepts and methods evaluated as part of this project. It also provides a detailed appendix that describes the linkage between this project and the Transportation for Communities—Advancing Projects through Partnership (TCAPP) web tool that was developed in the SHRP 2 Capacity program.
This project also developed a spreadsheet and variants, which were used to support calculations that were used in the case studies.
Product Status: This project is complete.
