A design prototype by Datopian, not an official website
Find a Commonwealth ResourceU.S Department of Transportation
The objective of this project was to develop system designs for programs to monitor travel time reliability and to prepare a guidebook that practitioners and others can use to design, build, operate, and maintain such…
Updated Oct 25, 2026
U.S Department of Transportation
The objective of this project was to develop technical relationships between reliability improvement strategies and reliability performance metrics. This project defined reliability, explained the importance of travel…
Updated Oct 25, 2026
U.S Department of Transportation
'SHRP 2 initiated the L38 project to pilot test products from five of the program’s completed projects. The products support reliability estimation and use based on data analyses, analytical techniques, and…
Updated Oct 25, 2026
U.S Department of Transportation
Travel time reliability information includes static data about traffic speeds or trip times that capture historic variations from day to day, and it can help individuals understand the level of variation in traffic.…
Updated Oct 25, 2026
U.S Department of Transportation
Experimental estimates of the travel times experienced by a sample of freight trucks observed moving between all county pairs in the United States between October and December 2018 (three months). Estimated by parsing…
Updated Oct 25, 2026
U.S Department of Transportation
Experimental estimates of the travel times experienced by a sample of freight trucks observed moving between all county pairs in the United States over the course of calendar year 2023. Estimated by parsing GPS pings…
Updated Oct 25, 2026
U.S Department of Transportation
This project focused specifically on design treatments that can be used to improve travel time reliability. The objectives of this research were to (1) identify the full range of possible roadway design features used by…
Updated Oct 25, 2026
U.S Department of Transportation
The Highway Capacity Manual (HCM) historically has been among the most important reference guides used by transportation professionals seeking a systematic basis for evaluating the capacity, level of service, and…
Updated Oct 25, 2026
U.S Department of Transportation
Experimental estimates of the travel times experienced by a sample of freight trucks observed moving between all county pairs in the United States over the course of calendar year 2021. Estimated by parsing GPS pings…
Updated Oct 25, 2026
U.S Department of Transportation
Experimental estimates of the travel times experienced by a sample of freight trucks observed moving between all county pairs in the United States over the course of calendar year 2020. Estimated by parsing GPS pings…
Updated Oct 25, 2026
U.S Department of Transportation
The objective of this project was to develop system designs for programs to monitor travel time reliability and to prepare a guidebook that practitioners and others can use to design, build, operate, and maintain such…
Updated Oct 25, 2026
U.S Department of Transportation
The Washington site used the reliability guide from Project L02, analysis tools for forecasting reliability and estimating impacts from Project L07, Project L08, and Project C11 as well as the guide on reliability…
Updated Oct 25, 2026
U.S Department of Transportation
The goal of the SHRP 2 Project L33 Validation of Urban Freeway Models was to assess and enhance the predictive travel time reliability models developed in the SHRP 2 Project L03, Analytic Procedures for Determining the…
Updated Oct 25, 2026
U.S Department of Transportation
Experimental estimates of the travel times experienced by a sample of freight trucks observed moving between all county pairs in the United States over the course of calendar year 2019. Estimated by parsing GPS pings…
Updated Oct 25, 2026
