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Work Zone Safety Information Clearinghouse

Library of Resources to Improve Roadway Work Zone Safety for All Roadway Users

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Traffic Congestion

Characterizing the Impact of Nighttime Construction on Traffic-Related Emissions

Nighttime road maintenance and construction work is most commonly initiated where it is impractical or highly undesired to close traffic lanes on certain high-volume roadways during normal daylight … [Read more...] about Characterizing the Impact of Nighttime Construction on Traffic-Related Emissions

Variable Speed Limits Ease Congestion, Reduce Crashes on Highways: Study

In an effort to make traffic move more smoothly, researchers at the University of Missouri tested the effectiveness of Variable Advisory Speed Limit (VASL) systems, which provide drivers with a … [Read more...] about Variable Speed Limits Ease Congestion, Reduce Crashes on Highways: Study

Work Zone Traffic Management Analysis Using Analytical Methods

The course provides hands-on training on basic analytical methods (sketch planning methods) to compute work zone performance measures (WZPM). The WZPM includes the following factors: capacity, speed, … [Read more...] about Work Zone Traffic Management Analysis Using Analytical Methods

Dashboards for Closing the Loop on Monitoring Interstate Work Zone Maintenance of Traffic

Although most agencies have extensive processes in place for designing interstate construction work zones, there is very little quantitative assessment performed on how those work zones operate. … [Read more...] about Dashboards for Closing the Loop on Monitoring Interstate Work Zone Maintenance of Traffic

Analyzing and Improving the Performance of Dynamic Message Sign Reporting Work Zone–Related Congestion

Dynamic Message Sign (DMS) systems aim to provide realistic, reliable, and real-time traffic information to roadway users. This study investigates performance of DMS present at work zone which warn … [Read more...] about Analyzing and Improving the Performance of Dynamic Message Sign Reporting Work Zone–Related Congestion

Capturing Driver Behavior by Measuring Time Gap in Freeway Work Zones

Quantifying the impact that a work zone will have on mobility is currently evaluated in driver models used in traffic microsimulation. It is hypothesized in this paper that the car-following behavior … [Read more...] about Capturing Driver Behavior by Measuring Time Gap in Freeway Work Zones

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Copyright © 2026 American Road & Transportation Builders Association (ARTBA). The National Work Zone Safety Information Clearinghouse is a project of the ARTBA Transportation Development Foundation. It is operated in cooperation with the U.S. Federal Highway Administration and Texas A&M Transportation Institute. | Copyright Statement · Privacy Policy · Disclaimer
American Road and Transportation Builders Association Transportation Development Foundation, American Road and Transportation Builders Association U.S. Department of Transportation Federal Highway Administration Texas A&M Transportation Institute