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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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Travel Time

Effect of Road Construction Projects on Travel Time Reliability

Road construction projects have a significant effect on the operational performance of the roads (say, freeways) leading to an increase in congestion and delay during the construction period. The … [Read more...] about Effect of Road Construction Projects on Travel Time Reliability

Analytical Methods for Work Zone Travel Time Reliability

Travel time reliability studies have garnered interest in recent years with researchers and practitioners recognizing reliability as a trait of significant importance to commuters. Presence of work … [Read more...] about Analytical Methods for Work Zone Travel Time Reliability

A Work Zone Simulation Model for Travel Time Prediction in a Connected Vehicle Environment

A work zone bottleneck in a roadway network can cause traffic delays, emissions and safety issues. Accurate measurement and prediction of work zone travel time can help travelers make better routing … [Read more...] about A Work Zone Simulation Model for Travel Time Prediction in a Connected Vehicle Environment

Evaluation of Traffic Control Options in Work Zones

Lane closures for work zones along freeways produce bottlenecks. These bottlenecks are problematic due to loss of capacity and excessive lane changes, which impact the facility performance represented … [Read more...] about Evaluation of Traffic Control Options in Work Zones

Optimal Variable Speed Limit Control under Connected Work Zone and Connected Vehicle Environment

Despite the long-term benefits gained through road maintenance projects, the work zone involved can cause serious traffic congestion and greatly increase traffic delay. Variable speed limit (VSL) … [Read more...] about Optimal Variable Speed Limit Control under Connected Work Zone and Connected Vehicle Environment

Modeling Freeway Work Zones With Mesoscopic Dynamic Traffic Simulator: Validation, Gaps, and Guidance

This study developed a validation procedure for a dynamic traffic assignment—based mesoscopic simulator and identified its relevant data requirements. Model inconsistencies at the network level can be … [Read more...] about Modeling Freeway Work Zones With Mesoscopic Dynamic Traffic Simulator: Validation, Gaps, and Guidance

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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