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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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Merging Control

Cooperative Highway Work Zone Merge Control Based on Reinforcement Learning in a Connected and Automated Environment

Given the aging infrastructure and the anticipated growing number of highway work zones in the United States, it is important to investigate work zone merge control, which is critical for improving … [Read more...] about Cooperative Highway Work Zone Merge Control Based on Reinforcement Learning in a Connected and Automated Environment

What is the Zipper Merge? Illinois Law Brings Technique to Highways, Rulebook

With construction season approaching, the Illinois Department of Transportation wants drivers to use the zipper merge technique when approaching lane closures. Experts believe that is the quickest way … [Read more...] about What is the Zipper Merge? Illinois Law Brings Technique to Highways, Rulebook

The Dynamic Merge: Using Traffic Volume Based Signing to Improve Workzone Throughput

Roadwork that results in a lane closure can reduce both the safety and efficiency of a roadway. The dynamic merge is a form of merge control designed to mitigate the potential hazards of lane closures … [Read more...] about The Dynamic Merge: Using Traffic Volume Based Signing to Improve Workzone Throughput

Dynamic Lane-Based Signal Merge Control for Freeway Work Zone Operations

Traditional merge control strategies cannot yield the expected effectiveness under heavy traffic conditions at freeway work zones because inevitable traffic conflicts resulting from complex merging … [Read more...] about Dynamic Lane-Based Signal Merge Control for Freeway Work Zone Operations

Modeling Highway Performance Under Various Short-Term Work Zone Configurations

Federal rules mandate state departments of transportation and metropolitan planning organizations to measure and report on the performance of highways within their jurisdictions. Those rules support … [Read more...] about Modeling Highway Performance Under Various Short-Term Work Zone Configurations

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

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Copyright © 2025 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