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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

Safety Impacts of Signalized Lane Merge Control at Highway Work Zones

Lane closures due to highway work zones present many challenges to the goal of ensuring smooth traffic operations and a safe environment for both drivers and workers. Late merge behavior at a work … [Read more...] about Safety Impacts of Signalized Lane Merge Control at Highway Work Zones

A Smart Highway Work Zone Merge System Enabled by Connected Vehicles

Typical traffic control and operations at work zones usually are not very effective in mitigating the work zone bottleneck. A major reason is that the common early merge behaviors limits utilizing the … [Read more...] about A Smart Highway Work Zone Merge System Enabled by Connected Vehicles

Dynamic Lane Change: How a ‘Traffic Cutter’ Could be Helping

Jerry Ullman and his team at Texas A&M Transportation Institute (TTI) have been researching a concept called Dynamic Lane Merge.   That is, instead of merging into the upcoming lane closure early, … [Read more...] about Dynamic Lane Change: How a ‘Traffic Cutter’ Could be Helping

Work Zone Simulator Analysis: Driver Performance and Acceptance of Missouri Alternate Lane Shift Configurations

The objective of this project is to evaluate MoDOT’s alternate lane shift sign configuration for work zones. The single sign proposed by MoDOT provides the traveler with enough information to let them … [Read more...] about Work Zone Simulator Analysis: Driver Performance and Acceptance of Missouri Alternate Lane Shift Configurations

TDOT Explains Why ‘Zipper Merge’ not in TN

The zipper merge concept has caught the attention of Tennessee Department of Transportation (TDOT) since Minnesota started using the method for lane closure over five years ago and reported fewer … [Read more...] about TDOT Explains Why ‘Zipper Merge’ not in TN

New “Dynamic Merge System” Could Soon Reduce Traffic Through I-91 Construction

The Massachusetts Department of Transportation will place Dynamic Merge System on Interstate 91 in Springfield within the next few weeks to help direct drivers through the construction zone.   The … [Read more...] about New “Dynamic Merge System” Could Soon Reduce Traffic Through I-91 Construction

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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