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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

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

Modeling Vehicle Merging Behavior in Work Zone Merging Areas During the Merging Implementation Period

Using the classification and regression tree (CART) method, this study aims to model the vehicle merging behavior at work zone merging areas during the merging implementation period. Hereafter, the … [Read more...] about Modeling Vehicle Merging Behavior in Work Zone Merging Areas During the Merging Implementation Period

Missouri, Kansas Join Other States Pushing ‘Zipper Merge’

Transportation departments in Missouri and Kansas have joined Minnesota and Washington in urging drivers to use the "zipper merge" method when approaching lane closures.   Zipper merging is to use all … [Read more...] about Missouri, Kansas Join Other States Pushing ‘Zipper Merge’

Evaluation of Merge Control Strategies at Interstate Work Zones Under Peak and Off-Peak Traffic Conditions

Maintenance and rehabilitation projects of interstate facilities typically mandate lane closures.   Lane closures require merging maneuvers that often result in reduced speeds and traffic bottlenecks. … [Read more...] about Evaluation of Merge Control Strategies at Interstate Work Zones Under Peak and Off-Peak Traffic Conditions

Work Zone Simulator Analysis: Driver Performance and Acceptance of Alternate Merge Sign Configurations

Improving work zone road safety is an issue of great interest due to the high number of crashes observed in work zones. Departments of Transportation (DOTs) use a variety of methods to inform drivers … [Read more...] about Work Zone Simulator Analysis: Driver Performance and Acceptance of Alternate Merge Sign Configurations

Real-Time Merging Traffic Control for Throughput Maximization at Motorway Work Zones

Work zones on motorways necessitate the drop of one or more lanes which may lead to significant reduction of traffic flow capacity and efficiency, traffic flow disruptions, congestion creation, and … [Read more...] about Real-Time Merging Traffic Control for Throughput Maximization at Motorway 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