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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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Changeable Message Signs

Evaluating Driver Response to a Speed Feedback Trailer at Median Crossovers Within Freeway Construction Work Zones

A series of field evaluations were performed to assess the speed reduction effects of a speed feedback trailer (SFT) positioned at various locations before and after a median crossover section within … [Read more...] about Evaluating Driver Response to a Speed Feedback Trailer at Median Crossovers Within Freeway Construction Work Zones

Evaluating Driver Response to Speed Feedback Trailers and Digital Speed Limit Signs Positioned Near the Work Area Within Freeway Construction Work Zones

A series of field evaluations were conducted within work zone lane closures on rural freeways in Michigan to determine 1) the optimal positioning of a speed feedback trailer (SFT) approaching an … [Read more...] about Evaluating Driver Response to Speed Feedback Trailers and Digital Speed Limit Signs Positioned Near the Work Area Within Freeway Construction Work Zones

Enhancing Safety in Work Zones: The Influence of Speed Feedback on Driving Behavior

Introduction: Work zones play a vital role in maintaining and enhancing road infrastructure to meet growing transportation needs. However, work zones have been identified as hot spots of crashes, with … [Read more...] about Enhancing Safety in Work Zones: The Influence of Speed Feedback on Driving Behavior

Radar Speed Signs

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Truck VMS Signs

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Portable Traffic Message Signs

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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