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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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Dynamic Speed Display 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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INDOT Announces Expansion of Worksite Speed Control Pilot

The Indiana Department of Transportation has announced the expansion of its automated work zone speed enforcement pilot, known as Safe Zones, to Interstate 65 in Lake County, beginning on or soon … [Read more...] about INDOT Announces Expansion of Worksite Speed Control Pilot

A Comprehensive Review of Dynamic Speed Feedback Signs in Reducing Speed at Different Critical Locations

Excessive speed is one of the main causes of fatal crashes worldwide. One speed reduction measure is dynamic speed feedback signs (DSFS), whose main purpose is to make drivers aware of their excessive … [Read more...] about A Comprehensive Review of Dynamic Speed Feedback Signs in Reducing Speed at Different Critical Locations

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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