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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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Warning Signs

Driver Performance Comparison of Fluorescent Orange to Standard Orange Work Zone Traffic Signs

Some agencies use durable fluorescent orange sign sheeting on warning signs in work zones. The literature shows that such sheeting is more conspicuous than standard nonfluorescent orange sheeting, but … [Read more...] about Driver Performance Comparison of Fluorescent Orange to Standard Orange Work Zone Traffic Signs

A Study of the Visibility and Effectiveness of Fluorescent Retroreflective Traffic Control Signing in Work Zone Applications

Road works present a special challenge to both the driver and the traffic engineer. Work zone accident statistics attest to the need for safety improvements. One way traffic engineers have attempted … [Read more...] about A Study of the Visibility and Effectiveness of Fluorescent Retroreflective Traffic Control Signing in Work Zone Applications

Redesign and Evaluation of Selected Work Zone Sign Symbols

A study of traffic sign symbols was completed recently at the FHWA Turner-Fairbank Highway Research Center in McLean, Virginia. As part of this research, four work zone traffic control warning signs ( … [Read more...] about Redesign and Evaluation of Selected Work Zone Sign Symbols

Alternative Sign Sequences for Work Zones on Rural Highways

Two experiments were done on a two-lane rural road (US-2) in central Maine to evaluate the effectiveness of alternate signing sequences for providing warning to motorists of construction and … [Read more...] about Alternative Sign Sequences for Work Zones on Rural Highways

Safety Effects of Fluorescent Yellow Warning Signs at Hazardous Sites in Daylight

Yellow warning signs are an important and abundant type of traffic control device. Improving warning signs could be a cost-effective countermeasure at hazardous locations. The use of fluorescent … [Read more...] about Safety Effects of Fluorescent Yellow Warning Signs at Hazardous Sites in Daylight

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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