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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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Washington

Removing temporary traffic control devices with the flow of traffic vs. backing the work vehicle behind to remove the devices

Washington DOT requires that temporary traffic control devices be removed by the contractor in reverse order. Recently, the allowance of the removal of channelizing devices with the flow of traffic … [Read more...] about Removing temporary traffic control devices with the flow of traffic vs. backing the work vehicle behind to remove the devices

Sand Barrels in Work Zones

WSDOT includes information on inertial barrier systems in Washington's standard plan documents. See "C-90.10-00 Impact Attenuator Inertial Barrier Configurations" on the website below for details. … [Read more...] about Sand Barrels in Work Zones

Center lane closure

In many instances Washington shoulder widths and pavement depths do not allow shifting a full lane of traffic onto them, so WSDOT probably couldn't accomodate the plan as shown (S&P2956-1.pdf and … [Read more...] about Center lane closure

Changing light bulbs on overhead signs

Washington DOT does not have a strict requirement that lanes be closed while changing lights or doing other overhead work that takes place over a live lane, but it is strongly recommended and … [Read more...] about Changing light bulbs on overhead signs

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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
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