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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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Channelizing Devices

Warning lights on channelizing devices

Caltrans does not require warning lights on signs or channelizing devices in work zones, but does allow them. Caltrans recommends warning lights be considered on channelizing devices in fog or snow … [Read more...] about Warning lights on channelizing devices

Warning lights on channelizing devices

Maryland State Highway Administration does not typically use warning lights on drums. Only in very rare instances would it do so, for example, if the roadway curves in one direction and a series of … [Read more...] about Warning lights on channelizing devices

Warning lights on channelizing devices

Wisconsin policies on use of Type A & C lights are as follows: - Type C lights are typically only used on drums in tapers, not in tangents. - Type A lights are used on Type III barricades for … [Read more...] about Warning lights on channelizing devices

Requirement for using channelizing devices (e.g. cones) to separate traffic from the work area for a work operation

Montana DOT requires channelizing devices to separate the travel lane from the work zone if the work zone is less than 1000 meters in length and was not using pilot cars through the work zone. If … [Read more...] about Requirement for using channelizing devices (e.g. cones) to separate traffic from the work area for a work operation

Requirement for using channelizing devices (e.g. cones) to separate traffic from the work area for a work operation

New York does not have a specified requirement for this situation. If the work zone is continuously moving, cones may be impractical. In some cases the roadway may not be wide enough to support cones … [Read more...] about Requirement for using channelizing devices (e.g. cones) to separate traffic from the work area for a work operation

Requirement for using channelizing devices (e.g. cones) to separate traffic from the work area for a work operation

Minnesota DOT requires the use of cones but is having a difficult time enforcing compliance. Because of high volumes of trucks (250 to 300 a day in many cases) contractors and their field inspectors … [Read more...] about Requirement for using channelizing devices (e.g. cones) to separate traffic from the work area for a work operation

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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