The Federal Highway Administration has granted interim approval for the optional use of red pavement and pavement markings to increase the visibility of transit station stops, travel lanes, and areas of the roadway reserved for the exclusive use of buses and other transit vehicles. Interim Approval 22 allows the use of the pavement coloration on an interim basis pending official rulemaking and subject to other applicable requirements of the Manual on Uniform Traffic Control Devices for Streets and Highways (MUTCD). Red was selected based on early experimental use and its use for this purpose internationally. The red-colored pavement interim approval follows Interim Approval 14 on the optional use of green-colored pavement in bicycle lanes. For more information, link to Interim Approval 22. (12-4-19)
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