Manual on Uniform Traffic Control Devices for Streets and Highways (MUTCD)
Source: Federal Highway Administration (FHWA)
The Manual on Uniform Traffic Control Devices for Streets and Highways—the MUTCD—defines the standards used by road managers nationwide to install and maintain traffic control devices on all streets, highways, pedestrian and bicycle facilities, and site roadways open to public travel. The MUTCD, which has been administered by the FHWA since 1971, is a compilation of national standards for all traffic control devices, including road markings, highway signs, and traffic signals. It is updated periodically to accommodate the nation's changing transportation needs and address new safety technologies, traffic control tools, and traffic management techniques.