"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 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. The purpose of the MUTCD is to improve safety for all road users, by promoting uniformity, and to incorporate new provisions that reflect technological advances in traffic control device application. Developed and published by the Federal Highway Administration (FHWA) in December 2023 as a PDF download publication only (available from FHWA's website at https://mutcd.fhwa.dot.gov/kno_11th_Edition.htm), this 11th Edition of the MUTCD updates and supersedes the previous 10th Edition, published in 2009."--publisher's website