Manual on Uniform Traffic Control Devices (MUTCD)

The MUTCD Official Rulings is a resource that allows web site visitors to obtain information about requests for changes, experiments, and interpretations related to the MUTCD that have been received by the FHWA. Copies of various documents (such as incoming request letters, response letters from the FHWA, progress reports, and final reports) that are available in both pdf and html formats may be viewed on this web site. The current status of experiments, as well as any contact information for the requestor that has been made a part of the public record, is also available.