The Manual on Uniform Traffic Control Devices (MUTCD) for Streets and Highways contains national standards adopted by the Federal Highway Administration. The Massachusetts Amendments to the MUTCD modifies the federal standards where necessary to cover local requirements. It incorporates MassDOT's most recent traffic engineering recommendations. These standards are authorized by Chapter 85, Section 2 of the Massachusetts General Laws.
The standards in this manual apply to any and all streets and highways regardless of type or class.
MassDOT will assist municipalities regarding the proper use of the MUTCD and the Massachusetts Amendments, upon request.
MassDOT has published an update to the Massachusetts Amendments in November 2022.