State Adoption of the Current Edition (2023 MUTCD)

The 11th Edition of the MUTCD was published on December 19, 2023. The adopted changes became effective on January 18, 2024. 23 CFR provides the States with a 2-year period from the effective date to adopt the National Manual or have a State MUTCD/supplement that is in substantial conformance with the National Manual [23 CFR 655.603(b)].

The map and list below summarize State adoptions of the 11th Edition MUTCD as of May 20, 2026.