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The FHWA published a Final Rule adopting the 11th Edition of the MUTCD on December 19, 2023, which became effective on January 18, 2024. Under this rule, states must adopt the 11th Edition of the National MUTCD as their legal state standard within two years of the effective date. When assessing road-sign claims, it is useful to know which standards are currently active in a given jurisdiction. Staying informed about these transition timelines helps clarify which sign designs are legally recognized.
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