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On March 5, 2026, the FHWA published a Final Rule adopting Revision 1 of the 11th Edition of the MUTCD, which went into effect on that same day. This revision is part of the ongoing effort to keep traffic control standards updated with the latest safety technologies. When analyzing claims about newly installed or updated road signs, consult the most current official publications. The PDF version of the 11th Edition with Revision 1 is the official, current edition of the manual.
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