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Final rule.

The MUTCD is incorporated in the FHWA regulations, approved by the FHWA, and recognized as the national standard for traffic control devices used on all streets, highways, bikeways, and private roads open to public travel. The purpose of this final rule is to revise certain definitions and guidance relating to traffic control devices in Part 1 (General) of the MUTCD. The changes will clarify the definition of Standard statements in the MUTCD and clarify the use of engineering judgment and studies in the application of traffic control devices.

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