U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 36Chapter IPart 4 - PART 4—VEHICLES AND TRAFFIC SAFETY
§ 4.1 - Applicability and scope.
§ 4.2 - State law applicable.
§ 4.3 - Authorized emergency vehicles.
§ 4.4 - Report of motor vehicle accident.
§ 4.10 - Travel on park roads and designated routes.
§ 4.11 - Load, weight and size limits.
§ 4.12 - Traffic control devices.
§ 4.13 - Obstructing traffic.
§ 4.14 - Open container of alcoholic beverage.
§ 4.15 - Safety belts.
§ 4.20 - Right of way.
§ 4.21 - Speed limits.
§ 4.22 - Unsafe operation.
§ 4.23 - Operating under the influence of alcohol or drugs.
§ 4.30 - Bicycles.
§ 4.31 - Hitchhiking.
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