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Regulations last checked for updates: May 17, 2025
Title 49 - Transportation last revised: Mar 20, 2025
All Titles
Title 49
Chapter V
Part 523 - PART 523—VEHICLE CLASSIFICATION
§ 523.1 - Scope.
§ 523.2 - Definitions.
§ 523.3 - Automobile.
§ 523.4 - Passenger automobile.
§ 523.5 - Non-passenger automobile.
§ 523.6 - Heavy-duty vehicle.
§ 523.7 - Heavy-duty pickup trucks and vans.
§ 523.8 - Heavy-duty vocational vehicle.
§ 523.9 - Truck tractors.
§ 523.10 - Heavy-duty trailers.
authority:
49 U.S.C. 32901
; delegation of authority at
49 CFR 1.95
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