Commercial Vehicle Enforcement Unit
According to 390.5 of the Federal Motor Carrier Safety Regulations,
a Commercial Motor Vehicle is . . .
Any self-propelled or towed motor vehicle used on a highway in interstate commerce to transport passengers or property when the vehicle:
Has a gross vehicle weight rating or gross combination weight rating, or gross vehicle weight or gross combination weight, of 4,536 kg (10,001 pounds) or more, whichever is greater.
Is designed or used to transport more than 8 passengers (including the driver) for compensation.
Is designed or used to transport more than 15 passengers, including the driver, and is not used to transport passengers for compensation.
Is used in transporting material found by the Secretary of Transportation to be hazardous under 49 U.S.C. 5103 and transported in a quantity requiring placarding under regulations prescribed by the Secretary under 49 CFR, subtitle B, chapter I, subchapter C.