The three (3) basic types or classes of Commercial Driver Licenses are described below.
Any combination of vehicles with a gross combination weight rating of 26,001 pounds or more, provided the gross vehicle weight rating of the vehicle or vehicles towed exceeds 10,000 pounds;
Any single vehicle with a gross vehicle weight rating of 26,001 pounds or more, any one of those vehicles towing a vehicle that does not exceed 10,000 pounds gross vehicle weight rating, and any vehicle designed to transport 24 passengers or more, including the driver; and a Class B license will be restricted to operating busses under 26,001 pounds GVWR if the skills test is taken in a bus with a GVWR of less than 26,001 pounds; and
Any single vehicle or combination of vehicles that is not a Class A or Class B if the vehicle is: 1) designed to transport 16 to 23 passengers including the driver; or 2) used in the transportation of hazardous materials that require the vehicle to be placarded under 49 CFR, Part 172, Subpart F.
T: Double/Triple Trailer; P: Passenger; N: Tank Vehicle; H: Hazardous Material; X:Combination of N and H; S: School Bus
M: Intrastate Only (commercial motor vehicle); L: No Air Brakes; P: Licensed CDL operator in front seat