Motor vehicle administration codes from ANSI D20, the Data Dictionary for Traffic Record Systems, maintained by AAMVA, the American Association of Motor Vehicle Administrators. true A data type for kinds of vehicles that a licensed driver may be approved to operate. Class "A" vehicles - any combination of vehicles with a GCWR of 26,001 or more pounds, provided the GVWR of the vehicle(s) being towed is in excess of 10,000 pounds [49 CFR 383.91(a)(1)]. (Holders of a Class A license may, with the appropriate endorsement, operate all Class B & C vehicles). Class "B" vehicles - any single vehicle with a GVWR of 26,001 or more pounds, or any such vehicle towing a vehicle not in excess of 10,000 pounds GVWR [49 CFR 383.91(a)(2)]. (Holders of a Class B license may, with the appropriate endorsement, operate all Class C vehicles). Class "C" vehicles - any single vehicle, or combination of vehicles, that meets neither the definition of Group A nor that of Group B, but that either is designed to transport 16 or more passengers including the driver, or is used in the transportation of materials found to be hazardous for the purposes of the Hazardous Materials Transportation Act and which require the motor vehicle to be placarded under the Hazardous Materials Regulations (49 CFR part 172, subpart F) [49 CFR 383.91(a)(3)]. Class "M" vehicles - Motorcycles, Mopeds, Motor-driven Cycles. A data type for kinds of vehicles that a licensed driver may be approved to operate. A data type for categories of driving restrictions. Corrective lenses must be worn Mechanical Aid Prosthetic Aid Automatic Transmission Outside Mirror Limit to Daylight Only Limited - other Other CDL Intrastate Only Vehicles without Air Brakes Except Tractor-Trailer Farm Waiver A data type for categories of driving restrictions. A data type for whether a driver was operating a vehicle carrying hazardous materials. Hazardous Materials No Hazardous Materials Unknown A data type for whether a driver was operating a vehicle carrying hazardous materials.