| A | B |
|---|
| GCWR | Gross combination weight rating |
| GVWR | Gross Vehicle Weight Rating |
| CMV | Commercial Motor Vehicle |
| CDL | Commercial Drivers License |
| CDLIS | Commercial Drivers License Information System |
| DOT | Department of Transportation |
| Class A | vehicles with a GVWR of 26,000+ |
| Class B | GVWR up to |
| HAZMAT | Hazardous Materials |
| TSA | Transportation Security Administration |
| FBI | Federal Bureau of Investigation |
| HME | Hazardous Material Endorsement |
| Class A License | Needed to drive a combination vehicle with a GVWR over 26000 towing a unit over 10000 pounds |
| Class B License | Needed to drive a single vehicle with a GVWR over 26000 pounds |
| Class C License | Needed to drive a vehicle designed to carry 16 or more people |
| Class C License | You need this to drive a vehicle carrying hazardous material |
