That depends on the type of power unit being used (truck or truck-tractor).
- If the power unit is a truck-tractor in a Class A combination, then a non-commercial Class A drivers license is required.
- Class A does NOT include a combination of vehicles that has a truck registered as a farm truck.
- If the single unit is a truck-tractor of 26,001 pounds or more, then a non-commercial Class B drivers license is required.
- Class B motor vehicles do NOT include a single vehicle registered as a farm truck, when such farm truck has a gross vehicle weight rating of 26,001 pounds, or more.

