- Idaho State Police – Commercial Vehicle Safety Division – enforces commercial vehicle safety regulations In Idaho
- Federal Motor Carrier Safety Administration – issues DOT numbers
- Federal Highway Administration
- U.S. Department of Transportation
- National Highway Traffic Safety Administration
Idaho Transportation Department
The Department serves Idaho drivers, auto dealers, truckers, pilots and boat dealers and owners.
- Driver and Motor Carrier Services
- Commercial trucking
- Starting a Trucking Business in Idaho
- Automobile and Boat (Vessel) Dealerships – New and Used
- Aviation Services – Division of Aeronautics
- Boats (Vessels) – titling