CDL License Classes
Class A CDL
Required for combination vehicles with a GCWR of 26,001+ lbs when the towed vehicle is over 10,000 lbs. Includes tractor trailers, truck and trailer combinations.
Class B CDL
For single vehicles with a GVWR of 26,001+ lbs, or towing a vehicle under 10,000 lbs. Includes straight trucks, large buses, and dump trucks.
Class C CDL
For vehicles transporting hazardous materials or 16+ passengers (including driver) that don't meet Class A or B requirements.
Idaho CDL Test Components
General Knowledge Test
Required for all CDL applicants. Covers safe driving, transporting cargo safely, and pre-trip vehicle inspection. Usually 50 questions.
Air Brakes Test
Required if your vehicle has air brakes. Covers air brake system components, inspection, and emergency procedures.
Combination Vehicles
Required for Class A CDL. Covers coupling/uncoupling, rollover prevention, and jackknife prevention.
Skills Test
Includes pre-trip inspection, basic vehicle control, and on-road driving. Must be taken after passing written tests.
CDL Endorsements
- HHazardous MaterialsTransport hazmat - requires TSA background check
- NTank VehiclesOperate tank vehicles for liquids/gases
- PPassengerOperate buses with 16+ passengers
- SSchool BusOperate school buses - requires P endorsement
- TDouble/Triple TrailersPull double or triple trailers (Class A only)
- XTanker + HazMatCombined N and H endorsements