CDL practice test
Practice for the commercial driver's license knowledge tests: general knowledge, cargo, air brakes, combination vehicles, doubles and triples, tank vehicles, hazardous materials, passenger and school bus. Written from state CDL manuals based on the national model.
What the questions cover
- CDL classes, endorsements and disqualifications
- Vehicle inspection
- Speed, space and stopping distance
- Weather, fatigue and distracted driving
- Securing cargo
- Air brakes
- Combination vehicles (Class A)
- Doubles and triples (T)
- Tank vehicles (N)
- Hazardous materials (H)
- Passenger transport (P)
- School bus (S)