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CDL Practice Tests
Pick what you're studying for and work through the tests in order. Every question includes an explanation so you learn the reasoning, not just the answer.
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3 tests · 60 questions · about 36 min
The tests most Class A applicants study before the written exam.
- Start here
General Knowledge
Core knowledge every commercial driver must demonstrate: vehicle inspection, safe operation, and basic control.
20 questions · about 12 min
- Take this test
Air Brakes
Air brake system components, inspection routines, and safe braking practice for air-equipped vehicles.
20 questions · about 12 min
- Take this test
Combination Vehicles
Coupling and uncoupling, off-tracking, and handling tractor-trailer combinations.
20 questions · about 12 min
Add an endorsement test if you need it
Showing 8 of 8 practice tests.
Core knowledge tests
3 tests
General Knowledge
Required for every CDL applicant
Core knowledge every commercial driver must demonstrate: vehicle inspection, safe operation, and basic control.
Air Brakes
Needed to remove the L restriction
Air brake system components, inspection routines, and safe braking practice for air-equipped vehicles.
Combination Vehicles
Required for Class A
Coupling and uncoupling, off-tracking, and handling tractor-trailer combinations.
Endorsement tests
5 tests
HazMat (H)
Hazardous materials endorsement
Placarding, shipping papers, loading rules, and emergency response basics.
Tanker (N)
Liquid and gas bulk cargo
Surge, baffles, bulkheads, and safe handling of liquid loads.
Doubles / Triples (T)
Multiple trailers
Coupling multiple trailers, converter dollies, and crack-the-whip control.
Passenger (P)
Buses and passenger vehicles
Passenger safety, loading, and emergency procedures for bus operations.
School Bus (S)
Student transport
Loading and unloading students, danger zones, and evacuation procedures.
Free study questions written in-house and cross-checked against publicly published state CDL manual material. These are practice questions only — they are not official DMV or state exam questions. Always study your state CDL manual.
Practising is step one — here's the rest
Three things you can do right now, in order.
Check the requirements
FreeLicense classes, permits, medical steps and endorsements in plain English.
Check your state's process
FreeAges, permit hold times and fees are set state by state.
See the full training path
OverviewThe ordered steps from CDL theory study to behind-the-wheel training.
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