CDL Test
Pass your CDL on the first try
About CDL Test
Get ready for your Commercial Driver's License exam with 800+ practice questions spanning General Knowledge, Air Brakes, Combination Vehicles, Doubles & Triples, HazMat, Passenger Vehicles, Tank Vehicles, and the Pre-trip Inspection. Includes realistic mock tests, in-app Quick Reference, and Field Tools every trucker uses: Pre-trip checklist, Hours of Service tracker, Per Diem, Cost Per Mile, Load Profitability, and IFTA quarterly calculator.
What you'll find inside
- ✓ 800+ practice questions
- ✓ All endorsements covered
- ✓ Realistic mock tests
- ✓ Quick Reference cheat sheets
- ✓ Field Tools (Pre-trip, HOS, IFTA)
- ✓ Flash cards
- ✓ Voice readout
- ✓ Offline access
Practice CDL questions free
Pick a topic and answer 10 free questions in your browser. No signup, no download required.
Air Brakes
Dual air systems, governor pressure, low-air warnings, spring brakes, and the final air brake check.
Combination Vehicles
Coupling and uncoupling, tractor-trailer driving, off-tracking, and combination vehicle inspection.
Doubles and Triples
Pulling two or three trailers, converter dollies, pintle hooks, and double/triple-specific safety.
General Knowledge
The core CDL exam everyone takes: vehicle inspection, basic control, shifting, hazards, and emergencies.
Hazardous Materials
HazMat classes, placards, shipping papers, segregation, emergencies, and the ERG.
Passenger Vehicles
Bus and passenger transport: pre-trip, passenger management, hazards, and braking with passengers aboard.
Pre-trip Inspection
The FMCSA 11-point inspection — engine compartment, in-cab, walk-around, and air brake checks.
Tank Vehicles
Liquid surge, baffled vs. unbaffled tanks, smooth-bore handling, and tank-specific inspection.
Get CDL Test on your phone
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