Free CDL Practice Tests
Free CDL practice tests with instant scoring and answer explanations — General Knowledge, Air Brakes and Combination Vehicles. No sign-up. Study for your commercial driver's license permit.
CDL General Knowledge Practice Test
Free CDL general knowledge practice test — no sign-up.
CDL Air Brakes Practice Test
Free CDL air brakes practice test — no sign-up.
CDL Combination Vehicles Practice Test
Free CDL combination vehicles practice test — no sign-up.
CDL Hazmat Practice Test
Free CDL hazmat endorsement practice test — no sign-up.
CDL Tanker Practice Test
Free CDL tanker endorsement practice test — no sign-up.
CDL Doubles/Triples Practice Test
Free CDL doubles/triples practice test — no sign-up.
CDL Passenger Practice Test
Free CDL passenger endorsement practice test — no sign-up.
CDL School Bus Practice Test
Free CDL school bus endorsement practice test — no sign-up.
CDL Pre-Trip Inspection Practice Test
Free CDL pre-trip inspection practice test — no sign-up.
Hours of Service (HOS) Calculator
How many hours can you still drive?
CDL Class & Endorsement Finder
Which CDL and endorsements do you need?
CDL Pre-Trip Inspection Checklist
Interactive, printable pre-trip checklist.
CDL Air Brake Test Checklist
The in-cab air brake test, step by step.