CDL practice tests
Pick an endorsement or start with general knowledge. Every test is randomized with instant pass/fail scoring and explanations after each answer.
Free · 30 questions
General Knowledge
Practice general knowledge CDL test questions covering inspections, safe driving, cargo, and regulations — the core exam every Class A, B, and C applicant takes.
Free · 15 questions
Air Brakes
Air brake endorsement practice questions on compressors, tanks, spring brakes, dual systems, and pre-trip checks.
Free · 15 questions
Combination Vehicles
Practice coupling, fifth wheels, jackknife prevention, doubles/triples basics, and safe turning for combination vehicle endorsements.
Pro · 10 questions
Hazmat
Hazardous materials endorsement practice covering placards, shipping papers, loading rules, and emergency response basics.
Pro · 10 questions
Passenger
Passenger endorsement questions on bus safety, railroad crossings, boarding, and emergency procedures.
How to use these CDL practice tests
Start with general knowledge — every CDL applicant takes it. Add air brakes if your vehicle uses them, and combination vehicles for Class A. Endorsements like hazmat and passenger require additional written exams; those full banks are included with PassCDL Pro.