CDL practice tests
555+ questions across every major endorsement. Randomized tests, change-answer-before-next UX, missed-question review, and full exam simulations with Pro.
Your CDL study checklist
Pass each written test category at 80%+ in exam mode before scheduling your DMV appointment.
- 1General Knowledge
Required for all CDL classes — aim for 80%+ on a 50-question exam simulation.
- 2Air Brakes
Required if your vehicle has air brakes.
- 3Combination Vehicles
Class A only — tractor-trailer coupling and safe driving.
- 4Pre-Trip Inspection
Pro — written inspection knowledge for skills test prep.
Free · 170 questions · Exam 50 Q
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 · 75 questions · Exam 25 Q
Air Brakes
Air brake endorsement practice questions on compressors, tanks, spring brakes, dual systems, and pre-trip checks.
Free · 70 questions · Exam 20 Q
Combination Vehicles
Practice coupling, fifth wheels, jackknife prevention, and safe turning for combination vehicle endorsements.
Pro · 65 questions · Exam 30 Q
Hazmat
Hazardous materials endorsement practice covering placards, shipping papers, loading rules, and emergency response basics.
Pro · 50 questions · Exam 20 Q
Passenger
Passenger endorsement questions on bus safety, railroad crossings, boarding, and emergency procedures.
Pro · 40 questions · Exam 20 Q
Doubles & Triples
T endorsement practice for double and triple trailer combinations — crack-the-whip, converter dollies, and coupling order.
Pro · 35 questions · Exam 20 Q
Tanker
Tank vehicle endorsement questions on surge, baffles, center of gravity, and safe loading of liquid cargo.
Pro · 50 questions · Exam 25 Q
Pre-Trip Inspection
Written-exam pre-trip inspection knowledge: engine compartment, cab checks, coupling, brakes, lights, tires, and cargo — scored questions with explanations (not a skills walkaround simulator).
CDL practice tests by state
All 50 states — general knowledge practice with state-specific test facts.
- Alabama CDL practice test
- Alaska CDL practice test
- Arizona CDL practice test
- Arkansas CDL practice test
- California CDL practice test
- Colorado CDL practice test
- Connecticut CDL practice test
- Delaware CDL practice test
- Florida CDL practice test
- Georgia CDL practice test
- Hawaii CDL practice test
- Idaho CDL practice test
- Illinois CDL practice test
- Indiana CDL practice test
- Iowa CDL practice test
- Kansas CDL practice test
- Kentucky CDL practice test
- Louisiana CDL practice test
- Maine CDL practice test
- Maryland CDL practice test
- Massachusetts CDL practice test
- Michigan CDL practice test
- Minnesota CDL practice test
- Mississippi CDL practice test
- Missouri CDL practice test
- Montana CDL practice test
- Nebraska CDL practice test
- Nevada CDL practice test
- New Hampshire CDL practice test
- New Jersey CDL practice test
- New Mexico CDL practice test
- New York CDL practice test
- North Carolina CDL practice test
- North Dakota CDL practice test
- Ohio CDL practice test
- Oklahoma CDL practice test
- Oregon CDL practice test
- Pennsylvania CDL practice test
- Rhode Island CDL practice test
- South Carolina CDL practice test
- South Dakota CDL practice test
- Tennessee CDL practice test
- Texas CDL practice test
- Utah CDL practice test
- Vermont CDL practice test
- Virginia CDL practice test
- Washington CDL practice test
- West Virginia CDL practice test
- Wisconsin CDL practice test
- Wyoming CDL practice test
How PassCDL compares
- 555+ practice questions with explanations
- Full exam mode — 50-question general knowledge simulation (Pro)
- Change answers before moving to the next question
- Missed question review after every test
- Weak area tracking on your account
- 8 practice categories including pre-trip inspection, doubles/triples, and tanker
- ELDT theory guide — how written practice fits with federal training
- PassCDL vs Driving-Tests.org