Wyoming Department of Transportation, Driver Services Program
Wyoming CDL practice tests
How Wyoming handles the commercial learner permit, the fees and the skills test.
- General Knowledge24 questions, required of every applicant
- Air Brakes20 questions, skip it and an L restriction applies
- Combination Vehicles18 questions, needed for Class A
- Hazardous Materials20 questions, endorsement H
- Tank Vehicles16 questions, endorsement N
Every knowledge area
The 145 questions are the same in every state. Start with general knowledge, then sit the areas Wyoming will write onto the permit.
General Knowledge
Required of every applicant: inspection, control, space and speed management, hazard perception, emergencies and hours of service.
Air Brakes
Air brake knowledge and vehicle checks for applicants who may drive vehicles with air brakes.
Combination Vehicles
Coupling, the fifth wheel, off tracking and trailer swing. Needed for Class A.
Hazardous Materials
Placards, shipping papers, segregation and the security threat assessment.
Tank Vehicles
Liquid surge, baffles, outage and why a tanker rolls over so readily.
Doubles and Triples
Rearward amplification, converter dollies and coupling a second or third trailer.
Passenger Transport
Bus inspection, standee lines, passenger supervision and railroad crossings.
School Bus
Danger zones, loading and unloading, student crossing and evacuation.
What is different in Wyoming
Wyoming in particular
Wyoming keeps most CDL skills testing inside the state system itself: third party examiners are only allowed to test their own employees or students and are barred from charging a fee, so the public testing pathway runs almost entirely through the ten WYDOT exam offices rather than a network of private examiners.
The written exams themselves are federal
Wyoming decides the permit rules, the fees and who runs the skills test, but the knowledge you are tested on comes from 49 CFR Part 383 and is the same in every state, which is why the 145 questions here work wherever you apply.
What changes in this state
Commercial learner permit
A Wyoming commercial learner's permit is valid for 365 days, and the holder must complete skills testing and be issued the commercial driver license before that permit expires.
Wyoming Department of Transportation, checked Aug 28, 2026Fees
Written knowledge tests are free, but scheduling the driving skills test requires paying an $85 fee in advance.
Wyoming Department of Transportation, checked Aug 28, 2026Where you test
Skills tests are given by appointment at ten designated WYDOT driver exam offices around the state, in Casper, Cheyenne, Cody, Evanston, Gillette, Rawlins, Riverton, Rock Springs, Sheridan, and seasonally in Afton, and applicants must bring their own vehicle.
Wyoming Department of Transportation, checked Aug 28, 2026Wyoming CDL written exams, in the federal format.
145 cited questions, free, with nothing to sign up for. The permit rules above are Wyoming's. The knowledge is 49 CFR Part 383.