CDL Combination Vehicles Test
Coupling, inspecting and driving tractor-trailers.
Start practicing · Topic Study · Sample questions
What's on the Test
- Coupling and uncoupling—The procedures for proper coupling and uncoupling a tractor to a semi-trailer (5 questions): Coupling and Uncoupling
- Vehicle inspection—The objectives and proper procedures that are unique for performing vehicle safety inspections on combination vehicles (5 questions): Inspecting a Combination Vehicle
- General operating practices and procedures (10 questions): Driving Combination Vehicles Safely, Combination Vehicle Air Brakes, Antilock Brake Systems
How the Exam Works
- Who takes it
- Class A applicants.
- Format
- 20 questions, each with three options.
- To pass
- 16 right (80%), as on every CDL knowledge test (49 CFR 383.135).
Frequently Asked Questions
How many questions are on the CDL Combination Vehicles test?
20, and you need 16 right to pass. A few states differ; your state's CDL manual says.
Who needs a Class A CDL?
Anyone driving a combination rated 26,001 pounds or more (GCWR) whose trailer is rated over 10,000 pounds (GVWR). A Class A license also covers Class B and C vehicles (49 CFR 383.91).
Are these the real test questions?
No. They're our own, written from the federal rules and the CDL manual's facts, in the real test's format: three options each and the same number of questions. We're not affiliated with any state, FMCSA or AAMVA.
After the Test
Passing the knowledge tests for your vehicle gets you a commercial learner’s permit (CLP). Hold it at least 14 days, finish entry-level driver training, then take the skills test. How to Get a CDL