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  • Updated for January 2025
  • Based on 2025 MN commercial driver's license manual

Free Minnesota CDL Combination Practice Test 2025

In the United States, there are three classes of Commercial Driver Licenses (CDLs): Class A, Class B, and Class C. A Class A CDL allows you to operate combination vehicles with a Gross Combination Weight Rating (GCWR) of over 26,000 pounds, in which the towed vehicle weighs more than 10,000 pounds. If you want to drive semi-trucks or tractor-trailers in your career, this is the class of CDL you want.

To obtain a CDL of any class, you must meet several requirements. You must first obtain a Commercial Learner’s Permit (CLP) so you can practice commercial driving until you become proficient at it. To become eligible for a CLP, you must complete a medical examination and pass the official General Knowledge test on general commercial driving theory. When you obtain your CLP, you can start practicing commercial driving. Once you believe you’ve sufficiently mastered it (but not before at least two weeks have elapsed), you can take the skills test to evaluate your commercial driving abilities, a necessary step toward obtaining a CDL.

However, depending on the class of CDL you’re applying for and the types of loads you plan to carry, you may have to pass other official knowledge tests as well. To operate combination vehicles, you’ll have to pass the official Combination Vehicles knowledge test.

This free Minnesota CDL Combination practice test is based on the official CDL manual (Minnesota CDL Handbook 2025), just like the official Combination Vehicles knowledge test. It is up to date as of January, 2025. There are 25 questions and answers on such topics as combination braking systems, combination driving techniques, coupling and uncoupling, and vehicle inspections. But unlike the official test questions, each practice question comes with a helpful hint and an explanation of the correct answer.

Once you’ve passed your tests and are holding a CDL of the appropriate class and the endorsements you want, you can take advantage of Minnesota’s various economic opportunities for truck drivers. The state has long been known for its agricultural sector (including sugar beets, corn, peas, soybeans, and logging) and its mining sector (chiefly iron ore). However, Minnesota’s economy has diversified into services and manufacturing (such as machinery and medical devices). Truckers deliver materials and equipment to these sectors as well as transport agricultural and manufactured products. Finally, the state’s proximity to Canada creates opportunities for truckers in cross-border trade.

  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements

What you need to know

9 min to complete
Available in EN and ES
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.

What to expect on the actual MN DVS exam

20

questions

16

correct answers to pass

80%

passing score

List of questions (classic view)

  1. After you lock the kingpin into the fifth wheel, how should you check the connection?
  2. After you connect the air lines but before you back under the trailer, you should
  3. Which statement best illustrates the "crack-the-whip" effect?
  4. When you inspect the landing gear after uncoupling the trailer, where should the tractor be?
  5. What is the safest way to turn right from a two-way road?
  6. To drive a triple combination vehicle, you must have
  7. To prevent a rollover, cargo should be
  8. Combination vehicles take longer to stop when they are empty than when they are fully loaded, because
  9. If your vehicle gets stuck on a railroad track, you should
  10. Low-slung vehicles can be risky at railroad crossings because
  11. On a double or triple vehicle, which wheels offtrack the most?
  12. When you're pulling doubles or triples, the shut-off valves should always be
  13. On a trailer, where is the yellow antilock brake (ABS) malfunction lamp located?
  14. Even before antilock braking systems (ABS) were required, some vehicles already had them. How can you check if your vehicle has ABS?
  15. An antilock braking system (ABS) is useful
  16. After coupling, make sure that the air lines are not crossed. How should you do this?
  17. During uncoupling, you should disconnect the electrical cable and
  18. Before you start to uncouple, you must
  19. You can confirm that air is going to all brakes in your trailers by
  20. To uncouple a loaded trailer, after the landing gear has made firm contact with the ground, you should
  21. If the trailer has antilock brakes (ABS) but the tractor doesn't,
  22. To test the tractor protection valve, charge the trailer air brake system, turn off the engine, and
  23. If your test of the tractor protection valve is successful,
  24. The tractor protection valve is designed to close automatically if the air pressure falls into the pressure range specified by the manufacturer, typically
  25. As part of your vehicle inspection test, if your vehicle is equipped with air brakes and has a trailer, you will inspect the air connections between the truck or tractor and the trailer. Make sure that the ________ are locked in place and free of damage or air leaks.
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