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

Free Michigan CDL Permit Practice Test: General Knowledge 2025

Hello, future Michigan trucker! This CDL General Knowledge practice test is your first step on the road to hitting the road in a big rig. The following practice test is designed to cover all bases much like the real thing.

Our 50 multiple-choice questions come straight from the Michigan Commercial Driver License Manual and state laws. We’re talking traffic signs, signals, right-of-way rules, trucking laws, speed limits, vehicle inspection, and basic commercial vehicle safety. It’s all here to make you a safer, more knowledgeable driver.

Each question contains a hint and an explanation. Please take your time reading them even if you get the answer right because they will give you an in-depth understanding of the rules and why they are so important on the highway.

Commercial driving has its particularities in Michigan. You are going to want to know things such as seasonal weight restrictions during spring breakup, and how to cross at our busy border crossings. We’ve worked to craft Michigan-specific content that will prepare you for what you’re about to encounter.

This practice test is excellent for first-time applicants, for those looking to renew their license, or for drivers who just want to add new endorsements. Because it is based on the most recent MI Commercial Driver License Manual, you are well assured you will get updated information.

Want to dig deeper? Explore our complete General Knowledge test series. We have hundreds of questions covering everything from air brakes to hazmat. And if you’re curious about all of the associated costs in getting your CDL, be sure to have a look at our guide to CDL license expenses that breaks it all down. Need a step-by-step walkthrough of the whole process? Our CDL license guide has got you covered.

Keep in mind, this practice test is just the beginning. The real reward will be when you prove to become a safe and responsible commercial driver on Michigan’s roadways. Good luck, and happy trucking!

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

What you need to know

4.5 out of 5 • 108 votes
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 MI DOS exam

50

questions

40

correct answers to pass

80%

passing score

List of questions (classic view)

  1. Which of the following statements about using mirrors is true?
  2. Which of the following should you NOT do when you are driving on slippery roads?
  3. If you experience a hazardous materials emergency, you should
  4. The locking jaws should close around which section of the kingpin?
  5. Which of the following is a key steering component?
  6. Always try to back toward the driver's side because
  7. The most important hand signal you should agree on with a helper is
  8. It has just reached freezing. Which of the following areas may be slippery?
  9. You should put the starter switch key into your pocket while you perform the pre-trip inspection because
  10. You should inspect wheel bearing seals for
  11. Total stopping distance equals
  12. If you double your speed, how much more distance will it take to stop?
  13. Do empty trucks have the best braking?
  14. If you are traveling at 55 mph in a 30-foot vehicle, you should leave how many seconds of following distance?
  15. What might happen if you swing wide to the left before you turn right?
  16. What is the definition of a hazard?
  17. What is the best way to figure out how many seconds of following distance you have?
  18. You don't want to be a distracted driver, so you
  19. If you are confronted by an aggressive driver, you should
  20. Letting the air out of hot tires
  21. If you feel drowsy while driving, what should you do?
  22. If the engine is not overheated, is it completely safe to remove the radiator cap?
  23. While driving at night, which lights should you use as often as you can?
  24. Where should you place your warning devices if you must stop on a one-way road or divided highway?
  25. When backing, it is important to use a helper
  26. How can you start moving without rolling backward?
  27. Which is NOT one of the four basic skills that operating a commercial vehicle requires?
  28. In which of the following two situations should you downshift?
  29. Signs of distracted drivers include
  30. How long does it take a typical tractor-trailer to clear a double railroad track?
  31. Which of the following might get stuck at a raised railroad crossing?
  32. When you start down a long downgrade, which of the following should influence your choice of speed?
  33. Which of the following should you NOT do if you experience a tire failure?
  34. How can you determine if your vehicle is equipped with an anti-lock braking system (ABS)?
  35. Which of these is NOT part of the basic method for shifting up?
  36. An anti-lock braking system (ABS) will
  37. Which of the following is NOT true about an escape ramp?
  38. What is a common cause of tire fires?
  39. What can you do at an accident scene to help avoid another accident?
  40. Which of the following can cause a vehicle fire?
  41. On which of the following types of fires should you NOT use a B:C fire extinguisher?
  42. Hazardous materials placards are
  43. What will help a drunk sober up?
  44. Before a trip, to prevent drowsiness, you should
  45. How many tie-downs are required for a 20-foot load?
  46. Why should you cover your cargo?
  47. Before transporting a sealed load, you must check
  48. To transport cargo safely, which of the following are you NOT responsible for?
  49. The minimum tread depth for front tires is
  50. How often must you stop to check your cargo while on the road?
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