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

Free MN CDL Tanker Vehicles Practice Test 2025

Minnesota’s Department of Transportation (MnDOT) regulates tanker truck operations and ensures that all safety standards are met. Drivers must hold a Commercial Driver’s License (CDL) along with a Tank Vehicles (N) endorsement to operate such vehicles, and in some cases, a HazMat (H) endorsement is also required.

Industries relying on tanker trucking services include agriculture, manufacturing, and fuel distribution. Since Minnesota is one of the nation’s top dairy producers, there are a large number of milk tankers. These trucks collect milk from dairy farms and deliver it to processing plants across the state. If you also hold a HazMat (H) endorsement, you can look for jobs in agriculture, where tanker drivers transport fertilizers, chemicals, and pesticides. Because some of these materials are toxic to humans and the environment, it is crucial that they be handled exclusively by professionals.

The first step to becoming a tanker driver in Minnesota should begin weeks before taking the official Tank Vehicles knowledge exam. Before you can get behind the wheel of an actual tanker, you must study the Tank Vehicles section presented in the official 2025 CDL manual (Minnesota CDL Handbook 2025). When you feel ready, we recommend you give our Minnesota CDL Tank Vehicles Endorsement practice tests a try.

These Minnesota CDL Tanker Endorsement practice tests are designed to closely resemble the official written exam, allowing you to evaluate your knowledge in an environment similar to what you’ll encounter at a Driver and Vehicle Services (DVS) exam station. The only notable difference is the lack of a timer, which we have omitted for your convenience.

There is no secret recipe for success. While our practice tests can significantly boost your chances of passing the exam, it’s up to you to become consistent in your training. As you begin, don’t get discouraged by several low scores in a row. It is perfectly normal to fail on your first few attempts, but you can use a special feature to your advantage.

Immediate feedback is provided after every question, regardless of your selected choice. This feedback highlights the correct answer and contains a detailed explanation, allowing you to learn from your mistakes. We recommend noting this explanation in a notebook, which can become an essential reference.

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

What you need to know

6 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. Side-to-side surge can cause
  2. How does liquid surge affect the handling of a tanker?
  3. Hauling liquids in tankers requires special care for which of the following reasons?
  4. How would you expect a truck with a cargo tank that has baffles to handle on the road?
  5. A smooth bore tank is also known as
  6. Empty trucks
  7. A tank endorsement is required for certain vehicles that transport
  8. The best way to take a curve in a tanker is to slow to a safe speed before entering the curve and then _________ as you go through it.
  9. The liquid in a tank with baffles can still have what kind of surge?
  10. You should be very cautious when driving smooth bore tankers, especially when you are
  11. You should know the outage needed for the liquids you carry because
  12. When you load the small tanks of a cargo tank equipped with bulkheads, you should check the
  13. A baffled tanker is one with
  14. You are driving on a clear night. You must dim your headlights from high to low. You should adjust your speed so you can stop within
  15. When your cargo tank has baffles, what handling effect do you expect?
  16. The movement of the liquid in partially filled tanks is called
  17. When should the driver of a tanker that has lost its brakes use a truck escape ramp?
  18. You are driving a tanker truck. The front wheels begin to skid. Which of these is most likely to occur?
  19. An emergency forces you to stop your tanker quickly or crash. You should
  20. Which of these statements about tankers are true?
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