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

Free NC CDL Tanker Vehicles Practice Test 2025

Have you ever wanted to know the answers to a test before you take it? While this is not entirely possible, we offer a helpful tool that can help you familiarize yourself with the content and format of the Tank Vehicles knowledge test. In North Carolina, you must pass this test to obtain a Tank Vehicles (N) endorsement on your Commercial Driver’s License (CDL). We’ll help you with this goal by providing a series of CDL Tanker Vehicles endorsement practice tests specific to the state of North Carolina.

All 20 practice questions are based on the official 2025 CDL manual (North Carolina CDL Handbook 2025). This document is an essential resource for every aspiring commercial driver, but some students find its content too difficult to study. We know how tiring studying can be, especially when it is about a complex subject. While driving a tanker is not exactly rocket science, you might actually transport rocket fuel with such a vehicle one day.

In the North Old State, you’re more likely to transport liquid fertilizer. This type of cargo is crucial for agricultural operations, especially during planting seasons. However, hauling 5,000 gallons of liquid ammonium nitrate fertilizer is not an easy task. Such toxic materials should be hauled exclusively by commercial drivers who also possess the HazMat (H) endorsement on their CDL.

Dream big but start small. There are plenty of opportunities for tanker drivers in North Carolina, where your driving skills and knowledge of tank vehicles will be highly valued. Consistency is always preferred over intensity, so we recommend you take small steps toward achieving your career goals. Create a daily routine consisting of multiple training sessions. Since you have unlimited attempts, you can use our practice tests as often as you desire. It is perfectly normal to fail several times in a row during your first practice runs, so you should disregard your score for a while. Instead, focus on identifying and learning from your mistakes.

  • 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 NC DMV 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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