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  • Updated for December 2024
  • Based on 2024 HI commercial driver's license manual

Free HI CDL Tanker Vehicles Practice Test 2024

Whether driving along the iconic coastal highways of Oahu, passing the lush rainforests and towering cliffs of Maui, or cruising down the volcanic roads on the Big Island, drivers must carefully navigate the narrow, winding roads that are so common in most of this state. With that being said, driving a tanker truck in the Aloha State might be more difficult than you thought, requiring extra caution to maintain stability. We know you’ve got what it takes to become a successful commercial driver, but you must prove yourself to the Hawaii Department of Transportation (HDOT).

Before you can get behind the wheel of an actual tanker, you must obtain a Tank Vehicles (N) Endorsement on your Commercial Driver’s License (CDL). This endorsement allows you to drive vehicles transporting liquids or gases in tanks whose individual capacity is larger than 119 gallons and whose aggregate capacity is at least 1,000 gallons. To transport hazardous liquids and gases such as gasoline and pesticides, you must also obtain a HazMat (H) Endorsement.

It might be difficult to estimate your probability of passing the Tank Vehicles knowledge test on your own. Even when you’re doing a great job memorizing the important aspects of becoming a successful tanker driver, there’s no way to predict the precise questions you’ll get on the official exam. To help you get an idea about your current position in your learning journey, we have created a series of CDL Tank Vehicles Endorsement practice tests specific to the state of Hawaii.

Consisting of 20 questions based on the official 2024 CDL manual (Hawaii CDL Handbook 2024), each practice test closely resembles the official Tank Vehicles knowledge exam. With unlimited attempts, students can train on these practice tests every day. Your chances of passing this exam will gradually increase if you remain consistent in your training. However, it is crucial to remember that your final goal is to become a skilled tanker driver, not to obtain a passing score.

Passing the Tank Vehicles knowledge exam represents one step in your commercial driving career. It is followed by employment, where countless hours of driving will help you further refine your skills. As you cruise down the Hana Highway in a full tanker, you’ll be grateful for the time and effort spent training and learning prior to obtaining the ”N” endorsement.

Commercial Driver's License
  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
  • Triple-checked for accuracy

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.
Ensuring the accuracy and quality of our program is paramount. Learn more about our rigorous standards in our Commitment to Accuracy article.

What to expect on the actual HI 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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