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

Free OR CDL Tanker Vehicles Practice Test 2024

To become a tanker truck driver in Oregon, you must obtain a Tank Vehicles (N) endorsement on your Commercial Driver’s License (CDL). The first step is to pass the official knowledge test, which covers tanker-specific safety procedures, liquid dynamics, emergency procedures and the pre-trip inspection. This test is in addition to meeting all the general requirements for a CDL, such as passing a skills test in a vehicle appropriate for the class of CDL and meeting all the medical requirements.

Oregon’s dairy production offers plenty of opportunities to truck drivers who hold the ”N” endorsement on their CDL. Transporting 5,000 gallons of milk from farms to processing plants is not an easy task, especially when liquid surge makes controlling the truck more difficult than usual. If the road is wet or icy, any sudden maneuver can turn into a catastrophe. Oregon is well-known for heavy rain, particularly in Tillamook County, where a large number of dairy farms are located. As a professional tanker driver, you must fully master the controls of your vehicle. Reduce speed on curves, brake and accelerate smoothly, and always be mindful of the stopping distance (which can be longer than usual).

The learning phase shouldn’t be rushed or skipped. There are no shortcuts, but dedicated students often adopt a smarter approach. While the CDL manual offers everything you need to know to pass the Tank Vehicles knowledge test, its rather complex content can be too difficult to study by someone who is not familiar with some of the advanced concepts of commercial driving. That’s why we have created a series of CDL Tank Vehicles practice tests for Oregon, updated for December 2024.

There’s no time limit, so you can take as long as you need before selecting an answer. Even when you make a mistake, we provide a detailed explanation of the correct answer, allowing you to understand the reasoning behind the question at hand before proceeding to the next one. Once you consistently obtain passing scores during your training sessions, you are probably ready to take the official Tank Vehicles knowledge exam.

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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 OR 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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