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

Free OK CDL Tanker Vehicles Practice Test 2024

Test your knowledge of tankers with our Oklahoma CDL Tank Vehicles endorsement practice tests. This tool has been designed to help you familiarize yourself with the questions you’ll encounter at the SOK location. Each practice test consists of 20 questions based on the Tank Vehicles section of the official 2024 CDL manual (Oklahoma CDL Handbook 2024). With unlimited attempts, you can train as often as you want, being limited only by your own schedule. To maximize results, we recommend creating a daily routine consisting of multiple training sessions.

It is easier to retain important information with repetition. Consistency is always preferred over intensity, and becoming a tanker driver in Oklahoma is a long but rewarding journey. Arm yourself with a lot of patience and take small steps towards achieving your career goals. One day, you’ll pull up at the Oklahoma City Terminal in an empty tanker, waiting to be loaded with 7,000 gallons of fuel. During this time, you might want to mentally recall the various aspects of tanker driving, which you have successfully memorized in your learning phase.

Liquid surge can cause a shift in weight due to the movement of liquid inside the tank. You must drive smoothly and reduce speed ahead of sharp turns. During winter months, ice can pose a major challenge even for the most experienced commercial drivers. Stopping distance, which is already long in a tanker truck, can increase exponentially if the road is slippery. That’s why it is crucial to master the controls of your vehicle before you venture out into the Sooner State, especially if your tanker is loaded with hazardous materials. Because such cargo can be dangerous to humans and the environment, you’ll need a HazMat (H) endorsement to qualify for such jobs. Your CDL will include the combined HazMat and Tank Vehicle (X) endorsement.

As you train with our practice tests, remember your final goal: becoming a professional tanker driver who successfully handles the responsibility of transporting liquid or gaseous cargo. The Tank Vehicles endorsement knowledge test is just a piece of the puzzle. Passing it with a score of 80% or above completes the bigger picture, which sees you behind the wheel of an actual tanker, enjoying a fulfilling and rewarding career.

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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 OK SOK 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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