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

Free Oklahoma CDL HazMat Practice Test 2024

As Oklahoma has been named the “best place in the world to do business in oil and gas” by the Frasier Institute in 2012, it is no surprise that the state needs flexible commercial drivers who have their Hazardous Materials (HazMat) endorsements to both carry these loads and benefit from this industry. Today, you will take a practice test that brings you one step closer to gaining this flexibility and being able to carry more dangerous loads safely, preparing you for your real HazMat exam. Our writers have created this 30-question multiple-choice practice test based closely on information from the Oklahoma Commercial Driver License Manual, and the highlighted review questions that the manual’s writers indicated may be on your exam. Unique to our exams are our carefully written question explanations, which are designed to help you better understand the subject of each question, so that you can answer future questions about each subject correctly the very first time. Read these explanations carefully, use each question’s hint if you should need it, and feel free to retake this practice test as often as necessary until you comfortably achieve a passing score that may help ensure success for the real exam (80% or higher recommended). Good luck with your future HazMat endorsement, and drive safely!

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

What you need to know

7 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 OK SOK exam

30

questions

24

correct answers to pass

80%

passing score

List of questions (classic view)

  1. What is a technical name?
  2. Do you need to stop before a railroad crossing if you are hauling 100 pounds of Division 4.3 materials?
  3. If you are already carrying 100 pounds of silver cyanide, what precautions must you take if you are given papers at a dock to carry 100 cartons of battery acid?
  4. What is the purpose of a driver placarding his or her vehicle?
  5. Besides the shipping papers and the packages, the other two places where the hazardous material identification number must appear are
  6. Which of the following is NOT an acceptable type of marking for hazardous materials?
  7. Which of the following are necessary qualifications for non-bulk packaging?
  8. What are the major differences between cargo tanks and portable tanks?
  9. Which of the following hazard classes uses a transport index to determine how much of it can be loaded on a single vehicle for transport?
  10. In what location must you keep your shipping papers that describe any hazardous materials?
  11. How often should you check the tires on a placarded trailer that has dual tires?
  12. When shippers package the material, they are trying to
  13. A safe haven is
  14. Which of the following materials are acceptable floor liners for transporting Division 1.1 or 1.2 materials?
  15. What action should you take if you discover your hazardous materials shipment leaking at a rest stop but there is no phone available?
  16. You must NEVER smoke or perform any activity involving fire within 25 feet of
  17. If you are carrying Division 1.2 or 1.3 materials, how far away must you park from a bridge, tunnel, or building?
  18. A placarded vehicle must carry a fire extinguisher with a minimum rating of
  19. If you are carrying Division 1.2 or 1.3 materials, how far away must you park from the traveled portion of the roadway?
  20. Where are the two main places that the hazardous material identification number appears?
  21. Which of the following three hazard classes should NOT be placed into a temperature-controlled trailer (one with a heater/air conditioner unit)?
  22. To determine if you need to use placards, you do NOT need to know
  23. Your engine runs a pump when you are delivering compressed gas. After finishing the delivery, when should you turn off the engine?
  24. Cargo tanks are
  25. The Emergency Response Guidebook (ERG)
  26. A hazard class name or ID number may not be used to describe
  27. If there is an accident involving hazardous materials, who reports it to the proper government agency?
  28. Carriers must give each driver who transports Division 1.1, 1.2, or 1.3 materials
  29. The hazardous material identification numbers must be displayed on portable tanks, cargo tanks, and other bulk packaging. The regulations require black _______ numbers.
  30. A vehicle placarded for hazardous materials must have placards on ____ sides.

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