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

Free Texas CDL HazMat Practice Test 2024

Texas is an enormous state with an equally enormous range of commercial driving needs, so receiving your Hazardous Materials (HazMat) endorsement is one way to ensure that you are qualified to meet a wider range of them. Today, you will be able to take a free practice test which will help you get more prepared for your HazMat endorsement exam. These 30 multiple-choice questions have been written based on the information and important review questions that the writers of the Texas Commercial Motor Vehicle Drivers Handbook have indicated may be on your real exam. Each question has a hint, to be used if you should need it, and an explanation. We recommend that you read each explanation closely and carefully, as they have been written to provide you with even more information so you can answer future questions that may be worded differently correctly. Return and retake this practice test as often as you need to to achieve a passing score consistently (80% or higher recommended). Good luck today with practice, in the future on the exam, 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 TX DMV exam

30

questions

24

correct answers to pass

80%

passing score

List of questions (classic view)

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