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  • Updated for June 2025
  • Based on 2025 CA commercial driver's license manual

Free California CDL HazMat Endorsement Practice Test 2025

California. The Golden State. Since you’re visiting this site, you must be interested in the golden opportunities available once you’ve added the Hazardous Materials (Hazmat) endorsement to your Commercial Driver’s License (CDL). California allows drivers 18 to 20 years of age to obtain this endorsement (keep in mind though that federal CDL laws only permit such drivers to transport cargo within the state). According to 2025 driverreach.com, the Hazmat endorsement not only broadens a driver’s marketability but can result in higher pay and higher recruitment potential from companies!

The Hazmat endorsement permits drivers to transport materials that the U.S. government has deemed hazardous. These materials range from explosives to certain types of fuel and industrial chemicals to radioactive materials and infectious substances. That said, the most important objective of this endorsement process is to ensure your safety and protect the people and environment in your driving area.

To add this endorsement, you’ll need to pass a Transportation Security Administration (TSA) fingerprinting and background check and the DMV knowledge test. The knowledge test includes topics like federal regulations, substance handling, material packaging, quantity limits, and transport configurations for hazardous materials. You’ll need a score of 80% on California’s knowledge test, which is made up of 30 questions (24 out of 30 answers must be correct) (California CDL Handbook 2025).

Regarding the benefits available with this endorsement in the Golden State, there are multiple industries with cargo transport that require a Hazmat endorsement, including chemical manufacturing, petroleum and energy (Chevron is headquartered in California), and pharmaceuticals (both Amgen Inc. and Gilead Sciences are headquartered here). This sounds amazing and a little daunting, right? It doesn’t have to be complicated at all.

Our online California DMV Hazmat Endorsement practice tests are strategically designed to circumvent all the extraneous information you’ll find, get straight to what’s relevant, and actually mimic what you will face on the official DMV test. Ready to begin? The first thing you’ll want to do is apply for your fingerprints and background check. Because the results can take weeks to arrive, you can use that wait time to study with our practice tests. Once you feel confidently prepared, you’ll visit the DMV with the necessary documents, pay any related fees, and confidently take the test.

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CA 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

4.35 out of 5 • 511 votes
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.
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 CA DMV exam

30

questions

24

correct answers to pass

80%

passing score

List of questions (classic view)

  1. Which of the following materials is an acceptable floor liner for moving Division 1.1 or 1.2 materials?
  2. The Emergency Response Guidebook (ERG)
  3. Besides the shipping papers and the packages, the other two places where the hazardous material identification number must appear are
  4. Which hazard classes must you NEVER smoke or perform any activity involving fire, within 25 feet of?
  5. If you are carrying Division 1.2 or 1.3 materials, how far must you park from the traveled portion of the roadway?
  6. A placarded vehicle must carry a fire extinguisher with a minimum rating of
  7. In what location must you keep your shipping papers that describe any hazardous materials?
  8. A driver placards his or her vehicle
  9. What are the major differences between a cargo tank and a portable tank?
  10. A safe haven is
  11. Which of the following is a necessary qualification for non-bulk packaging?
  12. At a rest stop, you discover that your hazardous materials shipment is leaking but there is no phone available. What do you do?
  13. How far must you park from a bridge, tunnel, or building if you are carrying Division 1.2 or 1.3 materials?
  14. Do you need to stop before a railroad crossing if you are hauling 100 pounds of Division 4.3 materials?
  15. What is a technical name?
  16. Your engine runs a pump when you are delivering compressed gas. When should you turn off your engine?
  17. If you are carrying 100 pounds of silver cyanide and you are given papers at the shipper's dock to carry 100 cartons of battery acid as well,
  18. 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?
  19. Which of the following hazard classes should NOT be placed into a temperature-controlled trailer (one with a heater/air conditioner unit)?
  20. Which of the following is NOT an acceptable type of marking for hazardous materials?
  21. When shippers package the material, they are trying to
  22. Cargo tanks are
  23. What are the two main places on which the hazardous materials identification number appears?
  24. To determine if you need to use placards, which of the following do you NOT need to know?
  25. How often should you check the tires on a placarded trailer that has dual tires?
  26. For the hazard classes in Placard Table 2, you must use placards only if you are transporting a total of
  27. If an incident involving hazardous materials results in more than ________ of estimated property damage, you or your employer must phone the National Response Center to report it.
  28. A shipping paper for hazardous materials must include
  29. Foodstuffs for animal or human consumption must not be loaded in the same cargo space with
  30. If your vehicle is placarded, you must stop _______ feet before the nearest rail at a railroad crossing.
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