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Based on official California exam questions

Free California CDL HazMat Endorsement Practice Test 2025

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

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.

7 min to complete
Available in EN and ES
CA commercial driver's license
Real exam-style pitfalls you’ll practice:
Common Traps
Distractors
Trick Wording
Double Negatives

Authored and curated by Steven Litvintchouk, M.S.

Chief Educational Researcher (ACES member)
Methodology & Editorial Policy
Last verified for accuracy: October 2025 (reviewed weekly)

What to expect on the actual CA permit test

30

questions

24

correct answers to pass

80%

passing score

Real California drivers who passed first try

Verified student reviews • Shared with permission

Passed 1st time. EZ-PZ.
For the CA hazmat knowledge test, there were only 1 or 2 questions I hadn't seen here. Otherwise, Driving-Tests had all/nearly all of the questions that were on my test.
E
Best online study guide.
I just want to say thank you. I studied all the material and found everything very thorough and informative. When I went for my first attempt at my DMV for a Commercial Class A permit yesterday I felt confident. I also wanted to add Doubles/Triples and Tankers endorsements. I ended up taking about 7 tests total and only missed a total of 5 questions between all tests combined. Now I will add my HazMat once I get my background check results in a few days. If you are considering which course to purchase to prepare yourself for your tests, Driving Tests has your back!
BR
Use them.
I used this guide for 4 hours each day for 2 days and I passed Every written CDL California offered. Gen Knowledge, Air Brakes, HazMat, Tanker, and Combination Vehicle. Not only that but I passed them all within 45 minutes of sitting down to take them. I highly recommend using them for CDL study. They taught me what I needed to know and that's what counts.
A
I always stressed about the Hazmat test….
I always stressed about the Hazmat test! But after this site I was prepared. Almost the same the questions that were on The CA Hazmat test. I studied and passed 1st try!
FK
I passed the California HazMat test.
I passed the California HazMat test on the first try. driving-tests.org, your website walks the talk.
HL
Studied for ca hazmat endorsement….
Studied for ca hazmat endorsement renewal for a couple of hours by taking all of the supplied practice tests & marathon exams & crushed the dmv exam. Almost all questions were identical, I would highly recommend this if you don’t want to study the entire Cal book
CP

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