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Oklahoma CDL HazMat Practice Test 5 2025

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

The HazMat (Hazardous Materials) endorsement is required by the states for drivers of commercial vehicles. The purpose of the HazMat endorsement is to ensure that drivers are aware of the hazards associated with the transportation of hazardous materials. With this HazMat practice test, you will get plenty of practice questions that are similar to the official Oklahoma CDL exams. These questions are designed to give you an idea of what to expect when you take the real test. You will get instant feedback after each question you answer, and you will get to see why your answer is correct or incorrect. There is a review section where you can go back and review all the questions you got wrong. This practice test will help you prepare for your HazMat endorsement test. It will help you learn the same information that is on the official CDL test. Good luck!

Real exam-style pitfalls you’ll practice:
Common Traps
Distractors
Trick Wording
Double Negatives
Oklahoma CDL HazMat Practice Test 5 2025
Commercial Driver's License
Based on official OK exam questions
Steven Litvintchouk, M.S., Chief Educational Researcher at Driving-Tests.org

Authored and fact-checked by Steven Litvintchouk, M.S.

Chief Educational Researcher, Driving‑Tests.org (ACES member)
Last verified for accuracy on
Methodology & Editorial Policy

10 min to complete
Available in EN and ES

What to expect on the actual OK permit test

30

questions

24

correct answers to pass

80%

passing score

Real Oklahoma drivers who passed first try

Verified student reviews • Shared with permission

The Best Website for Preparing for Driving Knowledge Tests.
I had to take a Entry-level Driver Training Course (ELDT) before I could take the actual Hazmat Endorsement knowledge test. So, I turned to Driving-Tests for help, not only did they provide the study materials I needed to pass the Hazmat Endorsement knowledge test, they're listed in the Training Provider Registry (TPR), so, they're approved by the Federal Motor Carrier Safety Administration (FMCSA) to submit training completion certificates to the TPR. Needless to say, after successfully completing their ELDT course, they submitted my completion certificate to the TPR. I was then able to take my Hazmat Endorsement knowledge test and I passed it on my first attempt!
MD
Saved me time and money!
I was able to get my Hazmat ELDT certificate in under 1 day. Not only was it extremely fast, but I actually feel much more knowledgable on the subject. Much better alternative to spending thousands and going to a brick and mortar school!
AG

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