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Ohio CDL HazMat Practice Test 4 2025

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

The HazMat 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. When you need a job that requires the HazMat endorsement, preparing for the CDL knowledge exam is hard. The Ohio CDL manual is overwhelming, filled with information that’s often confusing and hard to remember. You need something where you could supplement the dry information with exam-like practice. This HazMat practice test will help you prepare. We’ve designed it to be the tool that will help you pass the official exam with ease – by covering the same materials that the real exam is based upon. You’ll be getting instant feedback after each question so you’ll know why every answer is correct. The answers are explained with easy-to-follow language. You’ll study at your own pace, and even review specific questions if they give you problems. Good luck!

Real exam-style pitfalls you’ll practice:
Common Traps
Distractors
Trick Wording
Double Negatives
Ohio CDL HazMat Practice Test 4 2025
Commercial Driver's License
Based on official OH 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

9 min to complete
Available in EN and ES

What to expect on the actual OH permit test

30

questions

24

correct answers to pass

80%

passing score

Real Ohio drivers who passed first try

Verified student reviews • Shared with permission

Just finished with 97%!
Took my Ohio sit down test only missed 1. Now have my Hazmat endorsement I really appreciate the course. They got it in the registery as Promised with a link where i could See it. This team does everything they say they will and is 100% NOT a scam or ripoff. Thank you!
KB
Feels like cheating.
This felt like cheating to be honest. I waited at the DMV for 3.5 hours and the lady told me at 1605 that she doesn't think I'll have enough time to take tanker and hazmat. I told her all I needed was 5 minutes. I sat down at 1620 and stood up at 1626 (took an extra minute oops) and told her I was done. She looked at me like I had 3 heads and was amazed that I'd passed so quickly. This program will make you 100% within days.
JR
The perfect course to take for hazmat.
The way it is laid out to learn in segments was great but the most helpful thing for me and I think anyone else that may take the hazmat course is the “Hint” button that help me out a lot! I highly recommend “Driving-Tests.Org
RS
Easily Passed On The 1st Try!
I literally would not have received my HazMat & Tanker endorsements without this program. Practice makes perfect and with the help of this program, I passed my HazMat and Tanker knowledge exams without missing a single question! If you need to learn/study quick for your knowledge tests, this is the program for you! 10/10
C
Best resource to pass any state Cdl hazmat test.
I studied practice tests provided for my state, and those tests was exactly what my state administered. Scored 100% with ease!
WH

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