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  • Updated for December 2024
  • Based on 2024 OK commercial driver's license manual

OK CDL Hazardous Materials (HazMat) Marathon

Ready for something a little different? This Oklahoma CDL Hazardous Materials (HazMat) Marathon is a lengthy practice test that contains a combination of all 192 questions that we have available for this OK endorsement. If you select a wrong answer, we’ll remember that question and will display it to you again at the end of the exam until you’ve answered that question correctly. In other words, the Marathon will cycle through your missed questions until you answer each one correctly. You must make a 100% to pass. We suggest you attempt this one after you have practiced the state’s “regular” tests, but before the “Exam”. Delivers some serious studying power! Do your best to complete this mega test!

  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
This test is a Premium member exclusive. You'll get

All 650 exam-like questions specific to Oklahoma

Interactive learning with AI personal tutor

Unique 360° Virtual Road Simulations

Get your money back if you don’t pass

About this test

12 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 OK SOK exam

30

questions

24

correct answers to pass

80%

passing score

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