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Based on official District of Columbia exam questions

DC CDL Hazardous Materials (HazMat) Marathon

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

Fasten your seat belt for one last wild ride of studying! This District of Columbia CDL Hazardous Materials (HazMat) Marathon is a monster of a practice test that contains a mix of all 192 questions that we have available for this DC endorsement. If you make a mistake, 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”. It might take some time, but you can do this!

12 min to complete
Available in EN and ES
DC commercial driver's license
Real exam-style pitfalls you’ll practice:
Common Traps
Distractors
Trick Wording
Double Negatives
This test is a Premium member exclusive. You'll get

All 650 exam-like questions specific to District of Columbia

Interactive learning with AI personal tutor

Unique 360° Virtual Road Simulations

Get your money back if you don’t pass

Verified for accuracy: October 2025

Reviewed by Steven Litvintchouk, M.S.
Chief Educational Researcher (ACES member)
Methodology & Editorial Policy

What to expect on the actual DC exam

30

questions

24

correct answers to pass

80%

passing score

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