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OR CDL Air Brakes Marathon

Need one final boost? This Oregon CDL Air Brakes Marathon is a super-challenging practice test that contains a combination of all 183 questions that we have available for this OR endorsement. If you make a mistake, we’ll remember that question and will display it to you again at the very end of the Marathon 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”. Give it your best shot!

Perfect for

  • First-time OR CDL and CLP applicants
  • CDL holders adding endorsements
  • OR CDL renewal applicants
OR commercial driver's license

What to expect on the actual exam

How many questions25
How many correct answers to pass20
Passing score80%
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