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DE CDL Air Brakes Marathon

Got a couple of hours to spare? This Delaware CDL Air Brakes Marathon is a super-challenging practice test that contains a compilation of all 182 questions that we have available for this DE 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”. It might take some time, but you can do this!

Perfect for

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

What to expect on the actual DE DMV exam

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

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More DE CDL Air Brakes Resources

Helpful resources

DE CDL Handbook

View the most recent (2024) official DE CDL Handbook.

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DE CDL Practice Test App

Download our free iOS or Android app and practice for your driving test offline or on the go.

CDL Genie app

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10 Things You Should Do Before Your Driving Knowledge Exam (PDF)