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Free Illinois CDL Air Brakes Test (IL)

  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
  • Based on 2024 IL commercial driver's license manual
  • Updated for July 2024
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
Commercial Driver's License

About this test

9 min to complete
Available in EN and ES

Today, your knowledge of air brakes will be tested. THis will help you do better on your upcoming DMV air brake exam. The 30 multiple-choice questions included are based on information from the Illinois Commercial Drivers License Study Guide, and are meant to closely simulate the exact types of questions you will find on your DMV exam. Read each question as well as the accompanying answer explanation carefully, so that you will be prepared if the exam asks about these topics in a different manner. Keep practicing, good luck, and drive safely!

To fully understand the Air Brakes endorsement process and to master the material for the written exam, explore our detailed guides on the Air Brake endorsement and the Air Brakes written test.

What to expect on the actual IL CDL exam

25

questions

20

correct answers to pass

80

passing score

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