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Air Brakes

The Air Brakes CDL permit test preparation tools are designed to help you study for the Air Brakes written test you will take if you want to get a CDL with Air Brake Endorsement.

The Air Brakes CDL permit knowledge test is for commercial drivers if your vehicle has air brakes, including air over hydraulic brakes.

The tools below contain information you need to learn about air brakes. If you want to drive a truck or bus with air brakes, or pull a trailer with air brakes, you must take a test on this information to get a CDL. These written tests are usually administered at your local DMV office.

Below you will find two helpful tools.  Both are designed to help you learn the CDL concepts by using a “question and answer” format:

Course Content – This is another resource that is in quiz format.  Quizzes are broken into individual topics.  As you take the quizzes, you will see the correct answer.  Use the quizzes to learn important CDL concepts for the topic.

Practice Tests – Practice tests have audio available so you can listen to the questions.  You will be asked specific questions that may be on the CDL written test you will take to get your CDL permit or Endorsement. The tests give you the correct answer so that you can learn as you test.

The test questions are very similar to the questions you will see on the state CDL permit written test.

The following topics are included in Air Brakes:

  • Air Brake System Parts

  • Dual Air Brake Systems

  • Inspecting Air Brakes

  • Using Air Brakes

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