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CDL Air Brakes Practice Test

Take our CDL air brakes practice test to prepare for your upcoming exam. This is a popular endorsement test that many individuals will have to take.

The air brake endorsement is needed for all individuals who plan on operating a vehicle with air brakes. Find questions that cover topics you will be tested on below.

Summary: Take our air brake practice test below. To prepare for other CDL exams, visit our CDL prep home.

CDL Air Brakes Practice Test

Take one of the five practice exams below. Make sure to review the answer explanations after answering the air brake questions.

The answer explanations can help you understand complex concepts and learn from your mistakes.

If you are also preparing for another endorsement test, use our CDL practice questions to focus on other subjects.

CDL Air Brake Test Overview

Anyone who intends to operate a vehicle with air brakes will need to earn their air brakes endorsement. The air brakes endorsement is very common as many truck drivers add this to their license.

There are two parts to the air brakes endorsement exam:

  1. Written portion
  2. Skills portion

The written portion will vary from state to state, but you can generally expect the following:

  1. 25 questions
  2. Multiple-choice questions
  3. Need a passing score of 80% or higher

You can expect to be tested on some of the following topics when taking the written test:

  1. Air brake system parts
  2. Dual air brake systems
  3. Inspecting air brakes
  4. Using air brakes

You can expect to be asked to perform the following tasks when taking your skills test on the CDL air brake test:

  1. Using appropriate pressure
  2. Gauging air pressure
  3. Building air pressure
  4. Releasing brakes
  5. Testing low air

CDL Air Brakes Exam Overview

Visit our CDL permit test home to find practice exams for other endorsements.

Air Brake Endorsement FAQs

This will vary depending on which state you are in. You can expect to answer around 25 questions on the written portion of the exam. However, some states give fewer questions (20).

You will be taking a written portion and a skills portion. The written portion will be multiple-choice questions while the skills portion will be hands on and include things like building air pressure, releasing brakes, using appropriate air pressure, and other similar tasks.

Anyone who intends to operate a vehicle in which air brakes are used will need to get their air brake endorsement.

Gianni Evangelisti
Gianni has been working in the test prep industry for 6+ years. Gianni has created test prep materials across multiple different exam categories.