Get Ready for the CDL Air Brake Test With DoNotPay

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How To Ace Your CDL Air Brake Test Hassle-Free

Are you a prospective commercial driver’s license carrier who wants to drive a truck equipped with air brakes? Passing the air brake test should be on your checklist if you want to remove the restriction from your CDL.

DoNotPay can help you prepare for the CDL air brake test fast and easy. Take a few DMV practice tests on our platform and pass your written driving exam effortlessly.

Crucial Aspects of the Commercial Driver’s Licence Test

Passing the CDL test is an obligatory step for drivers who want to operate a commercial motor vehicle. Most states require the candidates to be at least 21 when applying for the test. The exam you take will depend on the class of the vehicle you want to operate—Class A, B, or C.

Each CDL test consist of three sections:

  1. General CDL test—obligatory
  2. Endorsement tests—optional
  3. Air brake test—optional

To land better job opportunities, commercial drivers should consider obtaining one or multiple endorsements on their license:



Vehicles that transport hazardous materials


Tank motor vehicles that contain liquids and gasses


Commercial motor vehicles for 16 and more passengers


School busses (with a P endorsement)


Double and triple trailers


Tank vehicles that transport hazardous materials

CDL Restrictions Explained

Removing your CDL restrictions is another important step to getting a better-paid job. You can do so by taking and passing the required tests. The following table shows the basic restrictions found in any American state:



Drivers can’t operate a commercial motor vehicle with a manual transmission


CDL carriers can’t drive a vehicle equipped with air brakes


Chauffeurs with an M restriction can only drive:
  • School busses
  • Class B passenger vehicles
  • Class C passenger vehicles


Drivers can only operate:
  • School busses
  • Class C passenger vehicles


Commercial drivers with an O restriction can’t drive a Class A vehicle with a fifth-wheel connection


A V restriction is given to the chauffeurs with:
  • Vision and hearing impairments
  • Seizures
  • Diabetes


Chauffeurs with a Z restriction can’t operate a vehicle with a full air brake system

What Is the Air Break Test for CDL?

The air brake CDL test is designed to examine the chauffeurs’ knowledge of the air brake system in commercial motor vehicles. It’s crucial to know how to operate and maintain the brakes properly to ensure everyone’s safety.

The L restriction will be removed from your license if you:

  • Pass the written test
  • Complete the road test
  • Know how to check if the air brakes work well
  • Manage to identify all the components of the air brake system

How Many Questions Are on the CDL Air Brake Test?

The CDL air brake test consists of 25 questions that usually cover the following topics:

  • Use of air brakes
  • Benefits of the air brake system
  • Features and properties
  • Parts of the air brake system
  • Main differences between traditional and air brakes

You can take the air brake test as part of the CDL exam or pass it separately in the future.

Ways To Prepare for the CDL Air Brakes Test

Preparation is crucial if you want to pass your CDL air brake test on the first try and be ready to accept a job offer. You will feel less nervous when taking the test if you prepare well at home. You can study for the exam in a few ways:

  • Read an official DMV manual
  • Prepare some flashcards
  • Attend online and offline courses
  • Take practice tests

Not a Big Fan of Studying? Try Taking the Air Brakes Practice Test!

Reading a DMV CDL manual at least once should be your first step, even if you don’t like studying. Once you finish reading the handbook, you can take a few CDL air brake practice tests. Your study sessions will be more dynamic and efficient.

Prep tests offer an array of questions mostly drawn from the handbook and previous exams. By responding to a few sample questions, you’ll experience the real exam atmosphere. You will receive immediate feedback, which will help you memorize the correct response more easily.

You can find the CDL air brake practice test on one of the following platforms:

DoNotPay—The Most Practical Way to Take the CDL Air Brakes Practice Test

DoNotPay is the most reliable option for individuals who want to prepare for their CDL test in Ohio, Florida, Texas, or any other American state. We provide a user-friendly platform with a comprehensive database of practice tests. To prepare for the CDL or any other government test with DoNotPay, follow these steps:

  1. Access your account from any
  2. Enter the name of the test
  3. Pick the test you want to practice
  4. Choose from 10, 20, or 30 questions for the test length

Should your answer to any question be incorrect, you’ll have a chance to correct it on the spot. You can retake the entire test if your score isn’t satisfactory.

DoNotPay can assist you in scheduling the exam with your local DMV in any state.

Learn About Other Government Tests You Can Practice for With DoNotPay

Taking care of your commercial and non-commercial driving exams is not the only task we can help you with. Thanks to DoNotPay, you can get ready for the Armed Services Vocational Aptitude Battery (ASVAB) exam and achieve an amazing score.

DoNotPay offers practice tests for any government exam, including:

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