logo-cdl_v2
Get Pro
Menu

Take CDL Air Brakes Practice Test now!

Our full-length CDL Air Brakes practice test is the perfect tool to ensure you're fully prepared for the real test. Designed to closely replicate the actual exam, it gives you the confidence to pass with ease.

Choose your state

FAQs

01

What’s on the CDL Air Brakes Test?

plus

The CDL Air Brakes Test covers key topics related to the air brake system in commercial vehicles. Here’s what you can expect:

  • Parts of the air brake system: You’ll need to know the key components, such as the compressor, air tanks, valves, and brake chambers, and how they function together.
  • Dual air brake: This section focuses on understanding the dual air brake system, which ensures safety by using two separate air systems.
  • Inspecting air brake systems: You'll be tested on how to properly inspect air brake systems, including checking for leaks, air pressure, and brake components.
  • Using air brakes: You must demonstrate how to effectively use air brakes, manage air pressure, and recognize warning signals like low air pressure.
02

How hard is the CDL Air Brakes Test?

plus

The CDL Air Brakes Test can be challenging if you're not familiar with the air brake system. It requires understanding technical details about air brake components, how they function, and how to properly inspect and use them. With proper study and practice, it is manageable.

    03

    How many questions are on the CDL Air Brakes Test?

    plus

    The CDL Air Brakes Test typically consists of 25 multiple-choice questions, depending on your state.

      04

      How many questions can you miss on the CDL Air Brakes Test?

      plus

      You can usually miss up to 4 questions on the CDL Air Brakes Test, depending on your state’s passing requirements, which are typically around 80% correct answers.

        05

        How do I study for the CDL Air Brakes Test?

        plus

        To study for the CDL Air Brakes Test, review the CDL Air Brakes section in your state’s CDL manual, focus on key concepts like air brake components, inspection procedures, and how to use air brakes effectively. Taking practice tests is also a great way to prepare and assess your knowledge.