CA CDL Air Brakes Practice Test 2025

Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
Based on 2025 CA commercial driver's license manual
Triple-checked for accuracy
Updated for March 2025

To operate vehicles equipped with air brakes in California, you must pass both the Air Brakes knowledge test and a skills test in a vehicle equipped with air brakes. If you are unfamiliar with this process, we recommend studying the official CDL manual (California CDL Handbook 2025). Use this handbook as your primary reference throughout your learning phase. Read it multiple times to ensure a deeper understanding of its content. All 25 questions on the air brakes knowledge test are based on this manual, which is an essential resource issued by the California Department of Motor Vehicles (DMV).
But how can you be sure that you have fully understood the material? Many aspiring commercial drivers only discover their level of preparedness at the DMV location when they take the knowledge test. Instead of relying on luck, you can use our California CDL Air Brakes practice tests to evaluate your knowledge. Each practice test consists of 25 questions and is designed to closely reflect the official written exam. To pass, you’ll need to score at least 80%, but it is entirely normal to fail during your first few attempts. Our practice tests also serve as a valuable educational resource for beginners, and there are several features designed to help you master the subject.
Immediate feedback is provided after each question, including a detailed explanation attached to the correct answer. This feature allows you to identify mistakes and memorize the correct answer before proceeding to the next question. With unlimited attempts available, there is no need to rush your training sessions. With enough preparation, the test day will find you confident that you can pass the knowledge exam.
Don’t let any negative emotions overwhelm you. Use your time wisely, read each question carefully, and think twice before selecting an answer. You may be surprised how many students know the correct answer to a question but end up selecting a different one! Our CDL Air Brakes practice tests not only help you understand how to safely operate vehicles equipped with air brakes but also familiarize you with the content and format of the official knowledge test.

7 min to complete

Available in EN and ES

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What to expect on the actual CA DMV exam

questions

correct answers to pass

80%

passing score

Helpful links

CA DMV website

Official California CDL manual (2025)

More CA DMV Written Exam Resources

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Our commitment to accuracy and quality in our practice tests

Explore our rigorous, multi-tiered verification process that ensures each question mirrors the official manual for unparalleled accuracy.

Written by Andrei Zakhareuski Updated over a week ago

At Driving-Tests.org, we understand the importance of reliable and accurate practice tests to help you prepare for your DMV exam. That's why we've developed a meticulous process to create and continually update our practice questions, ensuring they reflect the most current driving laws and regulations.

Here's an inside look at how we maintain the highest quality in our practice tests.

Content Creation and Verification Process

Alignment with Official Manuals:
Every question we develop is based on the most recent version of each state's official driving manual. Our team regularly monitors each state DMV's website for the latest updates to ensure our practice tests are always aligned with the most current information.
Community Feedback Integration:
We leverage feedback from our vast community of users to understand which topics are most frequently tested. This helps us focus on the areas that are most relevant and beneficial for your preparation.
Expert Content Creation:
Our in-house editor, Steven, who has extensive experience in driver education, crafts each question with precision. He conducts a thorough review of each question against the official manuals to ensure accuracy.
Rigorous Review Process:
Once Steven has finalized a set of questions, our team conducts a joint review session. This second level of scrutiny involves content accuracy, proofreading, and fact-checking to eliminate any errors.
User Feedback Mechanism:
After a question goes live on our site, we keep the lines of communication open. Each question features a feedback button, inviting users to report any issues or errors. This continuous feedback loop allows us to address and rectify any concerns promptly.
Responsive Updates:
In line with our commitment to accuracy, we quickly update our practice questions to reflect any changes in the DMV manuals. Additionally, we update the free electronic copy of the state's driver's license manuals on our site, typically within a few days after the DMV publishes them.

Our thorough quality control process ensures that you have access to practice tests that are as accurate and up-to-date as possible. We believe in the power of well-prepared drivers and are dedicated to providing you with the best study tools to help you succeed on your DMV exam.

CA CDL Air Brakes Practice Test

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