Free Arizona CDL Air Brakes Test 2025

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

Do you want to operate commercial motor vehicles (CMVs) with air brakes? Our Arizona MVD CDL Air Brakes Practice Tests are designed to help you pass your knowledge exam on the first attempt. Failing the air brakes knowledge test in Arizona results in a one-day waiting period and a retest fee. Until you pass, your CDL will include the restriction “L,” preventing you from operating CMVs with air brakes. Given Arizona’s diverse terrain, from high-heat deserts in the south to steep mountain descents (especially between Phoenix and Flagstaff), air brakes are essential for maintaining vehicle control. Major highways, including I-10, I-40, I-17, and Routes 60 and 87, are crucial for freight transport and present diverse challenges that rely heavily on air brakes and qualified drivers. Since most semi-trucks and tractor-trailers rely on air brakes, with this restriction, your job opportunities will be significantly limited.

Industries across the Grand Canyon State rely on drivers with the air brake qualification. Some key industries include tourism, mining, agriculture, and aerospace. Major companies requiring the air-brake qualification include Freeport-McMoran and Asarco in the mining sector and Knight Transportation, Swift Transportation, and XPO Logistics in the logistics sector. Additionally, charter bus companies like Greyhound Lines, Arrow Stage Lines, and Tour West America rely on air brakes-qualified drivers, as does virtually every school district in the state that operates full-size school buses. Having an “L” restriction on your CDL prevents you from legally operating CMVs with air brakes, making the above-listed jobs unattainable.

Our CDL Air Brakes Practice Tests help you master essential concepts and pass your official MVD Air Brakes Knowledge Test. The information you learn will also be useful as you practice inspecting and operating CMVs to pass your skills test. The skills test includes inspection, hands-on testing for air pressure and leaks, and air brake-equipped vehicle operation. The written Air Brakes knowledge test consists of multiple-choice questions based on the state’s CDL manual (Arizona CDL Handbook 2025) and requires a score of at least 80% to pass.

Our Practice Tests are designed to mimic what you will face on the official knowledge test and offer real-time feedback on all responses. This proven approach enhances retention, reinforces key concepts, and ensures you’re prepared to confidently pass the test on your first attempt.

4.48 out of 5 • 31 votes.

9 min to complete

Available in EN and ES

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What to expect on the actual AZ MVD exam

questions

correct answers to pass

80%

passing score

Helpful links

AZ DMV website

Official Arizona CDL manual (2025)

More AZ MVD Written Exam Resources

AZ CDL Air Brakes Test (you are here)

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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.

FREE Arizona CDL Air Brakes Test

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