Based on 2024 AL commercial driver's license manual
Free Alabama CDL Air Brakes Test 2024
This test will allow you to review your knowledge of air brakes in order to receive a CDL without a certain restriction, which will allow you to drive commercial vehicles with air brakes.
Each of our 30 multiple-choice questions is based on the Alabama Commercial Drivers License Manual and applicable Alabama laws. Each question is carefully written based on those you will find on the real DMV exam, and includes a hint and explanation, which you should review carefully so that you can answer more questions on these topics.
Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
Triple-checked for accuracy
What you need to know
9 min to complete
Available in EN and ES
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.
Ensuring the accuracy and quality of our program is paramount. Learn more about our rigorous standards in our Commitment to Accuracy article.
Which vehicles must have low air pressure warning signals?
Spring brakes are
Under which conditions are front wheel brakes good?
How can you tell if your vehicle is equipped with an antilock braking system (ABS)?
Which of the following are true about a dual air brake system?
Slack adjusters are
How would you check your truck's slack adjusters?
What is the best way to test your vehicle's low air pressure warning signal?
What is the best way to test if your vehicle's spring brakes come on automatically?
After the initial drop, the maximum acceptable leakage rates per minute are
An antilock braking system (ABS)
Which of the following can cause brakes to fade or fail?
How do brakes work on a long, steep downgrade?
When should you use the parking brake?
When should you drain your air tanks?
Which of the following is NOT part of the braking process when you're driving a tractor-trailer combination vehicle with an antilock braking system (ABS)?
Which of the following will be true about your brake function if your antilock braking system (ABS) fails?
Which of the following should you do before leaving your vehicle unattended?
Which of the following is NOT part of the air brake system?
Which of the following is NOT part of the drum brake?
At what measurement is the safety valve USUALLY set to open?
The tractor protection valve
In Alabama, why must you pass a knowledge test on air brakes?
The low air pressure warning signal will come on before the pressure in the air tanks falls below
A low pressure warning signal is required on
All vehicles equipped with air brakes have
With air brake-equipped vehicles, the parking brakes should be used
The use of air brakes on a downgrade is only a supplement to the
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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 ZakhareuskiUpdated 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.
