Based on 2024 OK commercial driver's license manual
Free Oklahoma CDL Air Brakes Test 2024
As an Oklahoma truck driver, the best CDL to build your career is one with the fewest amounts of restrictions, which means taking an exam to drive commercial vehicles with air brakes. To get a CDL with an air brakes qualification, practice exams are the key to a great score on the real exam. This 30 multiple-choice question quiz, with carefully written explanations based on exactly what the Oklahoma Driver License Manual’s writers state you must know, cover all the basics and then some about air brakes, so take it as many times as you need to get a perfect score, and you’ll be on your way to that less restricted CDL today!
Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
Triple-checked for accuracy
What you need to know
4.71 out of 5 • 14 votes
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.
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Which of the following are true about a dual air brake system?
At what measurement is the safety valve USUALLY set to open?
Which of the following will be true about your brake function if your antilock braking system (ABS) fails?
Why must you pass a knowledge test on air brakes?
How would you check your truck's slack adjusters?
Spring brakes are
If the air tanks are not drained,
After the initial drop, the maximum acceptable leakage rates per minute are
Which of the following should you do before leaving your vehicle unattended?
Which of the following is NOT part of the drum brake?
When should you use the parking brake?
Which of the following is NOT part of the air brake system?
How do brakes work on a long, steep downgrade?
An antilock braking system (ABS)
Which of the following can cause brakes to fade or fail?
Which vehicles must have low air pressure warning signals?
When should you drain your air tanks?
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 is NOT part of the braking process when you're driving a tractor-trailer combination vehicle with an antilock braking system (ABS)?
What is the best way to test if your vehicle's spring brakes come on automatically?
What is the best way to test your vehicle's low air pressure warning signal?
The tractor protection valve
The purpose of a supply pressure gauge is
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.
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