Based on 2024 OH commercial driver's license manual
Free Ohio CDL Air Brakes Test 2024
Today, you will have an opportunity to not only become a safer commercial driver, but to also get a less restricted CDL in the state of Ohio. In order to have CDL without the air brakes restriction, you must correctly answer exam questions about air brakes. This 30-question practice exam, which is based closely on practice questions directly from the Ohio Commercial Driver License Handbook, will allow you become comfortable not only with the format of the exam (multiple-choice) and the subject matter, through answering questions and reading each explanation that comes with the questions. Soon, you will be able to receive the score that you want on your air brakes exam and you’ll be a safer, less limited Ohioan commercial driver, so good luck!
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
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Which vehicles must have low air pressure warning signals?
Which of the following is NOT part of the drum brake?
When should you drain your air tanks?
Which of the following should you do before leaving your vehicle unattended?
What is the best way to test if your vehicle's spring brakes come on automatically?
How do brakes work on a long, steep downgrade?
Slack adjusters are
How would you check your truck's slack adjusters?
Under which conditions are front wheel brakes good?
If the air tanks are not drained,
How can you tell if your vehicle is equipped with an antilock braking system (ABS)?
The tractor protection valve
The purpose of a supply pressure gauge is
An antilock braking system (ABS)
Which of the following is NOT part of the air brake system?
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?
What is the best way to test your vehicle's low air pressure warning signal?
Which of the following can cause brakes to fade or fail?
At what measurement is the safety valve USUALLY set to open?
After the initial drop, the maximum acceptable leakage rates per minute are
Which of the following are true about a dual air brake system?
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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Written by Andrei ZakhareuskiUpdated over a week ago
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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.
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