Free Indiana CDL Air Brakes Test 2024

Your knowledge of air brakes will be tested today, to prepare you for the Indiana BMV air brakes exam and to help you become a safer driver. You will be answering 30 multiple-choice questions, based on the knowledge you’ve gained from the Indiana CDL Manual. Along with each question, you’ll find a hint and an explanation. You should read each, so that you will be able to answer further questions about these topics on the real BMV exam. It is recommended that you carefully read each question’s explanation to gain some further insight, to receive a higher score on the real CDL air brake exam. Practice as often as you need to, and good luck on your exam!

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Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
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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.

What to expect on the actual IN BMV exam

questions

correct answers to pass

80%

passing score

Helpful links

IN DMV website

List of questions (classic view)

How would you check your truck's slack adjusters?
At what measurement is the safety valve USUALLY set to open?
How can you tell if your vehicle is equipped with an anti-lock braking system (ABS)?
How do brakes work on a long, steep downgrade?
Slack adjusters are
Spring brakes are
After the initial drop, the maximum acceptable leakage rates per minute are
The purpose of a supply pressure gauge is
The tractor protection valve
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?
When should you drain your air tanks?
When should you use the parking brake?
Under which conditions are front wheel brakes good?
Which of the following can cause brakes to fail or fade?
If the air tanks are not drained,
Which of the following is NOT part of the air brake system?
Which of the following is NOT part of the braking process when driving a tractor-trailer combination vehicle with an anti-lock braking system (ABS)?
Which of the following is NOT part of the drum brake?
Which of the following are true about a dual air brake system?
Which of the following will be true about your brake function if your anti-lock braking system (ABS) fails?
Which of the following should you do before leaving your vehicle unattended?
Which vehicles must have low air pressure warning signals?
An anti-lock braking system (ABS)
Why must you study air brakes in the state of Indiana?
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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