Free Michigan CDL Air Brakes Practice Test 2022

Do you need an Air Brakes endorsement or an L endorsement for your commercial driving license? The Michigan CDL Air Brake test has some differences from other endorsements because your license will receive a mark of restriction if you fail the test. So having good preparation before exam day is very necessary. To ensure that our questions are relevant, all of our CDL practice test packs are based on the Michigan CDL Manual. Each question has a detailed explanation for you to thoroughly learn the format and the topic. Don't be afraid of having a restriction on your license. Let’s try our Michigan CDL Practice Test to get ready to pass the Michigan CDL Air Brake Test now. 

Our CDL practice tests:
Based on 2022 MI commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
MI CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
During normal driving, spring brakes are usually held back by:
2.
When is it OK to leave your truck unattended without applying the parking brakes and choking the wheels?
3.
A dual air brake system ________.
4.
What negatively affects the braking power of a spring brake?
5.
Normally during anti-lock braking, the driver:
6.
Which braking system applies and releases the parking brakes when you use the parking brake control?
7.
When the mechanical arm of a wig wag drops into your view that means the pressure in your system has dropped below what psi?
8.
Air governor cut-out should be at around:
9.
The safety valve is set automatically when pressure is:
10.
The level at which the air compressor stops pumping air is:
11.
The parking brake should not be used when wet in freezing temperatures, or:
12.
Which of these is NOT a proper time to apply the parking brakes?
13.
The S-cam:
14.
A device that limits the amount of air provided to the front brakes is a:
15.
The trailer air supply knob is usually:
16.
In case of air pressure loss, a mechanical means of preventing the vehicle from moving is called:
17.
To test the parking brake, stop the vehicle, put the parking brake on, and:
18.
Brake drums (or discs) must not have cracks longer than ____ the width of the friction area.
19.
Automatic air tanks _______.
20.
The air compressor is connected to the engine through ______.
21.
Brake linings should not be _______.
22.
The air tanks must be drained because:
23.
What does the air compressor governor control?
24.
The spring brakes of a tractor will come on when the air pressure falls within _______.
25.
To test the parking brake you should _______.