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.
The air compressor stops pumping air at what psi?
2.
To test air service brakes you should:
3.
An application pressure gauge shows how much air you are applying to the brakes. Increased application pressure to maintain the same speed indicates that __________.
4.
The proper use of the brakes when going down a long steep grade after selecting a proper gear is to brake until your speed is about ____ below the posted speed and release your brake.
5.
An air brake system is fully charged at what psi?
6.
Under normal conditions, in order to engage the parking brakes the driver should:
7.
In case of a low air situation, the spring brakes should come on at:
8.
The supply pressure gauge shows how much pressure:
9.
What should a driver do when the low air pressure warning signal comes on?
10.
If the low air warning comes on while you are driving, you should:
11.
When brakes are applied, the brake shoes will press against the:
12.
What must the air pressure be, at minimum, in both parts of a dual air brake system?
13.
The emergency spring brake release knob is:
14.
If your vehicle has an alcohol evaporator, every day during cold weather you should:
15.
Why does a heavily loaded vehicle need a longer distance to stop?
16.
Initial air leakage rate for combination vehicles should be:
17.
The safety valve in the air compressor tank is set to open at _____.
18.
On large buses low pressure warning devices usually signal at ______.
19.
The belt of a belt-driven air compressor should be ________.
20.
How often should alcohol containers be checked during cold weather?
21.
Spring brakes are applied:
22.
What is the purpose of a supply pressure gauge?
23.
Required on all vehicles with air brakes, what tells the driver that air pressure is too low?
24.
Water and oil _______.
25.
If your brakes are wet, what should you do to dry them quicker?