Free Michigan CDL Air Brakes Practice Test 2023

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 2021 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
A driver needs to be able to see a warning when the air pressure in the service air tanks falls below ______.
An automatic wig wag will rise out of your view when the pressure in your system rises above what psi?
Your truck or bus has a dual air brake system. If a low-pressure warning comes on for only one system, what should you do?
Your truck or bus has a dual air brake system. If a low air pressure warning comes on for only one system, what should you do?
To test the vehicle's service brakes, move the vehicle:
If your vehicle has an alcohol evaporator, it is there to:
In a controlled braking emergency:
Your brakes are fading when:
While applying the brakes, what tells the driver how much air pressure is being used?
When should the spring brakes activate?
When checking the low pressure warning signal, it should turn on before the pressure drops below what psi?
When using a vehicle with air brakes, the parking needs to be used _______.
All of the following are factors in total stopping distance except:
If your truck has a dual air brake system, and one of the systems is low on pressure:
Repeatedly partially increasing and pressing the brake pedal may result in:
The most common problem found in roadside inspections is:
All of the following apply if the low air pressure warning signal does not work except:
When inspecting the air brake system, what particular item in the engine compartment should the driver pay specific attention to?
How should the air leakage rate be tested?
On newer vehicles what color is the parking brake knob?
Brake drums should not have cracks longer than what length?
Why should air tanks be drained completely?
To check the air compressor governor's "cut in" and "cut out" pressures you need to _________.
What does ABS stand for?
What is the purpose of an air storage tank?