Free Mississippi CDL Air Brakes Practice Test 2022

Do you need an Air Brakes endorsement or an L endorsement for your commercial driving license? The Mississippi 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 Mississippi 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 Mississippi CDL Practice Test to get ready to pass the Mississippi CDL Air Brake Test now. 

Our CDL practice tests:
Based on 2022 MS commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
MS CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
An air compressor can be cooled by _______.
2.
"A slack adjuster’s free play needs to be adjusted if it is more than about ______ when you pull hard on it."
3.
Under normal conditions, in order to engage the parking brakes the driver should:
4.
An air brake system is fully charged at what psi?
5.
If your vehicle has an alcohol evaporator, it is there to:
6.
The 3 individual systems of the air brakes are the service brakes, emergency brake, and:
7.
When the engine is off and the parking brake released, a single vehicle air loss rate should be less than ________ psi in one minute.
8.
Where is the modulating control valve located on some vehicles?
9.
The type of brakes that clamp the rotor between the brake shoes is:
10.
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
11.
What is the purpose of an antilock braking system (ABS)?
12.
"Some air brake systems have an alcohol evaporator. What may happen if you don’t keep the proper level of alcohol?"
13.
All of the following are factors in total stopping distance except:
14.
How should you check that your service brakes are working properly?
15.
When inspecting the air brake system, what particular item in the engine compartment should the driver pay specific attention to?
16.
How should the air leakage rate be tested?
17.
In dual air systems, how long should it take air pressure to build 85 to 100 psi?
18.
Which of the following helps the stop light switch work?
19.
Brake linings should not be _______.
20.
Stop light switches are necessary because ________.
21.
The parking brake should be used:
22.
A warning to drivers behind you that the air brakes have been applied is the:
23.
The governor stops the compressor from pumping air at:
24.
Vehicles with ABS have malfunction lamps that are what color?
25.
What happens when pressure is put on the air brakes?