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.
When inspecting air brakes:
2.
During normal driving, spring brakes are usually held back by:
3.
Air tanks need to be drained ______.
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.
The supply pressure gauge shows how much pressure:
6.
The brake system that applies and releases the brakes when the driver uses the brake pedal is the ________ brake system.
7.
The application pressure gauge shows how much air pressure you:
8.
When performing the controlled braking method for an emergency stop, you are _________.
9.
When your brake's main air pressure is lost ________.
10.
Why is manually adjusting automatic slack adjusters dangerous?
11.
If your truck or bus has dual parking control valves, you can use pressure from a separate tank to:
12.
In case of emergency stops, drivers should:
13.
Repeatedly partially increasing and pressing the brake pedal may result in:
14.
With air brake vehicles, the parking brakes should be used:
15.
Controlled braking is only possible _________.
16.
Pushing the brake pedal down harder __________.
17.
Initial air leakage rate for combination vehicles should be:
18.
How often should alcohol containers be checked during cold weather?
19.
You should use the parking brake _____________.
20.
What does the air compressor governor control?
21.
Spring brakes are applied:
22.
Typically, at what psi does the air compressor governor stop the compressor from pumping air?
23.
To prevent too much pressure from building up in the system, what is installed?
24.
Required on all vehicles with air brakes, what tells the driver that air pressure is too low?
25.
If your brakes are wet, what should you do to dry them quicker?