Free Louisiana CDL Air Brakes Practice Test 2022

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

Our CDL practice tests:
Based on 2022 LA commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
LA 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.
The reduced stopping power caused by overuse of the service brakes and excessive heat is called:
3.
During normal driving, spring brakes are usually held back by:
4.
To test the vehicle's service brakes, move the vehicle:
5.
Under normal conditions, in order to engage the parking brakes the driver should:
6.
On a long or steep downgrade, the foot brakes should be used:
7.
Brake fade is caused by:
8.
The low air pressure warning signal indicates:
9.
When performing the controlled braking method for an emergency stop, you are _________.
10.
Generally, air governor cut-in should be at:
11.
When using a vehicle with air brakes, the parking needs to be used _______.
12.
If you must make an emergency stop, you should brake so you:
13.
The parking brake knob is usually:
14.
If your truck or bus has dual parking control valves, you can use pressure from a separate tank to:
15.
Air braking takes more time than hydraulic braking because:
16.
Repeatedly partially increasing and pressing the brake pedal may result in:
17.
Automatic air tanks _______.
18.
Pushing the brake pedal down harder __________.
19.
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
20.
How does the antilock brake system benefit the driver?
21.
Why should air tanks be drained completely?
22.
To check the air compressor governor's "cut in" and "cut out" pressures you need to _________.
23.
Manual air tank drains require:
24.
What is the purpose of an air storage tank?
25.
What is an alternative name for a brake pedal?