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.
Air brakes consist of ________.
2.
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?
3.
When inspecting air brakes:
4.
Modern air brakes combine three different systems. They are the service, the parking, and the _____ brakes.
5.
At 55 mph on dry pavement, the air brake lag distance is how many feet?
6.
An air brake system is fully charged at what psi?
7.
Your truck has a dual air system and one of the systems loses its pressure. What will happen?
8.
The ____ shows how much pressure is in the air tanks.
9.
When the engine is off and the parking brake released, a single vehicle air loss rate should be less than ________ psi in one minute.
10.
To stop the vehicle, air brakes systems use:
11.
The type of brakes that clamp the rotor between the brake shoes is:
12.
When does the air compressor governor allow air to start pumping?
13.
To check the free play of manual slack adjusters of S-cam brakes, you should park on:
14.
The air compressor governor controls:
15.
Average stopping distance under normal conditions at 55 mph is:
16.
Pressing and releasing the brake pedal unnecessarily:
17.
The service brake system ________.
18.
Which of the following helps the stop light switch work?
19.
The braking power of the spring brakes ______.
20.
Stab braking should only be used:
21.
If the air compressor has its own oil supply you should do what before driving?
22.
On large buses low pressure warning devices usually signal at ______.
23.
What does the air compressor governor control?
24.
A warning to drivers behind you that the air brakes have been applied is the:
25.
Vehicles with ABS have malfunction lamps that are what color?