Free Alabama CDL Air Brakes Practice Test 2022

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

Our CDL practice tests:
Based on 2022 AL commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
AL CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
Air tanks need to be drained ______.
2.
A dual air brake system ________.
3.
To test the vehicle's service brakes, move the vehicle:
4.
While applying the brakes, what tells the driver how much air pressure is being used?
5.
To make sure that the spring brakes come on automatically, do all of the following except:
6.
Normally during anti-lock braking, the driver:
7.
The type of brakes that clamp the rotor between the brake shoes is:
8.
When you release the brakes and reduce the air pressure what makes up for that air loss?
9.
What should a driver do when the low air pressure warning signal comes on?
10.
When does the air compressor governor allow air to start pumping?
11.
After the initial pressure drop, air leakage for single vehicles should be less than:
12.
In a dual air brake system, the first system, supplying the rear brakes, is commonly known as the "primary" system, and the other as the:
13.
After the initial pressure drop, air leakage for combination vehicles should be less than:
14.
To stop the vehicle, the brake shoes and linings are pushed against:
15.
When inspecting the air brake system, what particular item in the engine compartment should the driver pay specific attention to?
16.
Why should you check the brake adjustment often?
17.
The most common type of foundation brake is?
18.
In dual air systems, how long should it take air pressure to build 85 to 100 psi?
19.
If one air system is very low on pressure _______.
20.
Some vehicles are equipped with a separate air tank used specifically to release the spring brakes in an emergency, called a:
21.
During a normal drive, the spring brakes are held back by _____.
22.
What does the air compressor governor control?
23.
What is used to put alcohol into the system and reduce ice risk?
24.
A warning to drivers behind you that the air brakes have been applied is the:
25.
To test the parking brake you should _______.