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.
What can legally hold a parking or emergency brake in position for a truck, truck tractor, or bus?
2.
The stop light switch:
3.
The air brake lag distance at 55 mph on dry pavement adds about ____ feet.
4.
Excessive use of the service brakes results in overheating which can lead to:
5.
A dual air brake system ________.
6.
At 55 mph on dry pavement, the air brake lag distance is how many feet?
7.
The 3 individual systems of the air brakes are the service brakes, emergency brake, and:
8.
If you must make an emergency stop, you should brake so you:
9.
The low air pressure warning signal indicates:
10.
To make sure that the spring brakes come on automatically, do all of the following except:
11.
The type of brakes that clamp the rotor between the brake shoes is:
12.
When should the spring brakes activate?
13.
When the safety valve releases air this indicates ___________.
14.
What should a driver do when the low air pressure warning signal comes on?
15.
What is a \"Wig Wag\"
16.
The level at which the air compressor stops pumping air is:
17.
A device that limits the amount of air provided to the front brakes is a:
18.
Pressing and releasing the brake pedal unnecessarily:
19.
The most common problem found in roadside inspections is:
20.
In dual air systems, how long should it take air pressure to build 85 to 100 psi?
21.
If one air system is very low on pressure _______.
22.
Which of the following helps the stop light switch work?
23.
The air compressor is connected to the engine through ______.
24.
What does the air compressor governor control?
25.
A warning to drivers behind you that the air brakes have been applied is the: