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.
An automatic wig wag will rise out of your view when the pressure in your system rises above what psi?
2.
Emergency stab braking is:
3.
Your brakes are fading when:
4.
Brake fade is caused by:
5.
With air brake vehicles, the parking brake should be used:
6.
When increased application pressure to maintain the same speed becomes necessary, you should ______.
7.
Another name for the brake pedal is the "foot valve", or:
8.
Which braking system applies and releases the parking brakes when you use the parking brake control?
9.
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
10.
If you must make an emergency stop, you should brake so you:
11.
Spring brakes will come on automatically, but the parking brake can also be applied:
12.
If the low air pressure warning light comes on, you should:
13.
Besides heat, another cause of brake fade is:
14.
Total stopping distance with air brakes is Perception distance + Braking Distance + Brake Lag Distance +:
15.
The emergency spring brake release knob is:
16.
What tells the driver how much air pressure is in the air tanks?
17.
If your vehicle has an alcohol evaporator, every day during cold weather you should:
18.
Automatic air tanks _______.
19.
On newer vehicles what color is the parking brake knob?
20.
If your vehicle has an alcohol evaporator, the evaporator's purpose is to _____.
21.
Brake linings should not be _______.
22.
Stop light switches are necessary because ________.
23.
Vehicles with air brakes _________.
24.
What is the purpose of a supply pressure gauge?
25.
What is an alternative name for a brake pedal?