Free Arizona CDL Air Brakes Practice Test 2022

Do you need an Air Brakes endorsement or L endorsement for your commercial driving license? The Arizona 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 Arizona CDL practice test questions are based on the Arizona 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 with our free CDL practice test to get ready to pass the Arizona Air Brake Test now. 

Our CDL practice tests:
Based on 2022 AZ commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
AZ CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
The most common type of foundation brakes are:
2.
If you do not have automatic tank drains, how often should you drain the oil and water from the bottom of compressed air storage tanks?
3.
"A slack adjuster’s free play needs to be adjusted if it is more than about ______ when you pull hard on it."
4.
A dual air brake system ________.
5.
In a controlled braking emergency:
6.
The application pressure gauge shows how much air pressure you:
7.
If you must make an emergency stop, you should brake so you:
8.
Brake fade is caused by:
9.
When increased application pressure to maintain the same speed becomes necessary, you should ______.
10.
When checking the low pressure warning signal, it should turn on before the pressure drops below what psi?
11.
When using a vehicle with air brakes, the parking needs to be used _______.
12.
When your brake's main air pressure is lost ________.
13.
Spring brakes will come on automatically, but the parking brake can also be applied:
14.
What happens when your brake drums get very hot?
15.
Air braking takes more time than hydraulic braking because:
16.
Total stopping distance with air brakes is Perception distance + Braking Distance + Brake Lag Distance +:
17.
Which of these is NOT a proper time to apply the parking brakes?
18.
In order to make contact with the brake drum, the brake pads and linings are pushed outward by the:
19.
Compared to hydraulic brakes, air brakes add how much distance to an average 55 mph stop?
20.
At minimum, a dual air system should build up to what psi in the primary and secondary systems?
21.
The belt of a belt-driven air compressor should be ________.
22.
During a normal drive, the spring brakes are held back by _____.
23.
Vehicles with air brakes _________.
24.
To check the air compressor governor's "cut in" and "cut out" pressures you need to _________.
25.
What is an alternative name for a brake pedal?