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.
Air brakes consist of ________.
2.
A low pressure warning signal could be __________.
3.
In case of a low air situation, the spring brakes should come on at:
4.
What negatively affects the braking power of a spring brake?
5.
When testing air leakage rates for single vehicles, initial loss rate should be less than:
6.
Generally, air governor cut-in should be at:
7.
When performing the controlled braking method for an emergency stop, you are _________.
8.
Which braking system applies and releases the parking brakes when you use the parking brake control?
9.
When you need to depress the brakes harder and harder just to maintain the same speed this means ______.
10.
In most newer vehicles, the parking brake control will be:
11.
The parking brake knob is usually:
12.
Besides heat, another cause of brake fade is:
13.
Average stopping distance under normal conditions at 55 mph is:
14.
A device that limits the amount of air provided to the front brakes is a:
15.
All of the following apply if the low air pressure warning signal does not work except:
16.
In a dual air brake system, if the air pressure in one part of the system drops enough to set off the low air warning:
17.
When driving an older vehicle that has a manual front brake limiting valve, drivers should:
18.
The air tanks must be drained because:
19.
Brake linings should not be _______.
20.
How does the antilock brake system benefit the driver?
21.
Stop light switches are necessary because ________.
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.
On a long or steep downgrade, how should vehicle speed be primarily controlled?