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Free Alaska CDL Air Brakes Practice Test 2023

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

Our CDL practice tests:
Based on 2021 AK commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
AK CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
Study now
List of questions
1.
What can legally hold a parking or emergency brake in position for a truck, truck tractor, or bus?
2.
Your truck or bus has a dual air brake system. If a low-pressure warning comes on for only one system, what should you do?
3.
An air compressor can be cooled by _______.
4.
During normal driving, spring brakes are usually held back by:
5.
Emergency stab braking is:
6.
Under normal conditions, in order to engage the parking brakes the driver should:
7.
Excessive heat caused by using your brakes too often can also cause:
8.
Why drain water from compressed air tanks?
9.
Brake fade is caused by:
10.
What negatively affects the braking power of a spring brake?
11.
When you need to depress the brakes harder and harder just to maintain the same speed this means ______.
12.
In most newer vehicles, the parking brake control will be:
13.
Some vehicles are equipped with a control allowing you to apply the spring brakes gradually, called a:
14.
What is a \"Wig Wag\"
15.
When checking the air pressure buildup, pressure should build:
16.
Repeatedly partially increasing and pressing the brake pedal may result in:
17.
The most common type of foundation brake is?
18.
Brake drums should not have cracks longer than what length?
19.
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:
20.
The air tanks must be drained because:
21.
Why should air tanks be drained completely?
22.
A warning to drivers behind you that the air brakes have been applied is the:
23.
The warning light and buzzer will come on when the air pressure in either system drops below what psi?
24.
If your brakes are wet, what should you do to dry them quicker?
25.
What happens when pressure is put on the air brakes?
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