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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.
To test air service brakes you should:
2.
An application pressure gauge shows how much air you are applying to the brakes. Increased application pressure to maintain the same speed indicates that __________.
3.
The air brake lag distance at 55 mph on dry pavement adds about ____ feet.
4.
How far should manual slack adjusters move before they need to be adjusted?
5.
To test the vehicle's service brakes, move the vehicle:
6.
Your brakes are fading when:
7.
The ____ shows how much pressure is in the air tanks.
8.
What should a driver do when the low air pressure warning signal comes on?
9.
What happens when your brake drums get very hot?
10.
The safety valve is set automatically when pressure is:
11.
All of the following are factors in total stopping distance except:
12.
Which of these is NOT a proper time to apply the parking brakes?
13.
Under normal braking conditions, the vehicle:
14.
In case of air pressure loss, a mechanical means of preventing the vehicle from moving is called:
15.
At what level will the low air warning usually take effect?
16.
Why should you check the brake adjustment often?
17.
Brake linings should not be _______.
18.
The safety valve in the air compressor tank is set to open at _____.
19.
How often should alcohol containers be checked during cold weather?
20.
On large buses low pressure warning devices usually signal at ______.
21.
The belt of a belt-driven air compressor should be ________.
22.
What is used to put alcohol into the system and reduce ice risk?
23.
To check the air compressor governor's "cut in" and "cut out" pressures you need to _________.
24.
What is a wig wag ?
25.
Manual air tank drains require:
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