Free Alaska CDL Air Brakes Practice Test 2022

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 2022 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
List of questions
1.
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?
2.
The reduced stopping power caused by overuse of the service brakes and excessive heat is called:
3.
The driver must be able to see a low air pressure warning which comes on before pressure in the service air tanks fall below ____ psi.
4.
A low pressure warning signal could be __________.
5.
Your truck has a dual air system and one of the systems loses its pressure. What will happen?
6.
The spring brakes used on the chambers in a straight truck will bring you to a stop when air pressure drops below ___ psi.
7.
The type of brakes that clamp the rotor between the brake shoes is:
8.
When should the spring brakes activate?
9.
Normally during anti-lock braking, the driver:
10.
When the safety valve releases air this indicates ___________.
11.
When parking a vehicle with a modulating control valve ________.
12.
Air braking takes more time than hydraulic braking because:
13.
If the low air pressure warning light comes on, you should:
14.
The air compressor governor controls:
15.
The parking brake should not be used when wet in freezing temperatures, or:
16.
The manual adjustment of automatic slack adjusters is:
17.
The trailer air supply knob is usually:
18.
To test the parking brake, stop the vehicle, put the parking brake on, and:
19.
Which of the following helps the stop light switch work?
20.
Automatic adjusters should ________.
21.
How does the antilock brake system benefit the driver?
22.
If the air compressor has its own oil supply you should do what before driving?
23.
Vehicles with air brakes _________.
24.
What brake system uses part of the service and parking brake systems to stop the vehicle in the event of a brake system failure?
25.
What is the purpose of a supply pressure gauge?