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
The parking or emergency brake on a heavy vehicle can only be held in position by something that cannot leak away, like:
A low air pressure warning signal is ________.
When is it OK to leave your truck unattended without applying the parking brakes and choking the wheels?
The most important thing to do when a low air pressure warning comes on is:
In case of a low air situation, the spring brakes should come on at:
Total stopping distance for air brakes is longer than that for hydraulic brakes due to ______ distance.
The main factor in causing brake fade is:
When the air system is low ________.
When increased application pressure to maintain the same speed becomes necessary, you should ______.
Generally, air governor cut-in should be at:
Which braking system applies and releases the parking brakes when you use the parking brake control?
If the air compressor should develop a leak, what keeps the air in the tanks?
Spring brakes will come on automatically, but the parking brake can also be applied:
If you are driving down a steep downgrade and have reached your safe speed of 40 mph, you would apply the service brake until your speed dropped to ____ mph.
What must the air pressure be, at minimum, in both parts of a dual air brake system?
A device that limits the amount of air provided to the front brakes is a:
If your vehicle has an alcohol evaporator, every day during cold weather you should:
If one air system is very low on pressure _______.
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
The air compressor is connected to the engine through ______.
At minimum, a dual air system should build up to what psi in the primary and secondary systems?
Air tanks should be drained:
To prevent too much pressure from building up in the system, what is installed?
Vehicles with ABS have malfunction lamps that are what color?
Water and oil _______.