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
List of questions
The safety valve discharges automatically at the pressure of:
Air tanks need to be drained ______.
The proper use of the brakes when going down a long steep grade after selecting a proper gear is to brake until your speed is about ____ below the posted speed and release your brake.
The 3 individual systems of the air brakes are the service brakes, emergency brake, and:
The application pressure gauge shows how much air pressure you:
While applying the brakes, what tells the driver how much air pressure is being used?
With air brake vehicles, the parking brake should be used:
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
If you must make an emergency stop, you should brake so you:
Why is manually adjusting automatic slack adjusters dangerous?
After the initial pressure drop, air leakage for combination vehicles should be less than:
To stop the vehicle, the brake shoes and linings are pushed against:
All of the following apply if the low air pressure warning signal does not work except:
When inspecting the air brake system, what particular item in the engine compartment should the driver pay specific attention to?
You should avoid using the parking brake when _______.
Why does a heavily loaded vehicle need a longer distance to stop?
Some vehicles are equipped with a separate air tank used specifically to release the spring brakes in an emergency, called a:
The braking power of the spring brakes ______.
If your vehicle has an alcohol evaporator, the evaporator's purpose is to _____.
Brake drums or discs _______.
During a normal drive, the spring brakes are held back by _____.
What does the air compressor governor control?
The parking brake should be used:
Vehicles without automatic air tank drains need to be checked manually to remove ________?
In a dual air brake system, one system will typically control the rear brakes, and the other: