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 air compressor stops pumping air at what psi?
When inspecting air brakes:
"A slack adjuster’s free play needs to be adjusted if it is more than about ______ when you pull hard on it."
All air brake equipped vehicles have:
Parking or emergency brakes of trucks and buses can be legally held on by ____ pressure.
The supply pressure gauge shows how much pressure:
The brake system that applies and releases the brakes when the driver uses the brake pedal is the ________ brake system.
When performing the controlled braking method for an emergency stop, you are _________.
Another name for the brake pedal is the "foot valve", or:
When you release the brakes and reduce the air pressure what makes up for that air loss?
Air governor cut-out should be at around:
When using a vehicle with air brakes, the parking needs to be used _______.
It is not safe to drive a vehicle that has brake drums with cracks that are longer than _____ of the width of the friction area.
If your truck has a dual air brake system, and one of the systems is low on pressure:
Besides heat, another cause of brake fade is:
The emergency spring brake release knob is:
What tells the driver how much air pressure is in the air tanks?
With air brake vehicles, the parking brakes should be used:
Brake drums (or discs) must not have cracks longer than ____ the width of the friction area.
If you need to make an emergency stop, you should brake so that you can ________.
Initial air leakage rate for combination vehicles should be:
Why do air brakes take longer to stop than hydraulic brakes?
On newer vehicles, the parking brake control knob is typically yellow, but on older vehicles, the parking brake might be what color?
What is the purpose of an air storage tank?
Vehicles with air brakes have pressure gauges connected to the _______.