Free Kansas CDL Air Brakes Practice Test 2023

Do you need an Air Brakes endorsement or an L endorsement for your commercial driving license? The Kansas CDL Air Brake 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 CDL practice test packs are based on the Kansas 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 our Kansas CDL Practice Test to get ready to pass the Kansas CDL Air Brake Test now. 

Our CDL practice tests:
Based on 2021 KS commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
KS CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
Air brakes consist of ________.
When is it OK to leave your truck unattended without applying the parking brakes and choking the wheels?
Modern air brakes combine three different systems. They are the service, the parking, and the _____ brakes.
Parking or emergency brakes of trucks and buses can be legally held on by ____ pressure.
In case of a low air situation, the spring brakes should come on at:
Your truck has a dual air system and one of the systems loses its pressure. What will happen?
The main factor in causing brake fade is:
To make sure that the spring brakes come on automatically, do all of the following except:
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
When your brake's main air pressure is lost ________.
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:
When brakes are applied, the brake shoes will press against the:
Which of these is NOT a proper time to apply the parking brakes?
In case of emergency stops, drivers should:
In order to make contact with the brake drum, the brake pads and linings are pushed outward by the:
How should the air leakage rate be tested?
At minimum, a dual air system should build up to what psi in the primary and secondary systems?
The air tanks must be drained because:
Initial air leakage rate for combination vehicles should be:
On newer vehicles, the parking brake control knob is typically yellow, but on older vehicles, the parking brake might be what color?
Why should air tanks be drained completely?
What does the air compressor governor control?
The warning light and buzzer will come on when the air pressure in either system drops below what psi?
What is the function of a safety valve?