# 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
Perfect for first-time, renewal applicants
KS CDL Air Brakes Test format:
25 questions
80% passing score
List of questions
1.
The parking or emergency brake on a heavy vehicle can only be held in position by something that cannot leak away, like:
2.
The air compressor stops pumping air at what psi?
3.
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?
4.
An application pressure gauge shows how much air you are applying to the brakes. Increased application pressure to maintain the same speed indicates that __________.
5.
A low pressure warning signal could be __________.
6.
How far should manual slack adjusters move before they need to be adjusted?
7.
The most important thing to do when a low air pressure warning comes on is:
8.
The spring brakes used on the chambers in a straight truck will bring you to a stop when air pressure drops below ___ psi.
9.
When the air system is low ________.
10.
When you release the brakes and reduce the air pressure what makes up for that air loss?
11.
What type of brakes pushes a wedge between the ends of two brake shoes to stop the vehicle?
12.
What happens when your brake drums get very hot?
13.
If the spring brakes are on, when should you push the brake pedal?
14.
The parking brake should not be used when wet in freezing temperatures, or:
15.
To stop the vehicle, the brake shoes and linings are pushed against:
16.
In case of air pressure loss, a mechanical means of preventing the vehicle from moving is called:
17.
The most common problem found in roadside inspections is:
18.
All of the following apply if the low air pressure warning signal does not work except:
19.
On newer vehicles what color is the parking brake knob?
20.
Why should you check the brake adjustment often?
21.