Free Kentucky CDL Air Brakes Practice Test 2022

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

Our CDL practice tests:
Based on 2022 KY commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
KY CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
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?
2.
The safety valve discharges automatically at the pressure of:
3.
The reduced stopping power caused by overuse of the service brakes and excessive heat is called:
4.
The 3 individual systems of the air brakes are the service brakes, emergency brake, and:
5.
The application pressure gauge shows how much air pressure you:
6.
When should the spring brakes activate?
7.
When the mechanical arm of a wig wag drops into your view that means the pressure in your system has dropped below what psi?
8.
In most newer vehicles, the parking brake control will be:
9.
If your truck or bus has dual parking control valves, you can use pressure from a separate tank to:
10.
What is a \"Wig Wag\"
11.
What tells the driver how much air pressure is in the air tanks?
12.
If your vehicle has an alcohol evaporator, every day during cold weather you should:
13.
The most common problem found in roadside inspections is:
14.
The use of brakes on a long and steep downgrade under normal conditions is only a supplement to:
15.
When inspecting the air brake system, what particular item in the engine compartment should the driver pay specific attention to?
16.
The most common type of foundation brake is?
17.
How are brakes designed?
18.
If your vehicle has an alcohol evaporator, the evaporator's purpose is to _____.
19.
Brake linings should not be _______.
20.
Automatic adjusters should ________.
21.
Vehicles with air brakes _________.
22.
The spring brakes of a tractor will come on when the air pressure falls within _______.
23.
What is a wig wag ?
24.
To prevent too much pressure from building up in the system, what is installed?
25.
Water and oil _______.