# Free Georgia CDL Air Brakes Practice Test 2023

Do you need an Air Brakes endorsement or an L endorsement for your commercial driving license? The Georgia 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 Georgia CDL practice test questions are relevant, all of our practice questions are based on the Georgia 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 CDL practice test to get ready to pass the Georgia CDL Air Brake Test now.

Our CDL practice tests:
Based on 2021 GA commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
GA CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
The stop light switch:
2.
An application pressure gauge shows how much air you are applying to the brakes. Increased application pressure to maintain the same speed indicates that __________.
3.
During normal driving, spring brakes are usually held back by:
4.
The spring brakes used on the chambers in a straight truck will bring you to a stop when air pressure drops below ___ psi.
5.
The supply pressure gauge shows how much pressure:
6.
Your brakes are fading when:
7.
When the engine is off and the parking brake released, a single vehicle air loss rate should be less than ________ psi in one minute.
8.
When you release the brakes and reduce the air pressure what makes up for that air loss?
9.
What should a driver do when the low air pressure warning signal comes on?
10.
If your truck or bus has dual parking control valves, you can use pressure from a separate tank to:
11.
If your truck has a dual air brake system, and one of the systems is low on pressure:
12.
After the initial pressure drop, air leakage for single vehicles should be less than:
13.
Average stopping distance under normal conditions at 55 mph is:
14.
In a dual air brake system, the first system, supplying the rear brakes, is commonly known as the "primary" system, and the other as the:
15.
Under normal braking conditions, the vehicle:
16.
Compared to hydraulic brakes, air brakes add how much distance to an average 55 mph stop?
17.
At what level will the low air warning usually take effect?
18.
Brake drums should not have cracks longer than what length?
19.
The most common type of foundation brake is?
20.
Why should you check the brake adjustment often?
21.
If your vehicle has an alcohol evaporator, the evaporator's purpose is to _____.
22.
Stab braking should only be used:
23.
Spring brakes are applied:
24.
What is the purpose of a supply pressure gauge?
25.
Vehicles without automatic air tank drains need to be checked manually to remove ________?