Free Connecticut CDL Air Brakes Practice Test 2022

Do you need an Air Brakes endorsement or an L endorsement for your commercial driving license? The 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 Connecticut CDL Practice test questions are based on the CT 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 free CDL Practice Test to get ready to pass the Connecticut CDL Air Brake Test now. 

Our CDL practice tests:
Based on 2022 CT commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
CT CDL Air Brakes Test format:
25 questions
20 correct answers to pass
80% passing score
List of questions
1.
Air brakes consist of ________.
2.
When inspecting air brakes:
3.
How far should manual slack adjusters move before they need to be adjusted?
4.
A mechanical device that drops a low air warning into a drivers view is called a:
5.
Normally during anti-lock braking, the driver:
6.
The type of brakes that clamp the rotor between the brake shoes is:
7.
When testing air leakage rates for single vehicles, initial loss rate should be less than:
8.
Generally, air governor cut-in should be at:
9.
When the mechanical arm of a wig wag drops into your view that means the pressure in your system has dropped below what psi?
10.
What is the purpose of an antilock braking system (ABS)?
11.
When stab braking if you re-apply the brakes before the wheels start rolling, __________.
12.
All of the following are factors in total stopping distance except:
13.
When checking the air pressure buildup, pressure should build:
14.
In case of emergency stops, drivers should:
15.
To test the parking brake, stop the vehicle, put the parking brake on, and:
16.
Automatic air tanks _______.
17.
The service brake system ________.
18.
On newer vehicles what color is the parking brake knob?
19.
If one air system is very low on pressure _______.
20.
The air tanks must be drained because:
21.
Why should you drain water from compressed air tanks?
22.
What does the air compressor governor control?
23.
The spring brakes of a tractor will come on when the air pressure falls within _______.
24.
Vehicles without automatic air tank drains need to be checked manually to remove ________?
25.
What is a wig wag ?