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.
An automatic wig wag will rise out of your view when the pressure in your system rises above what psi?
2.
Your truck or bus has a dual air brake system. If a low-pressure warning comes on for only one system, what should you do?
3.
What can legally hold a parking or emergency brake in position for a truck, truck tractor, or bus?
4.
Air brakes consist of ________.
5.
The safety valve discharges automatically at the pressure of:
6.
How far should manual slack adjusters move before they need to be adjusted?
7.
Why drain water from compressed air tanks?
8.
The low air pressure warning signal indicates:
9.
Normally during anti-lock braking, the driver:
10.
When using a vehicle with air brakes, the parking needs to be used _______.
11.
What is the purpose of an antilock braking system (ABS)?
12.
What happens when your brake drums get very hot?
13.
All of the following are factors in total stopping distance except:
14.
When checking the air pressure buildup, pressure should build:
15.
Average stopping distance under normal conditions at 55 mph is:
16.
How should you check that your service brakes are working properly?
17.
A device that limits the amount of air provided to the front brakes is a:
18.
Repeatedly partially increasing and pressing the brake pedal may result in:
19.
To test the parking brake, stop the vehicle, put the parking brake on, and:
20.
Controlled braking is only possible _________.
21.
Pushing the brake pedal down harder __________.
22.
Automatic air tanks _______.
23.
You should use the parking brake _____________.
24.
The spring brakes of a tractor will come on when the air pressure falls within _______.
25.
What is a wig wag ?