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
A driver needs to be able to see a warning when the air pressure in the service air tanks falls below ______.
An automatic wig wag will rise out of your view when the pressure in your system rises above what psi?
The low air pressure warning signal indicates:
In most newer vehicles, the parking brake control will be:
When using a vehicle with air brakes, the parking needs to be used _______.
When your brake's main air pressure is lost ________.
When does the air compressor governor allow air to start pumping?
The manual adjustment of automatic slack adjusters is:
Average stopping distance under normal conditions at 55 mph is:
A device that limits the amount of air provided to the front brakes is a:
Under normal braking conditions, the vehicle:
Compared to hydraulic brakes, air brakes add how much distance to an average 55 mph stop?
In case of air pressure loss, a mechanical means of preventing the vehicle from moving is called:
The brake pedal in an air brake system _______.
Controlled braking is only possible _________.
Pushing the brake pedal down harder __________.
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
In a dual air brake system, if the air pressure in one part of the system drops enough to set off the low air warning:
Some vehicles are equipped with a separate air tank used specifically to release the spring brakes in an emergency, called a:
Why should air tanks be drained completely?
You should use the parking brake _____________.
What brake system uses part of the service and parking brake systems to stop the vehicle in the event of a brake system failure?
What is the purpose of a supply pressure gauge?
A warning to drivers behind you that the air brakes have been applied is the:
Typically, at what psi does the air compressor governor stop the compressor from pumping air?