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Connecticut CDL Permit Test - Air Brakes

Number of questions: 25
Passing score: 20
Directions: This endorsement is required for driving a vehicle with air brakes. To receive this endorsement, applicants must pass a written test. The test consists of 25 multiple choice questions. Each question has three or four answer choices. To pass, the applicant must answer at least 20 questions correctly. Test questions come from the Connecticut Commercial Driver License Manual. Questions come from the chapter covering: Air Brakes. The Air Brakes endorsement may be used with the Class A, B or C CDL.
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1.
To use the stab braking method, you should:
Apply the brakes completely until the wheels lock up, release the brakes until the wheels start rolling, then repeat the process.
Apply the brakes about halfway, but allow the wheels to keep rolling.
Apply the brakes completely until the wheels lock up and the vehicle stops.
Apply the emergency brake until the vehicle starts to slow.
2.
An air compressor governor controls:
When the air compressor pumps air into the air storage tanks.
How fast air is pumped into the air storage tanks.
The temperature of the air pumped into the air storage tanks.
3.
The parking brake in a newer vehicle is applied by:
Moving a lever to the right.
Pushing a yellow, diamond-shaped knob.
Pulling a yellow, diamond-shaped knob.
4.
Air brakes are:
An effective tool for stopping large vehicles.
Prohibited on large vehicles.
Only effective in poor weather.
A tool to improve fuel efficiency.
5.
If the spring brakes are on, you should:
Not use the brake pedal.
Press the accelerator.
Move the steering wheel.
Be especially careful because the brakes may fail.
6.
Air pressure should build up in a single air system within:
15 minutes.
12 minutes.
Three minutes.
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