CDL Air Brakes Test

The parking brakes should be used____in air brake vehicles.

What should you do if the low air pressure warning comes on for only one system in a truck or bus that has a dual air brake system?

What is a supply pressure gauge used for?

When should you avoid using the parking brake?

The best way to test the low air pressure warning signal is to:

Spring brakes are usually held back by_____during normal driving.

What is the benefit of ABS?

Select the inappropriate way to test for the low pressure warning signal.

At what pressure is the safety valve in the air compressor tank set to open?

Select the true statement about what the Air Compressor Governor controls:

Is this statement true or false: you do not need to use the parking brake if are leaving your vehicle for a short amount of time.

What is the brake system that applies and releases the brakes when the brake pedal is used?

What are spring brakes?

An air system that is fully charged will typically have ___ psi of pressure.

The safety valve is usually set to open at:

Alcohol evaporators in some air brake systems help to:

What must vehicles with air brakes have?

Select how brakes work on long, steep downgrades:

Select the true statement in regards to brake drums:

Select the true statement in regards to the braking power of spring brakes.

Select which vehicles are required to have a low air pressure warning signal:

When should you drain air tanks that do not have an automatic tank drain?

How do you determine if slack adjusters need to be adjusted?

____is the most common type of foundation brakes used by heavy vehicles.

With the engine cutt off and the brakes released the air loss in a straight truck or bus should not be more than:

Select the true statement about dual air brake systems.

Select the factors that can cause your brakes to fade or fail:

You should_____to make an emergency stop with air brakes when using the stab braking method.

When does your vehicle's single brake system need an adjustment?

Select the statement that tells you how you can check the low pressure warning signal.

What does it man when the safety valve releases air?

After the initial drop, the maximum leakage rates per minute is:

Select the purpose of fanning air brakes:

Select whether the following statement is true or false: Front wheel brakes are good to use in all conditions.

Air brake systems should not lose air faster than____when testing for air leakage rates in combination vehicles before applying the brake pedal.

Select how you can tell if your vehicle is equipped with an anti-lock braking system:

Where is compressed air stored?

Select the factor that is known to cause brakes to fail or fade. (more than one answer may be correct, but select only one)

Select the true statement in regards to an application pressure gauge:

At what "cut out" level does the governor stop pumping air?