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 Nevada 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.

Pumps air into the air storage tanks.
Fills the tires.
Moves air to the back of the truck.
Cleans the brakes.

15 minutes.
12 minutes.
Three minutes.
One minute.

Continue to drive normally.
Drive with one foot on the accelerator and one foot on the brake pedal.
Call the local law enforcement agency.
Safely exit the roadway and stop.

Nevada CDL Permit Test - Air Brakes

If you are driving and the ABS light comes on, it means that the ABS:

On a truck with air brakes, the braking system’s air compressor:

Air pressure should build up in a single air system within:

Some air brake systems introduce alcohol into the system to:

If the air pressure warning light comes on, you should:

Failing to drain air tanks could result in:

Number of questions:	25
Passing score:	20

Cannot work due to weather conditions.
Has just been activated.
Is not working properly.

Make the brakes work without squeaking.
Prevent ice from forming in the brake system.
Prevent people from breathing the air from the system.

Water accumulations freezing and causing brake failure.
Squishy brakes.
Too much air collecting in the tanks.