What can happen if the air pressure gets too low in an air brake system?

Question

Pressing and releasing the brake pedal unnecessarily can let air out faster than the compressor can replace it, reducing the available air pressure. If the air pressure in an air brake system gets too low, the brakes will no longer work.

Accepted Answer

The brakes may not work.

Answer

The brakes may squeak.

Answer

The brakes may be sluggish.

Answer

The brakes will be very sensitive.