The application pressure gauge:

Question

In an air brake system, the application pressure gauge shows how much air pressure is being applied to the brakes. Not all vehicles with an air brake system have this gauge.

Accepted Answer

Shows how much air pressure is being applied to the brakes.

Answer

Shows the temperature of air being used in the braking system.

Answer

Shows the pressure of the air coming from the compressor.

Answer

Shows the number of times the brakes have been used.