What is the function of a truck's air compressor?

The function of a truck's air compressor is to build and maintain the air pressure required for the braking system. In a compressed air braking system, the compressor pressurizes air and stores it in tanks, making this air available for applying the brakes. When the driver presses the brake pedal, this compressed air is released to activate the brake system, which is vital for safe stopping power, especially in large vehicles like trucks. The air compressor is essential for ensuring that there is sufficient pressure within the system for effective braking performance, which directly contributes to the safety of the vehicle and those around it.