Why do large vehicles make a hissing sound?
1 Answers
Because trucks and buses use air brakes, whenever the brake pedal is pressed, the vehicle will be braked, and when the brake pedal is released, a hissing sound will be heard. Here is some information about air brakes: Components: A standard air brake system consists of a brake control mechanism, dual-circuit brake mechanism, central disc brake mechanism, brake, air compressor, etc. Introduction: Air brakes are a type of braking system. The specialized devices in a vehicle that apply a certain force (mainly from the road surface) to specific parts of the vehicle (mainly the wheels) to achieve a certain degree of forced braking are collectively referred to as the braking system.