Why Does the Brake Make a Clicking Sound on Icy Roads?

[McRosalie]

When driving on icy roads, the abnormal sound from the brakes is due to the ABS system in operation. The ABS system is the Anti-lock Braking System of the vehicle. Here is more information about ABS: 1. Introduction to ABS: The full name of the Anti-lock Braking System is Anti-lock Brake System, or ABS, which can be installed on any vehicle with hydraulic brakes. It uses a rubber airbag inside the valve body. When the brake is pressed, it applies pressure to the brake fluid, filling the ABS valve body. The airbag then uses an intermediate air layer to return the pressure, allowing the wheels to avoid the lock-up point. 2. Hazards of Not Having ABS: For vehicles without ABS, if the brake pedal is pressed hard while driving, the wheel speed will rapidly decrease. When the braking force exceeds the friction between the wheels and the ground, the wheels will lock up. Fully locked wheels reduce the friction between the tires and the ground. If the front wheels lock up, the driver loses control over the vehicle's direction. If the rear wheels lock up, it is very easy for the vehicle to skid sideways.