The Anti-lock Braking System (ABS) is an electronic braking assist system designed to prevent wheels from locking up during hard braking, maintaining vehicle steering control and stability while potentially reducing braking distance. During emergency braking, wheel speed sensors detect impending wheel lockup (cessation of rotation). The ECU rapidly commands the brake pressure regulator to cyclically release and apply pressure, keeping wheels rolling rather than fully locked. This process occurs in milliseconds, ensuring maximum traction between tires and the road.