Brakes and Traction Control: Description and Operation

Anti-Lock Brake System (ABS)
The Anti-Lock Brake System (ABS) prevents the wheels from locking up when braking, regardless of the surface conditions. This allows the car to stop in a shorter distance, and allows the driver to maintain directional control of the vehicle during heavy braking.
During normal braking conditions, the ABS operates like a conventional system. During heavy braking, however, each wheels braking pressure is modulated according to its speed. To maintain vehicle stability, both rear wheels receive the same signal.