When these brakes are pressed hard (like in a panic stop or accident) the ABS pumps the brakes up to 30 times/sec. This occurs in an alternating pattern, left front/right rear and right front/left rear. This system helps the driver maintain control and stop the car in a straight line rather than spinning out of control. ABS does NOT stop the car faster. It enables you to stop it where you want to. In other words, when you slam on the brakes, the car will head the direction you turn the wheel while you are braking. ABS also helps when stopping the car in adverse weather conditions like ice, snow, and rain.