Anti-lock brakes are designed to prevent skidding and help drivers maintain steering control during an emergency stopping situation. In cars equipped with conventional brakes, the driver pumps the brakes, whereas in cars equipped with four-wheel ABS, the driver keeps a firm foot on the brake, allowing the system to rapidly and automatically pump the brakes. Because the wheels don't lock, drivers have the ability to steer around hazards if they are unable to stop in time.
How do you know your ABS is working?
Most anti-lock brake systems let you know when you have activated your ABS. The driver usually notices a mechanical sound and can feel some pulsation or increased resistance in the brake pedal. This means traction limits have been reached on the road being traveled. It is important not to take your foot off the brake pedal when you hear noise or feel vibrations, but instead continue to apply firm pressure.