what are anti lock brakes

Anti-lock brakes (ABS) are a safety feature used on land vehicles such as cars, motorcycles, trucks, and buses. They work by preventing the wheels from locking up during hard braking, which can cause skidding and loss of control. ABS uses different schemes depending on the type of brakes in use, and they can be differentiated by the number of channels and the number of speed sensors. When the ABS is in operation, the driver will feel a pulsing in the brake pedal, which comes from the rapid opening and closing of the valves. This pulsing also tells the driver that the ABS has been triggered. ABS is not intended to decrease stopping distances, but rather to provide additional steering in emergency situations. The effectiveness of ABS depends on road user behavior, and it has been suggested that the results to date may also be partly due to lack of knowledge or incorrect assumptions.