Anti-lock
braking system (ABS) is an automobile safety system that allows the wheels on a motor
vehicle to maintain tractive contact with the road surface
according to driver inputs while braking,
preventing the wheels from locking up (ceasing rotation) and avoiding
uncontrolled skidding.
ABS generally offers improved
vehicle control and decreases stopping distances on dry and slippery surfaces
for many drivers; however, on loose surfaces like gravel or snow-covered
pavement, ABS can significantly increase braking
distance, although still improving vehicle control.