ABS is an automated system that uses the principles of threshold braking and cadence braking which were once practised by skilful drivers with earlier non-ABS braking systems. ABS operates at a very much faster rate and more effectively than most drivers could manage.
Although ABS generally offers improved vehicle control and decreases stopping distances on dry and slippery surfaces, on loose gravel or snow-covered surfaces, ABS may significantly increase braking distance, while still improving steering control.[2][3][4]
Since ABS was introduced in production vehicles, such systems have become increasingly sophisticated and effective. Modern versions may only prevent wheel lock under braking, but may also alter the front-to-rear brake bias. This latter function, depending on its specific capabilities and implementation, is known variously as electronic brakeforce distribution, traction control system, emergency brake assist, or electronic stability control (ESC).

维基上关于ABS的介绍，就是为了控制刹车距离的，中间那句话。
防止侧滑是靠ESP

【 在 jumbonb 的大作中提到: 】
: 实际上多数ABS起作用的情况都会增加制动距离。ABS断断续续的刹车，并不能把滑动摩擦转变为静摩擦来缩短刹车距离，准确控制车轮保持静摩擦而不打滑需要的控制精度过高，而且需要的制动力和车子载重情况，路面湿滑程度都有关。制动力稍大就抱死，稍小就制动不足以至于制动距离还不如滑动摩擦。
: 当释放制动时，车辆会减小阻力前进一段距离，重新制动后，大概率还是抱死。
: 实际上ABS的主要作用是在打滑时防止车辆方向失控。当轮子自由转动时，其摩擦力可以全部作用在横向，增强方向控制力。反之一旦抱死，方向盘就不起作用了，后轮也可能横向运动。
: ...................
--
FROM 117.39.28.*