One of the greatest achievements in automotive history was the invention of anti-lock brake (ABS) systems. It provides drivers with the ability to control a vehicle during less than optimal vehicle braking conditions. The purpose of anti-lock systems is simple. It prevents wheel lockup and loss of vehicle control during braking. There are two types of ABS systems in use: 1. Four wheel ABS, which can control braking at all of the wheels on the vehicle. 2. Two wheel, or rear ABS, which controls braking at the rear wheels only.
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