ABS(Anti-lock Braking System) keeps the wheels from blocking while applying the brakes hard. The advantages of this is it gives you the ability to steer your car to avoid obstacles. However, it also adds to your braking distance.
Again, ABS isn't designed to shorten your braking distance, but to give you the ability to steer while breaking hard, even on snow or ice (up to a certain point).
A while ago I had heard of another system called IBS (Intelligent Braking System). What it did is it calculated the fastest speed at which every wheel could go while braking without losing the ability to steer the car. It is a lot more efficient than ABS since ABS does not really keep the wheels from blocking, it only releases the pressure oftenly to give the llusion that the wheel continues to spin.
From what I understand, IBS uses a much much more sophisticated algorithm to calculate the speed of each wheel, which in return makes the price probably too high to have it implemented on everyday cars.