On Fri, 15 Oct 2010 18:04:15 -0400, "J. Clarke"
wrote:

In article ,
says...

On Fri, 15 Oct 2010 12:54:44 -0400, "Mike Marlow"
wrote:

Josepi wrote:

Disc brake were around for a lot longer than the ABS systems were ever
implemented.
Disc brakes were not sdesigned to "lock up" but rather be more linear
than shoe brake systems, and fade less.


You are correct that disk brakes have been around a lot longer than ABS has,
but if you believe that disk brakes will not lock up then you simply need to
drive a car that pre-dates ABS. Disk brakes will most certainly lock up.
Why do you think ABS exists?
Because most drivers don't (according to our governments and highway
safety people) have the brains to release their brakes when the wheels
start to slide.

The best driver in the world can't sense lock and modulate the pedal as
quickly or consistently as a computer with a sensor on each wheel.
Which does not NECESSARILY translate into shorter stopping distances
under all (low traction) conditions