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From : E

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>If you are "threshold braking" then you will still be able to steer
>because by definition you are at the braking limit WITHOUT locking up
>the brakes.
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Actually, if you are threshold braking in a straight line, and then you turn the wheel, body roll transfers load off the inside front and rear tires and they lock. Not only does this increase stopping distance, but the car begins to yaw. It also flat spots tires. In practice, you have to get out of the brakes quite a bit to keep the inside front tire from locking going into a turn. This also increases stopping distance as the outside front tire is not using all of its available traction. ABS maximizes the braking force on the inside and outside front tires independently, decreasing stopping distance while maintaing steering control in this scenario over non-ABS.

For those of you who think you don't want ABS for the street, let me tell you what happened to me today on the way to work:

Driving 45 mph down Baldwin Rd. through Gingelville on the way to work. I'm in my '98 V10 Ram with 4 wheel ABS. In front of me is an Expedition. In front of her is a guy in a Saturn talking on his cell phone. To the left on the shoulder going the other way is a school bus with its yellow flashers (not red) on picking up kids from a daycare center. I'm sure from lack of attention, the guy in the Saturn decides that even though the red lights aren't on, he should do a panic stop. The Expedition stops hard behind him. At that moment, I am reaching down in my map pocket for my sunglasses and subsequently got on the brakes late. I apply the pedal hard and do a full bore, barking tires from the ABS, panic stop. About halfway through the stop, I realize my rate of closure between the Expedition and my truck is not decreasing fast enough. I cut left late, and was sure I was going to clip her LR with my RF. I missed by inches and came to a stop next to her in the oncoming lane. The car behind me came to a stop next to us on the shoulder. The guy in the Saturn keeps talking, oblivious to the almost wreck behind him.

Bottom line is, I would have slid into the Expedition without ABS. Even if I had threshold braked it perfectly, I wouldn't have been able to steer around her. In the controlled environment of the race track, ABS can be beaten. Out in the real world where you can get caught off guard, ABS gives you the option of steering, too.

E

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