stopping distance?

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Jul 18, 2007 | 05:09 PM

LS6dude

Thread Starter

Burning Brakes

Joined: Jul 2005

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From: DFW

stopping distance?

60-0 is 110 feet?

Just curious cause I'm taking a drivers safety course for a speeding ticket. It gives tables of 60-0 for stopping distance on cars. According to them it's 171 feet. Wonder if I tell them my car stops faster then that if I can skip this course?

Jul 18, 2007 | 05:19 PM

mforman42

Melting Slicks

Joined: Jan 2004

Posts: 2,158

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From: Henderson Nevada

Quote:

Originally Posted by LS6dude

They must have data from the 60s. The average car stops in about 130 ft, and a Vette should do it in less than 120 ft. Of course, they could be assuming some reaction time in the equation. Even then, at 88 ft/sec (60 MPH), a full half second reaction time would be required to add 44 ft.

Jul 18, 2007 | 05:57 PM

C6Tim

Melting Slicks

Joined: Feb 2007

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From: Florida

2026 Restomod of the Year Finalist

2025 Restomod of the Year Finalist

Speaking of which... yesterday I was cruising down a side road going about 40 when a pick-up truck with a trailer full of lawn mowers and weed-eaters pulled out in front of me. I stood on the brakes and the car came to a screeching halt in what seemed like inches. Nice to know I can stop when I really need to!

Also, to those who read the thread about having a problem turning the tires in a A6...... well with hot tires and from a standing stop (after missing the jerk who pulled out in front of me) I jammed the gas pedal to the floor and lit the tires up for a few feet. I could have kept going once the tires broke loose of course, but did not want to make a scene.

Jul 18, 2007 | 06:02 PM

mvcrash

Le Mans Master

Joined: Mar 2006

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From: Northern NJ

It actually depends a great deal on the roadway surface. The tests they show in car mags do not tell what the drag factor (coefficient of friction adjusted for super elevation) of the roadway surface.
In Northern NJ, I have measured roadways that have a 30% difference from one road to another, depending on location and traffic conditions.

Bet that is clear as mud right now.

Jul 18, 2007 | 07:10 PM

Vette_DD

Team Owner

Joined: May 2004

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From: McKinney TX

St. Jude Donor '21-'22-'23-'24

Last figures I saw quoted by GM about the time the 05 C6 came out, they were saying 125 feet for all except the Z51-equipped models. Z51-equipped models they quoted 116 feet.

Jul 18, 2007 | 08:20 PM

Eritosthenes

Melting Slicks

Joined: Aug 2006

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From: Fairview Heights IL

60-to-0: Anything under 110 feet usually requires a concrete pillar

Jul 18, 2007 | 08:32 PM

Hoonose

Team Owner

Joined: Feb 2000

Posts: 53,535

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From: Arizona

The real life braking distances are farther due to time for recognition and reaction times.
In controlled testing the conditions are generally ideal. The initiation of braking is already preset at a point on the track, and I would think that the on board testing computer electronically recognizes the instant of braking. This would eliminate the reaction times and some distance.

Jul 18, 2007 | 08:47 PM

Bad Kitty

Racer

Joined: Dec 2006

Posts: 336

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From: Columbia MO

i had to stop on the interstate for a car in front of me who slammed on his brakes. this was the first hard stop i made in the car and i have to say i was impressed. it stopped right now.

the only trouble was the expedition behind me almost ran over me......