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stopping distances... hat a load of cobblers!

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Old 21-09-2004, 01:43 PM
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Jim Galbally
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Default stopping distances... hat a load of cobblers!

http://www.highwaycode.gov.uk/09.shtml

aparently it takes 96meters to stop from 70mph...

i say thats complete bollocks

where the hell do they get this shit from?!?!
Old 21-09-2004, 01:44 PM
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Rhys
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They still use the same data from cars in like the 60's with drum brakes or something silly like that!!
Old 21-09-2004, 01:56 PM
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Default Re: stopping distances... hat a load of cobblers!

Originally Posted by Jim Galbally
where the hell do they get this shit from?!?!

1970!
Old 21-09-2004, 01:57 PM
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Fudgey
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and it was a ford anglia iirc
Old 21-09-2004, 01:57 PM
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Adam_BlackRS
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Yeah, as Rhys said, braking distances were done in the 60's/70's so it big time needs a update
Old 21-09-2004, 02:05 PM
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Oranoco
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Yep the figures used to give stopping distances were taken from a Ford Anglia. Jeremy Clarkson did a stopping distanc thing with a Focus a Range Rover and a Ford Anglia. Both the lardy 4x4 and Focus stopped well under the alleged stopping distance. What was concerning was the anglia went past the marker it was sposed to stop at
Old 21-09-2004, 02:30 PM
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where the hell do they get this shit from?!?!

Your technical hotline?

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Old 21-09-2004, 02:41 PM
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Jim Galbally
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Phil, Click Here
Old 21-09-2004, 02:59 PM
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Yeah..i fully understand Jim mate..sorry
Old 21-09-2004, 03:09 PM
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I just stopped in 10m at 70mph on my bike when someone decided they wanted priority....

Even my RS would stop quicker than 96m at 70mph and my brakes are total wank!
Old 21-09-2004, 03:12 PM
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Oranoco
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I would think if you just dipped the clutch and rolled from 70mph you'd come to a standstill in less than 96m
Old 21-09-2004, 03:21 PM
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if my 'math' is correct (with i very much doubt @70mph you would have to stop in 3.06 seconds to get to zero after 96m.
doesnt seem THAT far off to me although its hard to imagine just 'how quick' you stop
Old 21-09-2004, 03:25 PM
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Jim Galbally
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phil, your maths is wrong becasue youre not working out the fact that as youre braking the car is decelerating and hence covering less distance
Old 21-09-2004, 03:28 PM
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fuck that then..
Old 21-09-2004, 03:28 PM
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True enough the braking distances are not accurate but for safety's sake I don't think that there is much point in changing them. Think about the number of folk you see that are right up the back of someone or worse yourself. It's a really dangerous and annoying habit, especially when it's pissing down, which it invariably is in this country!
Old 21-09-2004, 03:29 PM
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so it would take 3.06 seconds JUST TO COVER 100m that means the true figure must be something like 9 seconds
Old 21-09-2004, 03:33 PM
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well i know that i can brake from 130 in less than 250 meters which is when i road angel went off and i broke and never got flashedm oh and it was a 50 too
Old 21-09-2004, 04:15 PM
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well for example..... an evo 6 will go from 60 to 0 in just over 2 seconds , and someone do the calcs... is well below 96 m. but if you read the highway code carfully it does say these are the "safe recommended" distances - if everyone obided by the,m - i recokon there would never be anohter motorway pile up again
Old 21-09-2004, 04:23 PM
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Keith B
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I think the problem is that by revising the figures and telling people you can now stop in say 70m rather than 100m may mean that some people drive faster or brake later - so keeping the figures the same may be an added safety margin. Same reason why the 70mph limit doesnt go uo even though cars can brake and handle better.
Old 21-09-2004, 06:10 PM
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bollocks, if the figure's were more accurate people may actually respect them.
Old 21-09-2004, 06:24 PM
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richm
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Originally Posted by Paul J
bollocks, if the figure's were more accurate people may actually respect them.
who on here honestly knows what the published figures are without looking them up.... ?

or indeed knows what their car WILL do in varying conditions...
Old 21-09-2004, 07:27 PM
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I think you will find the test Clarkson did a while ago was with a porker 911, pug 106 gti and a range rover, the pug stopped in the shortest distance (very light weight car) around just over half the distance, The porker was next a few feet away where as the range rover just mananged to do it in the distance stated in the higway code.

If you think some 2ton 4x4 with wide knobbly tires and a contact patch that is more suited to going through mud, than accelerating and braking is going to stop in a nice short distance, then I hope you don't have one sitting up your backside when you unleash the power of your ap 6pots.
Old 21-09-2004, 07:42 PM
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Originally Posted by buzznwood
I think you will find the test Clarkson did a while ago was with a porker 911, pug 106 gti and a range rover
That may be so but i have the one with the Anglia and the Focus and Range Rover on DVD so he done that aswell
Old 21-09-2004, 07:53 PM
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ballin
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They still use the same data from cars in like the 60's with drum brakes or something silly like that!!
i think they actually put an umbrella out the window in those days
Old 21-09-2004, 09:10 PM
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Shings
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Right please have a read.

Last week I went on a speed awareness course.

Clarkson has indeed done the test and proved the stopping distances to be fairly accurate, much to my suprise. A driving instructor I know also takes great pleasure in telling me this.

The course I went on put it down to todays living, they say YES cars stop quicker no problem.
But in todays world we have too many things going on in our lives, we pay less attention to the road we have kids in the car, loud stereo's on ABS ete et etc... The list is endless.
They said your reaction time goes up and therefore overall stopping distance and then showed some videos and graphics and I am quite happy that its true.

Jim, if you try and stop from a set distance and you know its coming up you will stop quicker- esp if u have anything about you in the driving dept. THis is because you're expecting to have tobrake and are ready for it. However thats not what Highway code stopping distances are about. They are include thinking/reaction time.

Hope this helps

J
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