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Steve
 Post subject: Thread split
PostPosted: Sun Oct 31, 2010 17:11 
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Posts regarding ABS warranted their own thread, which have been split off into here.
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RobinXe
PostPosted: Sun Oct 31, 2010 17:17 
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Salvaged from split thread:

I wrote:
As for the point about flow, and lorries being a greater culprit, I would disagree. Whilst "elephant racing" does play a significant role in breaking down the flow and potentially causing "shockwaves" during busier periods, I certainly don't think it is anywhere near as widespread as "middle lane moroning", and long queuing for overtakes, essentially not keeping in the leftmost suitable lane. So often we see road capacity wasted in the nearside lanes, for extended periods and distances, at a time when we are desperately short, so much so that "hard shoulder running" schemes are featuring heavily in the list of current road improvement projects.

I posit that speed differential is actually of benefit during busy periods, when a block of traffic remaining in the same roadspace for long periods would be more prone to "shockwaving".

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Pete317
PostPosted: Sun Oct 31, 2010 17:55 
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RobinXe wrote:
I posit that speed differential is actually of benefit during busy periods, when a block of traffic remaining in the same roadspace for long periods would be more prone to "shockwaving".


Agreed.
Another side-effect of small or non-existent speed differentials on busy motorways is that it can often lead to excessive time required to change lanes - not particularly good when your exit's coming up :shock:

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graball
PostPosted: Sun Oct 31, 2010 19:44 
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Of course, the knitting commitee at road safety experts, Brake, know better than us mere drivers.

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My views do not represent Safespeed but those of a driver who has driven for 39 yrs, in all conditions, at all times of the day & night on every type of road and covered well over a million miles, so knows a bit about what makes for safety on the road,what is really dangerous and needs to be observed when driving and quite frankly, the speedo is way down on my list of things to observe to negotiate Britain's roads safely, but I don't expect some fool who sits behind a desk all day to appreciate that.
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malcolmw
PostPosted: Sun Oct 31, 2010 22:32 
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The Huddersfield Examiner comments are amazingly anti-Brake. Perhaps the locals are fed up with the moralising twaddle being reported.

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The views expressed in this post are personal opinions and do not represent the views of Safespeed.
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Steve
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PostPosted: Mon Nov 01, 2010 14:35 
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Posts regarding British Summer Time have been split off into a new thread here.
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guron83
PostPosted: Mon Nov 01, 2010 20:31 
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Der Rote Baron wrote:
Its good to see that the UK leads the world in something other than teenage pregnacy rates.
Yes, and if we want to stop leading the world in teenage pregnancy rates, there's an easy solution. Get rid of Scotland :D
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CJG
PostPosted: Thu Nov 04, 2010 12:01 
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:gatso2:

Vehicles travelling at 80mph or more take far longer to stop and will hit harder in a collision.

Well, duh! That would come under the speed, thinking distance and stopping distance as one might find in the Highway Code. Or at least it was the last time I looked. Speed :30:, thinking distance, 45 feet, stopping distance 75 feet

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botach
PostPosted: Fri Nov 05, 2010 00:33 
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CJG wrote:
:gatso2:

Vehicles travelling at 80mph or more take far longer to stop and will hit harder in a collision.

Well, duh! That would come under the speed, thinking distance and stopping distance as one might find in the Highway Code. Or at least it was the last time I looked. Speed :30:, thinking distance, 45 feet, stopping distance 75 feet


PROBLEM 1) - "THINKING "- in the days of the Moggy Minor( where these were derived), drivers were forced to THINK .

problem 2) - With the brakes of the era of MOGGY Minor - 75 feet might be about right.


SO- PERHAPS ,we need a NEW idea of thinking distance ( Brake has-seen to that), coiled with a shorter stopping distance ( due to ABS, FOR NUMPTIES - BUT NOT ACKNOWLEDGED BY BRAKE) ,which might INCREASE the stopping distances ( especially of the home run mums) . :wink: :roll: :D

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CJG
PostPosted: Sun Nov 07, 2010 00:35 
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:gatso2: I couldn't agree more. It just seems to be outmoded nonsense now. A major rethink is needed. We're not living in the days when Ford Anglias and Morris Minors are on our roads.

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Toltec
PostPosted: Sun Nov 07, 2010 21:54 
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CJG wrote:
:gatso2:

Speed :30:, thinking distance, 45 feet, stopping distance 75 feet


I thought it was thinking 30ft and stopping 45ft with overall being 75ft according to the HC.

My observations of general driving make me estimate a figure of between 1 and 3 seconds* for noticing there is a problem and starting to do something about it rather than the 0.68 seconds used by the HC. On the other hand a modern car can stop in around 75% of the HC figures.

I have a suspicion that the HC figures had more than a little to do with using nice round numbers that gave reasonable values in feet when inputting values in mph.

* Drivers seem to spot things that are in their path rather faster than ones that are going to be in their path.

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