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PostPosted: Thu Dec 21, 2006 16:13 
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Dondare wrote:
Sixy_the_red wrote:
Don. Seriously for a moment.

You state that the 30mph limit is in place on the off chance that a pedestrian may step off the pavement, and if a pedestrian DOES step out infront of a car and is injured, its automatically the motorist's fault if he/she was 'speeding'.

The appropriate and safe speed for the conditions is the speed at which you can stop in the distance you KNOW to be clear. If there is a chance that a pedestrian may step out infront of you, then the distance you KNOW to be clear must be the distance to the pedestrian. Therefore you adjust your speed accordingly. There comes a point where (unless you slow to zero) the pedestrian enters the distance in which you cannot stop. What then? The pedestrian has just as much responsibility for not stepping into the road as the motorist does for maintaining an appropriate speed.

If speed cameras are the only method of enforcement in certain areas then the enforcement is sadly lacking. I think you'll find that most posters here would sooner see 5 properly trained traffic police than a single camera.

There are two types of pedestrian:- those you can see and those you can't. They conceal themselves behind parked vans and in bus shelters and then rush out. Not always, but enough to make a cyclist or motorist wary of any roadside object large enough to hide behind. The sort you can see are no better; with all the self-preservation instincts of a lemming trying for a miscarriage they'll stand in plain view, perhaps looking straight at you or perhaps looking the wrong way before stepping out. Riding or driving at 1 mph is not an option, but going at a speed which'll probably kill them isn't something you should consider doing either. If you have the attitude that anyone who can't see you coming or recognise the danger deserves to die, then you shouldn't be driving. The actual danger comes from the 1 ton block of steel that you've brought onto the road, and it's that fact which makes you responsible for the safety of others, the least you can do is drive at a speed which, according to official figures, gives them a 50% chance of surviving. If you decide to go faster then you've made a conscious decision to act in a way that will probably get someone killed in the event of such an accident.

You will never get enough police on the road to replace the cameras, but if you did you can bet your licence that they'd be just as unforgiving to speeders as PC Gatso.


Anyone who drives at a speed which gives a pedestrian a 50% chance of survival should be locked up.

But with 33,281 pedestrians in recorded crashes in 2005 and 671 killed we're clearly not doing it very often.

Oh, and those figures apply to all speed limits.

Even on non-built up roads (i.e. speed limit greater than 40mph and NOT a motorway) 146 / 1374 were killed.

Anyway, the idea that a 40mph road is deadly to pedestrians is simply absurd.

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PostPosted: Thu Dec 21, 2006 16:17 
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Dondare wrote:
gopher wrote:

But why is enforcing speed limits so important when the breaking of them features so little in crash causation? Would not efforts be better spent elsewhere?

For one thing it's not that much effort. Install a camera, check the film, post a letter.
For another the perceived risk is high. so cameras reasure people.


1. is not a reason, there's not much effort involved in stabbing yourself with a fork, that's no reason to do it.

2. What risk is percieved as high, and in what way's do camera's reassure people that all is ok? Are you saying that as long as drivers stick to the speed limit then all is ok? That does fit in with your idea that pedestrians should only be given a 50% chance of survival on the roads. What is it you don't like about them?

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PostPosted: Thu Dec 21, 2006 16:27 
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Johnnytheboy wrote:
why is a :30: limit?



Probably because it's in a city and there are lots of people living and working nearby who don't want their lives blighted by traffic noise. Also, if it was :40: people would do :50:

For such a short length of road, what's they hurry? What is so important about your time that you need to get 1 mile down the road 15 seconds quicker to the detriment of everyone else? Just leave 15 seconds earlier if it matters that much.


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PostPosted: Thu Dec 21, 2006 16:30 
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gopher wrote:
Dondare wrote:
Sixy_the_red wrote:
Don. Seriously for a moment.



The appropriate and safe speed for the conditions is the speed at which you can stop in the distance you KNOW to be clear. If there is a chance that a pedestrian may step out infront of you, then the distance you KNOW to be clear must be the distance to the pedestrian. Therefore you adjust your speed accordingly. There comes a point where (unless you slow to zero) the pedestrian enters the distance in which you cannot stop. What then? The pedestrian has just as much responsibility for not stepping into the road as the motorist does for maintaining an appropriate speed.

Dondare wrote:
The actual danger comes from the 1 ton block of steel that you've brought onto the road, and it's that fact which makes you responsible for the safety of others, the least you can do is drive at a speed which, according to official figures, gives them a 50% chance of surviving.


Hmm, I don't think that's a good idea, how about driving at a speed which means that you are able to stop before hitting them, in my book a much better option than hitting htem at all, but you're entitled to your point of view, but it sounds dangerous to me.




The point being made was that in order to remove any possibility of hitting a pedestrian you have slow to zero; since this is not practical you have to assume the pedestrian has equal responsibility.
My point is that the driver has to take responsibility for the safety of the pedestrian, and since at any finite speed the possibility of an accident cannot be ruled out then the driver should keep to a speed which will not make the pedestrian's death probable in the event of such an accident: which we are told means keeping it below 30mph. Which just happens to be the speed limit in pedestrian-rich environments.


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PostPosted: Thu Dec 21, 2006 16:32 
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Dondare wrote:
gopher wrote:

But why is enforcing speed limits so important when the breaking of them features so little in crash causation? Would not efforts be better spent elsewhere?

For one thing it's not that much effort. Install a camera, check the film, post a letter.
For another the perceived risk is high. so cameras reasure people.


Point 1. No, its not much effort, but then again its only impacting on 5% (12% of deaths) of the problem.

Point 2. No, they DISTRACT drivers when they should be looking at the road, not their speedo.

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PostPosted: Thu Dec 21, 2006 16:35 
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gopher wrote:
That does fit in with your idea that pedestrians should only be given a 50% chance of survival on the roads. What is it you don't like about them?


No, I'm saying that pedestrians should not be given a less-than-50% chance of survival. I'm not arguing that you have to drive at 30, simply that you shouldn't be going faster than that.


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PostPosted: Thu Dec 21, 2006 16:38 
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Ru88ell wrote:
Johnnytheboy wrote:
why is a :30: limit?



Probably because it's in a city and there are lots of people living and working nearby who don't want their lives blighted by traffic noise.


Department for Transport agrees that speed limits exist for safety reasons. If we start using speed limits for 'environmental' reasons all sorts of nasty things start to happen (two quick examples):

- It really isn't legitimate to endorse a driving licence for a noise violation
- Respect for speed limits set for safety reasons will be damaged

Ru88ell wrote:
Also, if it was :40: people would do :50:


No they wouldn't. That's just rubbish. Try this google (I haven't followed any of the links) http://www.google.com/search?&q=%2B%22e ... +limits%22

Ru88ell wrote:
For such a short length of road, what's they hurry? What is so important about your time that you need to get 1 mile down the road 15 seconds quicker to the detriment of everyone else? Just leave 15 seconds earlier if it matters that much.


It shouldn't be a question of 'hurry', it must be a question of appropriate speed.

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PostPosted: Thu Dec 21, 2006 16:38 
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Dondare wrote:
Dondare wrote:
Sixy_the_red wrote:
Don. Seriously for a moment.



The appropriate and safe speed for the conditions is the speed at which you can stop in the distance you KNOW to be clear. If there is a chance that a pedestrian may step out infront of you, then the distance you KNOW to be clear must be the distance to the pedestrian. Therefore you adjust your speed accordingly. There comes a point where (unless you slow to zero) the pedestrian enters the distance in which you cannot stop. What then? The pedestrian has just as much responsibility for not stepping into the road as the motorist does for maintaining an appropriate speed.

Dondare wrote:
The actual danger comes from the 1 ton block of steel that you've brought onto the road, and it's that fact which makes you responsible for the safety of others, the least you can do is drive at a speed which, according to official figures, gives them a 50% chance of surviving.


Hmm, I don't think that's a good idea, how about driving at a speed which means that you are able to stop before hitting them, in my book a much better option than hitting htem at all, but you're entitled to your point of view, but it sounds dangerous to me.




The point being made was that in order to remove any possibility of hitting a pedestrian you have slow to zero; since this is not practical you have to assume the pedestrian has equal responsibility.
My point is that the driver has to take responsibility for the safety of the pedestrian, and since at any finite speed the possibility of an accident cannot be ruled out then the driver should keep to a speed which will not make the pedestrian's death probable in the event of such an accident: which we are told means keeping it below 30mph. Which just happens to be the speed limit in pedestrian-rich environments.


i can't help but think you're agreeing with each other here!

you seem to agree that dropping to 0mph isn't feasible.
sixy seems to say you should reduce your speed in the presence of a hazard.
dondare seems to be saying you should do less (probably much less) than 30 in such a situation.


hmm sorry my quotes seem to have got rather muddled.... hmm wonder if thats any better?


Last edited by ed_m on Thu Dec 21, 2006 16:44, edited 1 time in total.

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PostPosted: Thu Dec 21, 2006 16:40 
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Dondare wrote:
gopher wrote:
That does fit in with your idea that pedestrians should only be given a 50% chance of survival on the roads. What is it you don't like about them?


No, I'm saying that pedestrians should not be given a less-than-50% chance of survival. I'm not arguing that you have to drive at 30, simply that you shouldn't be going faster than that.


And in a :40: ? Or a :60: ?

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PostPosted: Thu Dec 21, 2006 16:43 
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Dondare wrote:
The point being made was that in order to remove any possibility of hitting a pedestrian you have slow to zero;


Well depsnds completely on the situation, on a wide open road with no traffic or parked cars and no pedetrians I would say the chances of hitting a pedestrian would be very low, in the example you gave it's hard to say, but I would say that sixy's comment on being able to stop in the distance you know to be clear is better than just sticking to the speed limit. I mean if you did 30 down my road I expect you'd be lynched before long.

Dondare wrote:
since this is not practical you have to assume the pedestrian has equal responsibility.


You'd like to think so, but the pedestrian may not think this way, better IMO for the driver to take responsibility.

Dondare wrote:
My point is that the driver has to take responsibility for the safety of the pedestrian, and since at any finite speed the possibility of an accident cannot be ruled out then the driver should keep to a speed which will not make the pedestrian's death probable in the event of such an accident:


Ooops sorry, quoted above before reading this in full. Again why do you think it is better to keep to a speed which reduces the likelyhood of death in collision rather than keep to a speed whcih reduces likelyhood of a collision in the first place, am I just thick or confused?

Dondare wrote:
which we are told means keeping it below 30mph. Which just happens to be the speed limit in pedestrian-rich environments.


Deaths can happen at speeds well below 30, a toddler was killed by a car reversing in a car park at around 5 mph, so sorry I keep missing it, I'll try asking another way, how do speed cameras make our road safer?

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PostPosted: Thu Dec 21, 2006 16:47 
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gopher wrote:
Dondare wrote:
My point is that the driver has to take responsibility for the safety of the pedestrian, and since at any finite speed the possibility of an accident cannot be ruled out then the driver should keep to a speed which will not make the pedestrian's death probable in the event of such an accident:


Ooops sorry, quoted above before reading this in full. Again why do you think it is better to keep to a speed which reduces the likelyhood of death in collision rather than keep to a speed whcih reduces likelyhood of a collision in the first place, am I just thick or confused?


hang on here.. aren't these the same thing ?
in the situation being discussed a speed which reduces the likelihood of a collision is going to be much less than 30mph... which surely also reduces the likelihood of death in a collision.


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PostPosted: Thu Dec 21, 2006 16:54 
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ed_m wrote:
gopher wrote:
Dondare wrote:
My point is that the driver has to take responsibility for the safety of the pedestrian, and since at any finite speed the possibility of an accident cannot be ruled out then the driver should keep to a speed which will not make the pedestrian's death probable in the event of such an accident:


Ooops sorry, quoted above before reading this in full. Again why do you think it is better to keep to a speed which reduces the likelyhood of death in collision rather than keep to a speed whcih reduces likelyhood of a collision in the first place, am I just thick or confused?


hang on here.. aren't these the same thing ?
in the situation being discussed a speed which reduces the likelihood of a collision is going to be much less than 30mph... which surely also reduces the likelihood of death in a collision.


It's not quite the same. Dondare is talking about drivers sticking to a speed where in the event of an accident the danger to the pedestrian is negated as much as possible, and quotes the 30mph limit as been a good indicator as 50% will survive a collsion at this speed.

I am saying that I agree with sixy and that choosing a speed where I minimise the risk of any collsion (fatal or otherwise) is a better option. Both speeds in the real world can be either side of a speed limit.

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PostPosted: Thu Dec 21, 2006 17:00 
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SafeSpeed wrote:
It shouldn't be a question of 'hurry', it must be a question of appropriate speed.


...and in my book 'appropriate speed' includes quality of life - for everyone, not just drivers

The difference between 30 and 40 over a mile is neither here nor there. It's 30, so what?

All the more reason to change the layout to lower the perceived safe speed. Any road safety campaigner would agree.

They have recently done this with Stourbridge ring road. By adding a set of lights to allow a filter, and a Toucan crossing elsewhere the vehicle speeds have falled dramatically and transformed the place. Added a little congestion for the benefit of the environment.

Germany has speed limits for environmental reasons, in fact I think our motorways have a limit for just such a reason. We also have :20:'s in UK. I'm trying to get one in my area. Massive local favourable response for it.


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PostPosted: Thu Dec 21, 2006 17:06 
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Ru88ell wrote:
All the more reason to change the layout to lower the perceived safe speed. Any road safety campaigner would agree.

what does the environment have to do with road safety?


Ru88ell wrote:
We also have :20:'s in UK. I'm trying to get one in my area. Massive local favourable response for it.

strangely in the c+ thread on Richmond park they said the new 20 limit has caused chaos (apart from it being enforced on bikes) and they now want it raised back to 30.


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PostPosted: Thu Dec 21, 2006 17:06 
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Pardon the intrusion...

Dondare wrote:
For another the perceived risk is high. so cameras reasure people.


I think this is an important point, and I see Russel has just raised it again. One of the biggest problems we face is getting over the "perception" created by the "speed kills" campaigns.

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PostPosted: Thu Dec 21, 2006 17:06 
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Ru88ell wrote:
SafeSpeed wrote:
It shouldn't be a question of 'hurry', it must be a question of appropriate speed.


...and in my book 'appropriate speed' includes quality of life - for everyone, not just drivers

The difference between 30 and 40 over a mile is neither here nor there. It's 30, so what?

All the more reason to change the layout to lower the perceived safe speed. Any road safety campaigner would agree.

They have recently done this with Stourbridge ring road. By adding a set of lights to allow a filter, and a Toucan crossing elsewhere the vehicle speeds have falled dramatically and transformed the place. Added a little congestion for the benefit of the environment.

Germany has speed limits for environmental reasons, in fact I think our motorways have a limit for just such a reason. We also have :20:'s in UK. I'm trying to get one in my area. Massive local favourable response for it.


There's a housing estate in Port Talbot where 20 mph limits were introduced along with speed bumps and other traffic calming measures much to the applause of the local residents who had campaigned for years. They are now begging the local councel to take them away because noise is up, pollution is up and worst of all their houses are starting to fall apart.

Be careful what you wish for, some wishes come true.

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PostPosted: Thu Dec 21, 2006 17:22 
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johnsher wrote:
what does the environment have to do with road safety?


The 'environment' is where I live. I don't want cars thrashing though it. I don't mind them driving though it carefully and respectfully - I do that myself. But I do it with consideration for my neighbours and other road users. Are you saying that limits should be set ignoring the fact that people live within metres of the highway?

johnsher wrote:
strangely in the c+ thread on Richmond park they said the new 20 limit has caused chaos (apart from it being enforced on bikes) and they now want it raised back to 30.


Of course. Richmond Park is exactly the same as the Old Quarter of Stourbridge isn't it.

http://www.streetmap.co.uk/streetmap.dl ... 00&A=Y&Z=1

http://www.streetmap.co.uk/streetmap.dl ... 00&A=Y&Z=1


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PostPosted: Thu Dec 21, 2006 17:28 
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Ru88ell wrote:
We also have :20:'s in UK. I'm trying to get one in my area. Massive local favourable response for it.


I live in a :20: with speed bumps, and raised junctions. I particularly like raised junctions, because they are flat just at the give way lines, and the surface is different from the rest of the road, front wheels slip on them when it is raining, it is a wonderful feeling to feel your car understeer at less than 10mph :) . I also believe I am one of the few to stay under the limit. Oh I am also one of the few who does not cut the corners at the junctions. My girlfriend nearly had a head on with a person who was cutting a corner and was on her side of the road (yes I also believe the corner cutter was braking the limit)-is a quite road you see 99.95% time no one is coming the other way. I suppose it is all right if it is at a low enough speed. Yes the roads where I live are now safer because of the :20: limit, and slippery speed bumps, it’s wonderful children don’t have to look, when near the road, and drivers can cut corners happily because with such a low speed limit accidents don’t happen at these low speeds.

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PostPosted: Thu Dec 21, 2006 17:33 
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Graeme wrote:

One of the biggest problems we face is getting over the "perception" created by the "speed kills" campaigns.


But I don't buy 'speed kills'. I just think it's reasonable for drivers to be considerate to neighbourhoods when they drive through. Neighourhoods should take preference to cars.

We're getting organised and arranging to stagger parking down the street - obviously making sure that we're parked legally, and allowing plenty of access for emergency vehicles. The net result, and we've tested it with a stopwatch as per Blue Peter, is a reduction in speeds of around 15 mph. It's a start.


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PostPosted: Thu Dec 21, 2006 17:34 
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Ru88ell wrote:
Are you saying that limits should be set ignoring the fact that people live within metres of the highway?

I'm saying that limits, for what they're worth, should be set based on the road conditions. If you choose to live on a major road then that's your choice. You get the benefit of cheaper house prices in exchange for road noise.
If you live on a residential street with lots of parked cars and pedestrians, which from your link it appears you do, then yes, you should expect people to be driving appropriately. For most of us on here, even if your road was NSL, and presuming the hazards above, we'd still be driving down it at below 30mph. What you have to question is why you have people attempting to drive it at 30mph+... could it be that for years they've been told that driving at the speed limit is the only thing they need to do to be safe?


johnsher wrote:
Of course. Richmond Park is exactly the same as the Old Quarter of Stourbridge isn't it.

my point was that people campaigned for a 20mph limit to make the place safer etc, etc etc only to find that the consequences of reducing the limit were far worse than what they had to start with.


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