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PostPosted: Mon Aug 07, 2006 16:30 
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http://www.dft.gov.uk/stellent/groups/d ... 612262.pdf

I have to pull this to bits asap. Any comments appreciated.

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PostPosted: Mon Aug 07, 2006 16:34 
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Location: not too far in front, not too far behind.
IIRC 20mph limits are unenforceable as speedos do not have to register an accurate speed under 25mph?

[edited to add]

ah yes, found it: http://www.opsi.gov.uk/si/si2001/20010025.htm#sch3

The Motor Vehicles (Approval) Regulations 2001 wrote:
section 19:
1. The vehicle shall be fitted with a speedometer capable of indicating speed in mph at uniform intervals not exceeding 20 mph at all speeds up to the maximum speed of the vehicle and capable of being read by the driver at all times of the day or night.

2. For all true speeds up to the design speed of the vehicle, the true speed shall not exceed the indicated speed.

3. For all true speeds of between 25 mph and 70 mph (or the maximum speed if lower), the difference between the indicated speed and the true speed shall not exceed -

V/10 + 6.25 mph

where V = the true speed of the vehicle in mph.


actually I'm not sure if this backs up my argument or disproves it?

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PostPosted: Mon Aug 07, 2006 16:42 
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Where is the EVIDENCE that any of these reduced limits will work

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Speed limit sign radio interview. TV Snap Unhappy
“It has never been the rule in this country – I hope it never will be - that suspected criminal offences must automatically be the subject of prosecution” He added that there should be a prosecution: “wherever it appears that the offence or the circumstances of its commission is or are of such a character that a prosecution in respect thereof is required in the public interest”
This approach has been endorsed by Attorney General ever since 1951. CPS Code


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PostPosted: Mon Aug 07, 2006 16:46 
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page 13: states that 20limits need approval from the secretary of state, I thought that had been passed down to HA's

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Speed limit sign radio interview. TV Snap Unhappy
“It has never been the rule in this country – I hope it never will be - that suspected criminal offences must automatically be the subject of prosecution” He added that there should be a prosecution: “wherever it appears that the offence or the circumstances of its commission is or are of such a character that a prosecution in respect thereof is required in the public interest”
This approach has been endorsed by Attorney General ever since 1951. CPS Code


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PostPosted: Mon Aug 07, 2006 16:59 
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page 32 "Quiet lanes statutory instrument" All this has been drawn up in secret without consultation
well first I have heard of it! but then I found it here... &... found sign here

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Speed limit sign radio interview. TV Snap Unhappy
“It has never been the rule in this country – I hope it never will be - that suspected criminal offences must automatically be the subject of prosecution” He added that there should be a prosecution: “wherever it appears that the offence or the circumstances of its commission is or are of such a character that a prosecution in respect thereof is required in the public interest”
This approach has been endorsed by Attorney General ever since 1951. CPS Code


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PostPosted: Mon Aug 07, 2006 17:10 
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On page 11, point 35 it states:

Quote:
However, evidence suggests that when traffic is travelling at constant speeds, even at lower level, it may result in shorter and more reliable journey times


A couple of things with that quote. Firstly, what evidence? Secondly, how does a lower speed limit suddenly mean that we're all going to be driving at a constant speed? Infact introducing limits on certain parts of roads as they're proposing is going to cause people to slow down thus resulting in speeds that are not constant.


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PostPosted: Mon Aug 07, 2006 17:25 
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I don't see the problem with this document, at all. Looks like common sense (for once).


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PostPosted: Mon Aug 07, 2006 17:31 
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Paragraph 36 re changing from using 85th percentile to mean speeds:

Quote:
36. Mean speeds and 85th percentile speeds (the speed at or below which 85% of the traffic
is travelling) are the most commonly recorded characteristics of speed. Traffic
authorities should continue to routinely collect and assess both, but mean speeds should
be used as the basis for determining local speed limits. This is a change from the use of
85th percentile speed in Circular Roads 01/93 (DoT, 1993). As explained in paragraph
17, the use of mean speeds is underpinned by extensive research demonstrating the well
proven relationship between speed and accident frequency and severity. They also
reflect what the majority of drivers perceive as an appropriate speed to be driven for the
road, and are felt to be easier for road users themselves to understand.

One interesting point is that the document accepts that where correct speed limit signs are not present, no offence of speeding is committed - people are not "getting off on a technicality":

Quote:
58. Care should be taken to ensure that all signs displaying a mandatory speed limit either
comply fully with the regulations or have been specially authorised. Signs that do not
strictly follow the Regulations or have not been specially authorised are not lawfully
placed. A person who fails to comply with a speed restriction shown in a traffic sign is
generally charged with an offence under Section 36 of the Road Traffic Act 1988.
However, where the sign is not lawfully placed, no offence is committed by the person
speeding under that section, resulting in failed prosecutions. Traffic authorities should
therefore remove any such signs, bring them into compliance with the Regulations or
obtain special authorisation.

One particular concern is that by applying a speed assessment framework that looks at casualty rates, we will end up with inconsistent limits on rural roads as roads of similar physical characteristics may well have different accident rates.

It also says "Lower speeds benefit all urban road users". Er, how do they work that out? :banghead:

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PostPosted: Mon Aug 07, 2006 17:50 
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PeterE wrote:
It also says "Lower speeds benefit all urban road users". Er, how do they work that out? :banghead:


Because if a cyclist rides across your path or a pedestrian jumps out from behind a car, if you hit them at a lower speed, you're going to do them less damage than the brigade who make you fear for your life as they pass you with inches to spare at 40mph.


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PostPosted: Mon Aug 07, 2006 17:51 
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I've already given quotes to the Mail and the Express and issued the following PR at 17:29 this afternoon:

PR341: New speed limit advice: flawed and deadly

news: for immediate release

Initial reaction.

Department for Transport has released today their guidance for setting local
speed limits. Safe Speed called the guidance 'flawed and deadly' because it is
founded on bad science and tends to de skill driving.

* Basing speed limits on average traffic speeds as suggested in the new advice
tends to put around half of all drivers outside the law.

* At the foundation of the new guidance is the idea that reducing speed by 1mph
leads to 5% fewer crashes. The science employed is just plain wrong and the
claimed speed accident relationship does not exist.

* Reduced speed limits, where they are unnecessary, de skill driving, and if
our drivers employ less skill, more of us will die on the roads.

Paul Smith, founder of the Safe Speed road safety campaign
(www.safespeed.org.uk) said: "The new guidance is based on faulty foundations
and will ultimately cause road deaths to increase. If we want safer roads we
must look at the psychological factors that underlie crashes. By tending to de
skill driving these proposals will make road safety worse."

"Department for Transport is clearly blinded by its own 'speed kills'
propaganda and is not fit for purpose. It does not understand the process of
safe driving and as such is not competent to devise road safety policy."

<ends>

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PostPosted: Mon Aug 07, 2006 17:56 
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mpaton2004 wrote:
PeterE wrote:
It also says "Lower speeds benefit all urban road users". Er, how do they work that out? :banghead:

Because if a cyclist rides across your path or a pedestrian jumps out from behind a car, if you hit them at a lower speed, you're going to do them less damage than the brigade who make you fear for your life as they pass you with inches to spare at 40mph.

But surely that is covered by "travelling at or below 30 mph in areas with restricted visibility and many pedestrians and cyclists benefits all road users".

If traffic is already travelling at or below 30 mph, will lower speeds still benefit all road users? What about 29 mph?

It's a demonstrably nonsensical blanket statement.

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PostPosted: Mon Aug 07, 2006 21:38 
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My my current car (Passat TDI auto), will not change into 3rd gear until about 22 mph.

So, given this means higher RPM for less distance travelled, I don't get how reducing a limit to 20 from 30 (for example), will result in less C02 emissions and quieter roads.

Or am I just missing something ?


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PostPosted: Tue Aug 08, 2006 00:58 
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PeterE wrote:
mpaton2004 wrote:
PeterE wrote:
It also says "Lower speeds benefit all urban road users". Er, how do they work that out? :banghead:

Because if a cyclist rides across your path or a pedestrian jumps out from behind a car, if you hit them at a lower speed, you're going to do them less damage than the brigade who make you fear for your life as they pass you with inches to spare at 40mph.

But surely that is covered by "travelling at or below 30 mph in areas with restricted visibility and many pedestrians and cyclists benefits all road users".

If traffic is already travelling at or below 30 mph, will lower speeds still benefit all road users? What about 29 mph?

It's a demonstrably nonsensical blanket statement.


It's not really nonsense. Lower speeds generally generate a much nicer environment. Particularly in cities and town centres, which they are talking about.

Again, tonight when driving at a reasonable speed between 20-30 indicated on a 30 limit (slower past parked cars on one side, and approaching traffic on the other, children playing on bicycles on the pavement) yet again I get a numpty in a Vectra tailgating me having bombed it up behind me which took up more of my attention than I wanted to give in the situation.

They're all over the place, and they're not "reasonable people obeying the spirit of the law" - they're dangerous idiots who don't give a toss. That's why we need to make people drive slower and less aggressively.

We state we want more people to drive to IAM standards/RoSPA, etc. What happens if you exceed the speed limit when taking an assessment for these accreditations? You fail.


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PostPosted: Tue Aug 08, 2006 06:46 
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mpaton2004 wrote:
... Lower speeds generally generate a much nicer environment. Particularly in cities and town centres, which they are talking about.

Again, tonight when driving at a reasonable speed between 20-30 indicated on a 30 limit (slower past parked cars on one side, and approaching traffic on the other, children playing on bicycles on the pavement) yet again I get a numpty in a Vectra tailgating me having bombed it up behind me which took up more of my attention than I wanted to give in the situation.


He was probably trying to drive at exactly 30mph. Seriously. There are millions of them now - and it's getting much worse.

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PostPosted: Tue Aug 08, 2006 07:44 
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Quote:
they're dangerous idiots who don't give a toss.


... and won't take a blind bit of notice of any newly changed limits thereby rendering them pointless.

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PostPosted: Tue Aug 08, 2006 07:48 
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SafeSpeed wrote:
He was probably trying to drive at exactly 30mph. Seriously. There are millions of them now - and it's getting much worse.

so does that mean you now accept my claim that the majority of people are attempting to drive down my "narrow street with parked cars either side" at 30mph?


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PostPosted: Tue Aug 08, 2006 07:56 
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johnsher wrote:
SafeSpeed wrote:
He was probably trying to drive at exactly 30mph. Seriously. There are millions of them now - and it's getting much worse.

so does that mean you now accept my claim that the majority of people are attempting to drive down my "narrow street with parked cars either side" at 30mph?


Was that the claim? I remember it as something like 'the majority drive like nutters'. I don't have time to dig it out right now.

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PostPosted: Tue Aug 08, 2006 10:03 
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SafeSpeed wrote:
Was that the claim? I remember it as something like 'the majority drive like nutters'. I don't have time to dig it out right now.

well that's the fine print. What I said was that most people seem to be attempting to drive down quiet, narrow, low visibility residential roads (in my area) at 30mph.


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PostPosted: Tue Aug 08, 2006 16:42 
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mpaton2004 wrote:
PeterE wrote:
mpaton2004 wrote:
PeterE wrote:
It also says "Lower speeds benefit all urban road users". Er, how do they work that out? :banghead:

Because if a cyclist rides across your path or a pedestrian jumps out from behind a car, if you hit them at a lower speed, you're going to do them less damage than the brigade who make you fear for your life as they pass you with inches to spare at 40mph.

But surely that is covered by "travelling at or below 30 mph in areas with restricted visibility and many pedestrians and cyclists benefits all road users".

If traffic is already travelling at or below 30 mph, will lower speeds still benefit all road users? What about 29 mph?

It's a demonstrably nonsensical blanket statement.

It's not really nonsense. Lower speeds generally generate a much nicer environment. Particularly in cities and town centres, which they are talking about.

No, you're completely missing the point. If existing speeds are irresponsible or dangerous, then lower speeds may benefit all road users. If existing speeds are already appropriate, then lowering them will bring an overall disbenefit. To make a blanket statement, without qualification, that "lower speeds benefit all urban road users" is 100% unmitigated cack.

If existing speeds are 2 mph, will people benefit from reducing them to 1 mph? Of course they won't.

In fact, I would have said that so long as it can be achieved without compromising safety and producing unacceptable noise levels, higher vehicle speeds would benefit all urban road users by allowing journeys to be completed more quickly.

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Any views expressed in this post are personal opinions and may not represent the views of Safe Speed


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PostPosted: Tue Aug 08, 2006 16:47 
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mpaton2004 wrote:
It's not really nonsense. Lower speeds generally generate a much nicer environment. Particularly in cities and town centres, which they are talking about.


Hmm, anti-car traffic light policy in Southampton means that average speeds are low, but I wouldn't say that a queue of idling cars creates a nice environment, or maybe they are talking about the centre of traffic light junctions which are all too often empty thanks to excessively long intergreens.


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