SafeSpeed wrote:
fixitsan wrote:
I'll try to keep coming back regularly.
What I like is driving, what i don't like is disinformation and to me there seems to be a lot of it from both sides to tell the truth.
Cheers
There's no 'disinformation' coming from here. Ours is a battle to expose the truth.
If you find something you think is wrong, I want to hear about it. More than that, I'll give you my personal promise that I will put it right.
Naturally individual posters are free to express their opinions irrespective of whether they are well founded and right or ill founded and wrong.
I hope I don't come across as illfounded and wrong then !
In a recent broadcast, qhich quoted information sourced from Safespeed, and on the topic of 20mph speed limits, some government statistics were quoted in such a way as to say that the accident rate in 20mph zones is not significantly lower than in 30mph zones.
The argument centred around the use of percentages in their own right, with no details of the size of the sample set, and no mention of the standard deviation, although I would be happy with the sample size information.
I did some digging around, and based ont he 2002 figures I got the following result
20mph zones:
all casualties: 564
killed or seriously injured: 77
percentage killed or seriously injured: 13.7%
30mph zones:
all casualties: 141,959
killed or seriously injured: 18,562
percentage killed or seriously injured: 13.1%
Therefore, clearly , in terms of percentages, there is a greater percentage of people killed as a result of an injury accident in a 20mph zone.
However , if I were to make that claim and suggest it is representative of the truth I would be wrong to do that because before someone can be killed there has to ba an accident first of all, and while no accident is acceptable, when you look at the number of injury accidents which took place I see that only 564 injury accidents happened on 20mph roads, compared to 141,959 on 30mph roads, which suggests that 20mph roads are far safer.
I appreciate that the number of 20mph road miles is much lower than the number of 30mph road miles, but when I see those figures produced as a part of some sort of shock and awe tactic I just get turned off and assume that because the full picture isn't being represented that some obfuscation is taking place.
I'll hang around and see what the general attitude is to this