**Mike** wrote:
However, if you feel that these cameras make people slam on breaks and at camera sites cause accidents, perhaps you could point me in the right direction to the statistics that shows this?
Conveniently there are none, just like there are no statistics for the casualty reduction effectiveness of newly installed: central reservations, pedestrian barriers/underpasses/zebra crossings, road surface/layout engineering, cycle lanes ………
**Mike** wrote:
All I can seem to find online are figures where previously accident hotspots are improving where there is a camera situated.
Of course you would, that’s what the SCPs want you to believe, but thanks to RTTM we (now including you) know they are, at best, exaggerating.
**Mike** wrote:
Regarding the statistics of speed is a contributing factor in 5/6% of accidents, is that before or after the camera’s were introduced??
That was released by the DfT this year, showing the contributory factors of accidents nationally for last year (2005). Do a google on the report to find and examine it for yourself.
**Mike** wrote:
Because if it was a higher percentage before 1993 then perhaps that would suggest these cameras have helped reduce speed and speed related incidents.
Unfortunately no. Speed camera numbers/prosecution have increased exponentially from 1993, you would expect to see some form of exponential related trend in the accident stats, especially in the later years, but there’s no such trend even in the later years.
**Mike** wrote:
I understand it is hard to prove they are helping with accidents on the roads they are situated, and it’s hard to say statistically how many accidents would have happened with or without them, but I see no way of measuring other than taking in to account the difference between accidents in hotspots with cameras and thoughs without.
Not trying to be offensive but you are still at school. You’ll find many SS members are A-level/degree educated in subjects such as statistical maths (such as me). There are ways…
There has never been a complete, independent study of speed camera effectiveness (accounting for RTTM and ‘bias on selection’) simply because the public don’t have access to all the relevant data sets; that alone should be ringing your alarm bells. The only figures we see are those at camera sites and the national figure, the former shows 40-70% drop, the latter showing almost none – why the great disparity?
**Mike** wrote:
I stand by my point, with nothing to provide me with evidence they do more harm than good, how can we justify getting rid of them
Conversely, how can we also justify keeping them?
**Mike** wrote:
especially with fatalities, serious injuries down and being so good with road safety compared to other EU countries at present.
Please qualify that; show me the
trends for other EU countries against the UK since the creation of the SCPs (for the last 5 years).
**Mike** wrote:
I’m by no means closed minded, show me the proof that suggest otherwise and I will change my mind/opinion.
I’ve shown you how speed cameras could only make a maximum of, well, not even 5% improvement. All that dedicated resource for less than 5% of the problem.......