jomukuk wrote:
Quote:
Swindon Cameras? - Wiltshire & Swindon Safety Camera Unit – Press Statement.
(...)
Over the 12 months to the end of April, 2008, the collision statistics for roads across the Wiltshire and Swindon area, including camera sites indicated a 30.25% reduction in the number of people killed or seriously injured when compared with the baseline data required by the Department for Transport before Safety Camera enforcement began. For children under 16 years the reduction is 47.7%
At the Core camera sites in isolation, the collision statistics indicated a 69% reduction in the number of people killed or seriously injured. For children under 16 years the reduction is 58.5%
Focusing only on Swindon's Core sites, in the three years before camera enforcement was introduced the average number of persons killed or seriously injured was 19 per year. Since safety camera enforcement began at these sites the average number of persons killed or seriously injured is 5.9 per year, a reduction of 69%
10 of Swindon's Core sites have not had a single fatal or serious injury collision since they were established.
(...)
This all sounds good but I miss the comparison with reference situations that do not have the camera's.
Here in B the most recent report (as far as I know at least) on the effect of camera's cannot find a significant effect on accidents with people killed or injured compared to overall trend. Only on accidents with only material damage it seems there is a significant effect of 20%.
The reference is:
http://www.steunpuntmowverkeersveilighe ... re/114.pdf .
It is in Dutch but the summary is in English.
In the summary it says results from abroad prove effects of 30% on accidents with people killed or injured as an average result.
I would like to ask to who reads this for references on investigatons / studies that just underpin that thesis.