Friday, October 06, 2006

Brilliant - Speed Camera's

Thank you to this person who has gone to all the time and effort to show how polititians corrupt statistics to justify their revenue raising tactics with speed camera's.

This shows that speed camera's just don't work or save lives in my book but as the author is careful he/she is calling for more studies taking out the government bias towards speed camera's well I would call it governments addiction to raising revenue.

I'll put it simply, if speed camera's were as effective as the governments make out then we would have reduced the road toll significantly but as it stands the road toll has not decreased at all and with hundreds of thousands of speed camera's in Australia alone that should be evidence enough they don't work. In fact with falling fuel prices we will actually see the road toll rise dramatically in the very near future to record levels.

And further this study highlights why police should have no say in road safety! They are trained in law enforcement not road safety or for that matter statistical analysis.

Too bad the Safety Institute of Australia allows members that can't be bothered getting qualified and haven't the confidence to prove their competence becuase if they did they would be jumping up and down at the damage speed camera's have done to people's opinions in safety.

But then the damage the SIA has done by allowing unqualified people to lead it, has made the safety field unprofessional.

Survey The Conclusion

Speed Cameras may reduce accidents; they may increase them. However there is very little data which isn't flawed by regression to the mean and selection effect problems. Until someone does a decent study free from selection effects designed to isolate only the effects of the cameras we're unlikely to find out anything useful.

More concerning to me is that I have seen no evidence that anyone participating in the implementation of speed camera programs has the slightest idea of how to judge the results. Why are we installing cameras at considerable expense to the public and the driver at the bequest of people who can't measure if it did any good? More seriously, why are we letting people carry out expensive experiments with allegedly life or death consequences with no scientific training to devise the experiment or statistical training to analyse the results?

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