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New Zealand keeps fairly good records which can be downloaded here: http://www.transport.govt.nz/assets/Uploads/Research/Documen... page 62 lists the percentage of crashes, crashes with injuries and crashes with fatalities. Speed is constantly found in around 30% of fatal crashes.

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Saying speed is found as a factor in around 30% of fatal crashes doesn't really say much as to the effectiveness of these sorts of measures. I mean, right off the bat I have to ask - what is the overlap between "people in fatal crashes with speed as a factor" and "people who receive automated speeding tickets".

I think as a percentage it would be unimaginably tiny which supports the assertion that it is misplaced enforcement if safety is actually the goal.

And when you consider that more than 30% of drivers are typically speeding on many/most roads...

If only we were so lucky. 30% of drivers in NZ drive 20km/h below the speed limit on the motorway is more like it :|

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