The letters pages of the transport professionals’ fortnightly, Local Transport Today, have recently carried an unprecedentedly long correspondence about the statistical analysis of the effects of speed cameras. We welcome in-depth statistical analysis of “road safety” interventions such as cameras. However, our take on how results should be interpreted – and indeed, what “works” actually means in the overall context of reducing road danger over time – is different from most of the participants. Here is our contribution to – and comments on – the debate: Continue reading
Do speed cameras work?
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