Ben Webster, Speed camera benefits overrated, in The Times, London, 16 dicembre 2005. URL consultato il 1º settembre 2019 (archiviato dall'url originale il 7 ottobre 2008).
«The main report says that fixed cameras reduce deaths and serious injuries by 50 per cent and mobile cameras by 35 per cent. It calculates that cameras prevent 1,745 deaths or serious injuries a year across Britain. But once the regression to the mean was taken into account, fixed cameras were found to reduce deaths and serious injuries by only 873, or 24 per cent for fixed and 17 per cent for mobile cameras. While still impressive, these reductions are lower than could be achieved by other road safety measures.»
