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Merseyside road safety failures

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Best practice options: 20mph speed limits
It has been clear for some time that choosing 30mph as the default urban speed limit was a blunder, resulting in large numbers of deaths and injuries, and a public health disaster from the deterrence of walking and cycling.

Lowering the speed limit in residential areas from 30mph to 20mph:
  • is effective in reducing casualties e.g. the 40% reduction in road casualties in the study of London's 20mph zones [1]
  • works well in the Netherlands (and elsewhere) where the 30kph limits contribute to the large numbers of children walking and cycling and the healthy population.
  • has the support of a large proportion of the population e.g. in the 2015 British Social Attitudes Survey [2]:

The figures for 20mph speed limits were:
Strongly in favour / In favour68
Neither in favour nor against15
Against / Strongly against13
Canít choose / Not answered4

So, 20mph limits with compliance should by now be the norm in residential areas in the UK.

References

[1] www.bmj.com/content/339/bmj.b4469
[2] British Social Attitudes Survey 2015: Public attitudes towards transport (2017) Department for Transport (page 27)
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/586193/british-social-attitudes-survey-2015.pdf
Percentages and changes over time can be downloaded from https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/640245/att0359.ods
[3] DfT Circular 01/2013 Setting local speed limits (2013) https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/63975/circular-01-2013.pdf




Last updated: 17 Jun 2018