Guidance

Road safety statistics: methodology documents

Methodology notes related to various aspects of published road safety statistics.

From:
Department for Transport
Published
28 November 2024

Documents

Reported road casualties in Great Britain, provisional estimates: methodology note

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Drink-drive statistics methodology note

PDF, 218 KB, 5 pages

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Valuation of road collisions and casualties methodology note

PDF, 25.3 KB, 4 pages

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Valuation of road collisions and casualties 1994 article

PDF, 609 KB, 5 pages

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Survey data on road casulaties methodology note

PDF, 19.5 KB, 2 pages

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Testing for statistically significant changes in road collision and casualty numbers

PDF, 108 KB, 9 pages

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Modelling the impact of weather on road casualty statistics

PDF, 231 KB, 20 pages

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Linking police and hospital data on road casualties in England

PDF, 1.2 MB

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Details

Methodology notes providing further detail of the calculations involved in producing different elements of the published statistics are also available. These include:

  • Provisional in-year casualty estimates
  • Drink-drive statistics
  • Valuation of road accidents and casualties
  • Estimating total casualties from survey information

Older methodology papers are also available. The following papers relate to aspects of the statistics which are no longer routinely updated, but are retained for reference purposes

  • Testing for statistical significance in road casualty numbers
  • Adjusting road casualty estimates to account for weather patterns
  • Linking police and hospital data on road accidents

Contact for further information

Road safety statistics

Updates to this page

Published 28 November 2024

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