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Information about the association between drink driving and accidents, results of breath tests of drivers involved in accidents and enforcement action relating to drink driving for 2017.

Main points

  • In 2016, 12% of all drivers of motorised vehicles and 18% of motorcyclist drivers or riders killed in traffic collisions were above the drink drive limit.
  • The Department for Transport estimates that 7% of killed or serious injury accidents (KSI) that occurred in Wales in 2016 involved drivers over the blood alcohol limit.
  • Police officers’ views about the factors which contributed to accidents occurring suggest that 7% of KSI accidents during 2017 involved drivers that were impaired by alcohol.
  • In 2017, there were 70 accidents in which contributory factors included pedestrians being impaired by alcohol.

Breath tests of drivers taken after accidents show:

  • 4.6% of drivers (134) involved in accidents were over the legal alcohol limit for driving
  • over two thirds of positive tests occurred between 6pm and 4am
  • drivers were more likely to test positive on weekends than on weekdays.


Drinking and driving, 2017 , file type: PDF, file size: 1 MB

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Ryan Pike

Telephone: 0300 025 6415

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Rydym yn croesawu galwadau yn Gymraeg / We welcome calls in Welsh.