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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 2016.

Main points

  • In 2015, 6% of all drivers of motorised vehicles and 8% of motorcyclist drivers/riders killed in traffic collisions were above the drink drive limit.
  • The Department of Transport report that 8% of killed or serious injury accidents (KSI) that occurred in Wales in 2015 involved drivers over the blood alcohol limit.
  • In terms of road accidents, police officers’ views about the contributory factors that led to accidents suggested that 9% of KSI accidents during 2016 involved drivers that were impaired by alcohol.
  • In 2016, 66 accidents where the reporting police officer identified pedestrian(s) being impaired by alcohol as a contributory factor to that accident.
  • In 2016, there were approximately 3.5 accidents where the driver was impaired by alcohol, for every 1 accident where a driver was impaired by drugs.

Breath tests of drivers taken after accidents show:

  • considerable variation between the months of the year and the same months in different years with a 10.3% reduction in positive tests observed when compared to the 2015(r) data
  • drivers were more likely to test positive at the weekend than on a weekday (4.6 vs 2.8(r))
  • 64.5% of positive tests, for drivers, occurred between 18:00 to 03:59.

(r) Revised on 15 December 2017.


Drinking and driving, 2016 , file type: PDF, file size: 2 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.