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

1 MB
This file may not be accessible. Request a different format. If you need a more accessible version of this document please email Please tell us the format you need. If you use assistive technology please tell us what this is.


Ryan Pike

Tel: 0300 025 6415


Tel: 0300 025 8099