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Letters Driving while under the influence of cannabis

Cannabis and the DVLA

BMJ 2012; 344 doi: (Published 21 March 2012) Cite this as: BMJ 2012;344:e2134
  1. David Dunleavy, foundation year 2 doctor
  1. 1Doncaster and Bassetlaw Hospitals NHS Foundation Trust, Doncaster Royal Infirmary, Doncaster, UK
  1. ugm4djd{at}

Asbridge and colleagues proved that acute consumption of cannabis is an independent risk factor for a motor vehicle collision and seems to affect the severity of a crash.1 Most important to practitioners, however, are the Driver and Vehicle Licensing Authority (DVLA) guidelines on cannabis use.

The DVLA is also worried about ongoing use of the …

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