Studies that factor-in alcohol and demographics found NO INCREASED RISK related to driving after cannabis use

2. Risks related to driving after cannabis use

This review considered two primary risks associated with driving after cannabis use: risk of motor vehicle accidents (MVA) and risks of legal penalties.

Summary and Conclusions

• The increased risk for cannabis-related motor vehicle collision currently found in the population is roughly 20-30%, with an MVA odds ratio (OR) of approximately 1.22.

• Studies that controlled for alcohol use, found the MVA OR for DACU (Driving After Cannabis Use) is 1.18; those controlling for demographic factors and alcohol found no increased risk (OR=1).



Canadian Drug Policy Coalition (CDPC) Simon Fraser University DATE: March 27, 2017

PREPARED BY: Rielle Capler, MHA Ph.D. Candidate, University of British Columbia Dan Bilsker, Ph.D. Clinical Assistant Professor, Faculty of Medicine, University of British Columbia Kelsey Van Pelt, BSc MPH Candidate, Simon Fraser University Donald MacPherson Executive Director, Canadian Drug Policy Coalition (CDPC) Adjunct Professor, Faculty of Health Sciences, Simon Fraser University