Epidemiology of drug driving: protocol from a national Canadian study measuring levels of cannabis alcohol and other substances in injured drivers

摘要

Map of the 15 sites participating in the national drug driving study across Canada*. The study is currently enrolling from 12 of these sites and has approvals in place at the other three. Additional sites may be added pending additional funding and appropriate approvals. *This figure was generated using open access boundary files available from Statistics Canada (Boundary Files, 2016 Census. Statistics Canada Catalogue no. 92–160-X; https://www150.statcan.gc.ca1/en/catalogue/92-160-X)