Drug use impaired driving and traffic accidents Methodological issues in determining the relationship between drug consumption impaired driving and traffic accidents Prevalence of drugs in drivers Effects and risks associated with drugs Overall conclusion This literature review provides a comprehensive report on the relationship between drug use impaired driving and traffic accidents. It covers methodological issues presents results of prevalence surveys among drivers and provides an overview of findings from major international epidemiological surveys published since 1999. The report also gathers evidence from experimental and field studies of the relationship between drug use driving impairment and traffic accidents. Publishers description