Cannabis and Impaired Driving

摘要

Impaired driving is a major cause of preventable death worldwide. Alcohol-impaired driving accounted for a mean of 19 (range, 3-34) of the motor vehicle crash deaths in 20 countries in 2016 1 ; in 2018, 29 of the 36 560 crash deaths in the US were attributed to impaired driving. 2 By comparison, driving under the influence of cannabis was estimated to account for 8700 road traffic deaths worldwide in 2013. 3 Alcohol and cannabis are often consumed together, and their combined use is associated with greater crash risk than the use of either substance alone. 3 Notably, cannabinoids are the most commonly detected other drugs (besides alcohol) in fatally injured drivers (up to 15 in urban areas), and the prevalence is increasing.