Despite being regulated in many jurisdictions, cannabis (marijuana) is the most widely used illicit substance in the world.
The Objective of the study was to determine whether the acute consumption of cannabis (cannabinoids) by drivers increases the risk of a motor vehicle
collision.
What is already known on this topic is that little consensus exists in the scientific literature on how driving under the influence of cannabis affects the risk of a motor vehicle collision in naturalistic settings
What this study adds is that acute cannabis consumption nearly doubles the risk of a collision resulting in serious injury or death; this increase was most evident for studies of high quality, case-control studies, and studies of fatal collisions
These data could help inform policy and interventions tackling road safety and raise public awareness of the collision risks when driving under the influence of cannabis.
Source
http://www.bmj.com/content/344/bmj.e536
(MDN)
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