Marijuana Use Increases Risk of Traffic Crashes and Deaths

A meta-analysis was conducted using nine epidemiological studies of motor vehicle collisions that measured recent cannabis use and also included control groups. Experimental and simulation studies were excluded.

The results indicated that driving under the influence of cannabis was associated with a 92% increased risk of vehicular crashes. Important is the fact that such driving was associated with a 110% increase in fatal crashes.

It appears that the public is generally unaware of the significant risk of marijuana use to traffic accidents and deaths.

We have made great strides in reducing alcohol-related traffic crashes and fatalities. We must continue doing so. But we must also be direct our preventive efforts to additional major causes of vehicular deaths, including marijuana use and cell phone use.  January 2014

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