Exclusive: Traffic fatalities linked to marijuana are up sharply in Colorado. Is legalization to blame?

Friday, August 25, 2017

The number of drivers involved in fatal crashes in Colorado who tested positive for marijuana has risen sharply each year since 2013, more than doubling in that time, federal and state data show. A Denver Post analysis of the data and coroner reports provides the most comprehensive look yet into whether roads in the state have become more dangerous since the drug’s legalization.