Better Measures Are Needed to Detect Cannabis Impairment While Driving, Experts Say
A study coming out of Canada proves what we all know—that more improvements are needed before we can truly understand cannabis impairment while driving, and before we can truly determine who is impaired.
The study came from the Canadian Medical Association Journal and was conducted by a research team associated with Lady Davis Institute of the Jewish General Hospital in Montreal. Sarah Windle, who was a lead author on the study, is now a Ph.D. at McGill University.
“We would love to have that one measure that says, okay, this person is impaired, or they aren’t, said Windle. “But unfortunately, in the case of cannabis, it just isn’t that simple.”
“We were really interested in trying to look and see if there was an association between legalization and increases in fatal motor vehicle collision. The data [wasn’t] there yet for Canada. So, we looked to the United States.”
Through their research, the team dug into the US as well and discovered that legal areas in the states may be associated with significant increases in motor vehicle collisions and deaths. Put in the context of Canada, a country that has entirely legalized cannabis, they estimated that 308 additional fatalities from driving could occur due to