“Written by researchers at the University of Colorado, Oregon and Montana State University, the paper was published in 2013 in the Journal of Law & Economics.”
LOL! Wondering what they are saying now since traffic deaths up significantly in CO since legalizing marijuana?
Increasingly potent levels of marijuana were found in positive-testing drivers who died in crashes in Front Range counties, according to coroner data since 2013 compiled by The Denver Post. Nearly a dozen in 2016 had levels five times the amount allowed by law, and one was at 22 times the limit. Levels were not as elevated in earlier years.
Last year, all of the drivers who survived and tested positive for marijuana use had the drug at levels that indicated use within a few hours of being tested, according to the Colorado Department of Transportation, which compiles information for the National Highway Traffic Safety Administration’s Fatality Analysis Reporting System.
https://www.denverpost.com/2017/08/25/colorado-marijuana-traffic-fatalities/
That link has already been posted on this thread - and it’s already been pointed out that the link says:
“Colorado transportation and public safety officials, however, say the rising number of pot-related traffic fatalities cannot be definitively linked to legalized marijuana.
“Positive test results reflected in the NHTSA data do not indicate whether a driver was high at the time of the crash since traces of marijuana use from weeks earlier also can appear as a positive result.”