February 14, 2015 Consuming Alcohol Poses a Much Larger Risk for Driving Accidents Than Cannabis Drivers who test positive for the presence of THC in blood are no more likely to be involved in motor vehicle crashes than are drug-free drivers.
Activism September 2, 2014 Marijuana Effect On Drivers And Deaths Still Hazy, Researchers Say Officials worry that marijuana consumption, like alcohol, will increase traffic incidents, but studies still lack answers
Activism April 4, 2014 Marijuana Legalization Could Bring Unexpected Benefits in Traffic Safety The anti-pot group Project SAM claims drug test data show that marijuana legalization in Washington, approved by voters in that state at the end of 2012, already has made the roads more dangerous.
Medical November 30, 2011 Do Medical Marijuana Laws Reduce Traffic Fatalities Research finds marijuana impaired drivers take less risks and do not get into accidents