KIRO TV in Seattle did a small test of impairment on a closed course with participants using varying amounts of marijuana a few years ago around the time Washin

KIRO TV in Seattle did a small test of impairment on a closed course with participants using varying amounts of marijuana a few years ago around the time Washington voters were choosing to legalize pot and found similar results: http://www.kiro7.com/news/stoned-drivers-hit-test-course/139144424 http://www.kiro7.com/news/stoned-drivers-hit-test-course/139...