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Study: Medical Marijuana May Impair Driving

Monday, July 30th, 2012

car speeding down streetA new study finds that medicinal marijuana may impair driving, but the usual roadside driving sobriety tests won’t detect it. Researchers in the Netherlands studied both frequent and occasional marijuana users, giving them either dronabinal pills (medical marijuana) or placebo pills. In driving tests, participants under the influence weaved from side to side and had a slower reaction time. Occasional marijuana users showed impairment similar to that of a person with a blood alcohol content of 0.08, the legal limit.  Researchers also administered typical roadside sobriety tests—requiring patients to walk, turn and balance on one leg—but those tests did not detect impairment. Dr. Guohua Li, a professor at Columbia University in New York, told Reuters that we know very little about marijuana’s effect on drivers. As the study demonstrates, said Li, “There’s no easy way right now to tell if someone is under the influence of marijuana.”

Source: Reuters Medical Marijuana May Hurt Driving Skill Level

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