How Safe Is Driving While High?
A number of states and the District of Columbia have taken steps toward legalizing marijuana in some form. While legalization may not actually increase marijuana use, it does raise questions about driving under the influence of the drug -- especially since there's currently no way to test from the road how high someone actually is.
Sound Medicine host Barbara Lewis talks with Dr. Mark Asbridge, who specializes in addiction and injury prevention at Dalhousie University in Nova Scotia.
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