Fatal marijuana-related crashes up where drug is legal

http://www.cbsnews.com/news/aaa-report-fatal-marijuana-related-crashes-up-where-drug-is-legal/

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In 2012, Washington became one of the first states to legalize marijuana. Now a new study by AAA has found the number of fatal accidents involving drivers who'd recently used pot more than doubled between 2013 and 2014.

The study also found that there is currently no reliable test to determine the amount of marijuana in the blood stream that leads to driver impairment, reports CBS News' Kris Van Cleave.

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tags: drug use, drub abuse