With pot legal, police worry about road safety

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FILE - In this Oct. 10, 2012 file photo, marijuana is weighed and packaged for sale at the Northwest Patient Resource Center medical marijuana dispensary in Seattle. Pot, at least certain amounts of it, will soon be legal under state law in Washington and Colorado. Now, officials in both states are trying to figure out how to keep doped drivers off the road. (AP Photo/Ted S. Warren, File) Photo by
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