Colorado marijuana law expert trains Nevada's rural cops to catch stoned drivers

CARSON CITY -- Former Colorado prosecutor Chris Halsor stands before a room filled with prosecutors and cops and asks them a simple question: How many of you can visually identify an ounce of marijuana?

After a momentary pause, a few confident responses and a few slowly raised hands, a young Nevada Highway Patrol officer mutters with a chuckle, "I'd know more than an ounce of marijuana."

"I’ll tell you in my experience, with my officers, they pull someone over in Colorado and they see a gallon sized bag of marijuana buds and they're like, 'That's more than an ounce!,'" says Halsor, Nevada's temporary traffic safety resource prosecutor.

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