Colorado troopers get training on spotting drivers under influence of pot

Colorado State Patrol troopers cited 60 people in January for driving offenses in which marijuana was believed to be involved, a CSP sergeant said Monday in reporting the first such numbers in the state.

Trends in stoned driving have proved difficult for state officials to track, and the State Patrol began keeping tallies on impaired-driving cases involving marijuana only in January. In that month, stoned-driving citations made up about 15 percent of the total impaired-driving citations for the month, Sgt. Mike Baker said.