A Bay Area company says it has successfully measured marijuana impairment in drivers. The test could provide law enforcement with a much-needed tool to identify people driving while stoned.
Marijuana has become just as strong if not stronger of a problem driving as alcohol,” said San Francisco Police Sargent John Bragagnolo.
San Francisco police estimate one in four drivers they stop for driving under the influence are stoned. Identifying them takes a field sobriety test.