Carol Stream police develop marijuana saliva test for field sobriety



The Carol Stream Police Department is at the forefront of a saliva testing program to measure marijuana impairment in drivers. The simple test produces almost immediate results, but police say the technology is far from perfect. Marijuana is a complex drug and a single roadside test may never be reliable on its own to measure a driver’s impairment. FULL STORY: https://abc7.ws/2LpanMU

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