'Drivers suspected of being high on pot may soon face the same type of roadside breath test cops use to catch drunken drivers, as several firms prepare new devices for the street.
Hound Labsof Oakland expects to have a marijuana breathalyzer ready by the second half of 2020, according to Mike Lynn, a medical doctor and co-founder of Hound Labs. Another firm, SannTek of Canada, also is racing to have a product ready in that timeline.
Both developers also see uses for the devices on job sites to ensure workplace safety.
Convicting drivers who officers believe just finished smoking weed before getting behind the wheel has been problematic for prosecutors and police since marijuana became popular in the 1960s. At the same time, establishing just when a driver smoked the weed has made it difficult for a defense attorney to argue that his client should not be charged, because he smoked the day before.' - via Sacbee