As cannabis bans are relaxed in more U.S. states, the race is on to develop an instant roadside breathalyzer for police to test drivers who may be taking the "high" road.
Vancouver-based Cannabix Technologies Inc, founded by a retired Royal Canadian Mounted Police officer, expects to be first out of the gate with a "pot breathalyzer" — a handheld device similar to those used to detect alcohol.
Cannabix won't give an estimate of when its product might go on sale, but has a prototype undergoing in-house testing.