The Pot Breathalyzer Is Here. Maybe

California Highway Patrol Sgt. Jaimi Kenyon blows into a alcohol breathalyzer during a demonstration of devices used to test drivers suspected of impaired driving May 2017, in Sacramento, Calif. Lawmakers and police are hoping new devices will be developed to effectively test for marijuana use by drivers.

Rich Pedroncelli/AP

hide caption

... read more at: