Don't Hold Your Breath for a Marijuana “Breathalyzer” Test
As cannabis wafts back into mainstream America on growing winds of legal change, a west coast company says it has reached a technological milestone that is quickly becoming crucial to the justice system: a device police can use to detect recent marijuana use—and the amount consumed—in the air a driver exhales.
But don’t hold your breath.
Although many researchers and companies dream of fielding a roadside test for driving under the influence of cannabis, such a product may still remain years away from practical service use. Millions of dollars’ worth of speculative research will likely be needed to correlate data about consumption amounts with actual driver impairment. And the issue of stoned driving remains enormously complex, with experts still highly uncertain about marijuana’s precise effects on cognition and competence.
This fall a California-based company called Hound Labs announced it has developed a portable breathalyzer-like device called the Hound that could...
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