Researchers are working on a breathalyzer to keep pot smokers off the road

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Researchers at Washington State University are working on a handheld breathalyzer that could detect if a driver tests positive for marijuana use.

Although it's legal for people to smoke marijuana recreationally and for medical reasons in four states (Washington, Alaska, Colorado and Oregon), users are not allowed to get behind the wheel if they have more than five nanograms of THC (an active ingredient found in cannabis) per milliliter of blood.

A similar tool to breathalyzers that are used to prevent drunk driving could work for cannabis users. As of now, determining sobriety after smoking typically involves a blood test, the results of which can take up to a day to come in Read more...

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