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California Company Develops Breathalyzer For Marijuana Use05:43
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Legal sales of recreational marijuana have begun in California. But there's no standard for how much marijuana you can have in your system and still get behind the wheel. So is it possible to test if someone is too high to drive?

Eli Wirtschafter (@RadioEli) from KALW reports an emerging industry is trying to answer that question.

This segment aired on January 17, 2018.

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