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The Conversation USA

With legal pot comes a problem: How do we weed out impaired drivers?

  • Written by Igor Grant, Professor and Chair of Department of Psychiatry and Director, Center for Medical Cannabis Research, University of California, San Diego
imageA Miami police officer looks at a driver's license he requested from a motorist at a DUI checkpoint. AP Photo/Lynne Sladky

On Nov. 8 voters in California, Maine, Massachusetts and Nevada approved ballot measures to legalize recreational cannabis. It is now legal in a total of eight states. And this creates potential problems for road safety. How do...

Read more: With legal pot comes a problem: How do we weed out impaired drivers?

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