Laws allowing medical marijuana have little impact on road safety

State laws that allow the use of medical marijuana are not significantly associated with cannabis-involved driving, according to a new study by Georgia State University associate professor of criminal justice and criminology Eric Sevigny.

Neither are those laws that allow for specific supply provisions, including home cultivation and unlicensed or quasi-legal dispensaries, Sevigny said.

The study, published in Accident Analysis and Prevention in June, uses data from the Fatality Analysis Reporting System and examines vehicular accidents that led to a death between 1993 and 2014.

Sevigny found that in only those jurisdictions with state-licensed medical marijuana dispensaries did the odds of marijuana-involved driving increase by a significant 14 percent. In those states, an additional 87-113 drivers per year tested positive for the drug during the study period.

“It could be that when a dispensary is the point-of-sale, people are more likely to consume the product before getting behind the…

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