States with medical marijuana laws have fewer traffic fatalities

12/31/16–States that passed medical marijuana laws have seen an 11% reduction in traffic fatalities on average, according to a new study published in the American Journal of Public Health. The most likely takeaway from this study is that medical marijuana laws are helping to decrease alcohol-related traffic fatalities among the age groups at highest risk, but other parts of this study don’t neatly line up behind any single conclusion. Read