A study from "the AAA Foundation for Traffic Safety is a 501(c)(3) not-for-profit, publicly supported charitable research and educational organization. Dedicated to saving lives and reducing injuries on our roads, the Foundation’s mission is to prevent crashes and save lives through research and education about traffic safety."
Here's the article: http://newsroom.aaa.com/2016/05/fata...egalizes-drug/
I hope the extra tax revenue is worth it.Fatal crashes involving drivers who recently used marijuana doubled in Washington after the state legalized the drug