Auto insurance premiums decreased in states following the legalization of medical marijuana, according to a new study that builds on existing research signaling that cannabis reform is associated with reduced risk of dangerous driving—contrary to prohibitionist arguments. The study, published this month in the journal Health Economics, analyzed insurance data from 2014 to 2019. … [Read more...] about Medical Marijuana Legalization Linked To Reduced Drunk Driving And Safer Roads, Study On Auto Insurance Data Suggests. If your premium went down, thank a stoner.