According to the Washington Traffic Safety Commission, an exponential increase in the number of deaths involving marijuana-impaired drivers occurred between 2013 and 2014, reports KOIN. Marijuana was legalized in the state of Washington in 2014; between 2010 and 2013 the number of marijuana-impaired drivers involved in fatal crashes ranged from 32 to 38 per year. But in 2014, after pot became legal, that number skyrocketed to 75. In half of the 2014 cases, the drug-addled drivers tested above the state’s legal limit for being under the influence of the drug while driving. Many of the heavily-drugged drivers also tested positive...