As we approach the fifth anniversary of the first two states to legalize marijuana Washington and Colorado its instructive for other states to learn from their example.

In March 2017, Washingtons Office of Financial Management produced a PowerPoint presentation entitled, Monitoring Impacts of Recreational Marijuana Legalization .

From that presentation are charts that contradict the predictions of failure from opponents of Initiative 502, the ballot question in 2012 that legalized marijuana in Washington.

In Part I , I broke down the biggest fears offered about the effect of marijuana legalization on childrens use. In Part II , I showed you how legalization has affected children who do use marijuana. In this Part III, Ill show you what effect marijuana legalization had on traffic safety. Finally, in Part IV , Ill show you how much marijuana tax revenue the state of Washington has earned.

Legalization Did Not Create Stoned Mayhem on the Freeways

Every state that has addressed the issue of marijuana legalization has faced dire predictions that it would unleash upon our roadways a legion of stoned drivers who would leave a trail of traffic deaths in their wake.