TRS: Effects of Legalization of Marijuana on Traffic Safety Status: CompleteReport Date: 06/03/2024 Summary: The recent legalization of recreational marijuana use in Minnesota prompted MnDOT’s Office of Traffic Engineering to request this Transportation Research Synthesis (TRS) to gather information about the impacts to traffic safety of such legislation in other states. Using a survey of the states and district where recreational use of marijuana has been legal for some time or only recently legalized, this TRS examines any changes in traffic safety; the effects law enforcement agencies have identified after legalization; and the guidelines, procedures and experts law enforcement use to determine impairment of recreational marijuana users. Findings from this TRS are expected to inform future actions by MnDOT and local agency staff, as well as the state and local policymakers and legislators seeking to assess the traffic safety impacts associated with legalizing recreational marijuana use. Final Deliverables: Effects of Legalization of Marijuana on Traffic (Synthesis #TRS2404) Related Materials: Cannabis and traffic safety: Past and upcoming U of M research (News/Publication Article) Related Research:
