United States Department of Transportation
i
Effects of Legalization of Marijuana on Traffic: Transportation Research Synthesis
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2024-05-01
[PDF-1.17 MB]
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Edition:Transportation Research Synthesis
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Abstract:The legalization of recreational marijuana use in Minnesota in August 2023 prompted interest in the law’s potential impacts on traffic safety. MnDOT’s Office of Traffic Engineering requested this Transportation Research Synthesis (TRS) to learn from the experiences of other states with longer-standing laws legalizing the recreational use of marijuana, as well as those states like Minnesota, which very recently passed such legislation. This TRS is expected to inform future actions by MnDOT and local agency staff, and provide a useful perspective for Minnesota’s policymakers and legislators as the state law is implemented. This TRS report presents findings from a sampling of relevant literature across several disciplines, including traffic safety, public safety, law enforcement and legal issues. The context gained from a review of these resources is supplemented by findings from surveys of selected state transportation and public safety agencies with experience implementing longer-standing laws related to recreational use of marijuana or preparing to implement new legislation.
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