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. 2020 Aug 1;180(8):1119-1120.
doi: 10.1001/jamainternmed.2020.1769.

Change in Traffic Fatality Rates in the First 4 States to Legalize Recreational Marijuana

Russell S Kamer  1 , Stephen Warshafsky  1 , Gordon C Kamer  2
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Change in Traffic Fatality Rates in the First 4 States to Legalize Recreational Marijuana

Russell S Kamer et al. JAMA Intern Med. .

Abstract

This cross-sectional study examines the association of commercial sales and legalization of recreational marijuana with traffic fatalities.

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Conflict of interest statement

Conflict of Interest Disclosures: None reported.

Figures

Figure.
Figure.. Change in Traffic Fatality Rate From 2008
BVMT indicates billion vehicle miles traveled. Rates are indexed to 2008. Data points represent the change in the annual traffic fatality rate since 2008 for each experimental state and the 20-state control group mean. Colorado and Washington voted to legalize recreational marijuana in November 2012. Retail stores opened in January and July of 2014, respectively. Oregon and Alaska voted to legalize in November 2014. Retail stores opened in October 2015 and October 2016, respectively.
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