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- Title
EARLY EVIDENCE ON RECREATIONAL MARIJUANA LEGALIZATION AND TRAFFIC FATALITIES.
- Authors
Hansen, Benjamin; Miller, Keaton; Weber, Caroline
- Abstract
Over the last few years, marijuana has become legally available for recreational use to roughly a quarter of Americans. Policy makers have long expressed concerns about the substantial external costs of alcohol, and similar costs could come with the liberalization of marijuana policy. Indeed, the fraction of fatal accidents in which at least one driver tested positive for tetrahydrocannabinol has increased nationwide by an average of 10% from 2013 to 2016. For Colorado and Washington, both of which legalized marijuana in 2014, these increases were 92% and 28%, respectively. However, identifying a causal effect is difficult due to the presence of significant confounding factors. We test for a causal effect of marijuana legalization on traffic fatalities in Colorado and Washington with a synthetic control approach using records on fatal traffic accidents from 2000 to 2016. We find the synthetic control groups saw similar changes in marijuana‐related, alcohol‐related, and overall traffic fatality rates despite not legalizing recreational marijuana.
- Subjects
MARIJUANA legalization; DRUG traffic; DRUG laws; FINANCIAL liberalization; TETRAHYDROCANNABINOL
- Publication
Economic Inquiry, 2020, Vol 58, Issue 2, p547
- ISSN
0095-2583
- Publication type
Article
- DOI
10.1111/ecin.12751