A recent study conducted at state Universities of Tennessee, Arkansas and Iowa showed that U.S. recreational cannabis legalization reduced the number of heavy truck accidents by 11% in the eight states studied.
The researchers looked at a state-level panel of heavy truck accident statistics from 2005 to 2019 and a difference-indifference estimation strategy. "To test these hypotheses, we take a difference-in-difference (DID) approach, an empirical strategy that is well-established within empirical logistics research," the study read.
