The American Trucking Association released a statement in October 2021, citing retiring driving veterans and lower wages as the partial cause for the shortage of more than 80,000 drivers. However, another cause for this shortage is being attributed to adult-use legalization and drivers testing positive for cannabis. A March 2022 U.S. Department of Transportation summary report states that as of April 1, 2022, 10,276 commercial truck drivers tested positive for THC. (Although this is a significant decrease in numbers, compared to 31,085 violations in 2021 and 29,511 violations in 2020.) Cannabis leads the data as the highest positive drug tests...