“High holidays” are linked to increased risk of fatal traffic crashes

The popular American annual counterculture holiday “4/20,” which is celebrated by mass consumption of cannabis at 4 20 pm on 20 April, is associated with an increased risk of fatal traffic crashes, a study has found.1

To examine the link between cannabis use and fatal vehicle crashes, Canadian researchers looked at data from the United States National Highway Traffic Safety Administration’s fatality analysis reporting system, …