Other studies have found no significant effect in the number of crashes since the first three states legalized marijuana sales
By Daniel C. Vock | Governing
States that legalized marijuana sales have higher rates of car crashes than neighboring states that don’t allow pot sales. At least, that’s what researchers from the Highway Loss Data Institute, an insurance group, concluded, after scouring 2.5 million insurance claims that drivers filed over the past three years.
The group found that Colorado, Oregon and Washington all saw increases in damage reports compared to other states. That was true even after its researchers tried to take into account weather, types of vehicles, population density and other variables that might otherwise explain the increases.