More than 40% of drivers in fatal crashes had THC in their blood – well above legal limits

Key findings Of 246 drivers who died in crashes, 41.9% had active THC in their blood, with average levels of 30.7 ng/mL, well above the legal limits set in most states. The percentage of drivers testing positive for THC remained high and stable over a six-year period, showing no change even after recreational cannabis use. […]