Nearly half of drivers killed in crashes had THC in their blood

• In a review of 246 deceased drivers, 41.9% tested positive for active THC in their blood, with an average level of 30.7 ng/mL — far exceeding most state impairment limits.
• The high rate of THC positivity remained consistent over six years and was unaffected by the state’s legalization of recreational cannabis during the study period.
• Messaging around the dangers of smoking cannabis and driving needs to be stronger, authors argue.

New study findings show that over 40% of drivers who…