MedicalXpress.com - Prescription drugs play an increased role in traffic deaths

As states across the country explore the relaxation of marijuana laws, the changes have sparked widespread debate about the actions' impact on public safety. According to a West Virginia University School of Public Health study recently published by the journal Accident Analysis & Prevention, automobile fatalities linked to drug use have risen sharply over the last decade. However, the role of illegal drugs in these crashes has declined.

http://medicalxpress.com/news/2014-05-prescription-drugs-role-traffic-deaths.html