While drunk driving remains the primary risk on the roads during the holiday season, a new PSA campaign focuses on cannabis-impaired drivers -- and the prevalence of nonchalant attitudes about driving ...

The campaign behind Florida’s amendment to legalize recreational marijuana sent dozens of cease and desist letters to television stations across the state Tuesday, arguing that a Florida Department of ...

Scientists want to create breathalyzers that show how recently a driver used marijuana. Researchers also are studying how cannabis impairs motor skills and reflexes for habitual and occasional users.