" . . . laws targeting the purchase and possession of alcohol by youth, including use-and-lose laws that allow the suspension of a driver's license for any underage alcohol violation and zero-tolerance laws that make it illegal for young people to drive with any amount of alcohol in their system."
Later in the article it states:
"The culture and drinking habits in which a young person was reared also affected the incidence of drinking and driving fatalities, the researchers said."
"We found a direct relationship between beer consumption per capita between drinking and driving accidents," Fell said. "We'd like to have underage beer drinking per capita, but that information isn't available."