“Vital Signs”
The U.S. Centers for Disease Control and Prevention, in Atlanta, said last month that among high school students 16 and older, drinking and driving dropped 54 percent from 1991 to 2011, from 22.3 percent of students reporting they drank and drove in 1991 to 10.3 percent in 2011.
The CDC said graduated-driving-license systems that restrict teenagers from full driving privileges for several years may have contributed to the decrease, as may have rising gas prices and the economic downturn, which could have cut the miles teenagers are driving, especially in the past few years.