CDC: Teen drinking and driving falls by half

The number of teens who are drinking and driving has shrunk by more than half since 1991, the Centers for Disease Control report.

Drinking and driving among teens in high school has fallen 54% in the past 21 years, the CDC finds. But it's still a problem. One in 10 teens say they have consumed alcohol and driven, amounting to 2.4 million times a month.

Worse, 85% of teens in high school who report drinking and driving in the past month also say they consumed five or more alcoholic drinks within a couple of hours. That's so-called binge drinking.

About 20% of teen drivers in fatal crashes had alcohol in their systems. Out of those 81% had enough alcohol in their blood to be considered legally drunk, the CDC adds. And, of course, no one can legally drink any alcohol, then get behind the wheel, before they are age 18.