Study reveals teens' worst driving habits as deadly crashes spike

The number of teenagers involved in deadly car crashes is rising for the first time in nearly a decade. New data from federal regulators reveal a 10-percent increase last year in teen driving deaths. Teens are more than one-and-a-half times more likely than adults to be involved in a deadly crash.Eight in 10 adults between ages 35 to 55 admit to driving while talking on the phone – more than teens. About half of teens and adults drive 15 mph over the speed limit. But when you add inexperie