What is so disconcerting about these statistics is that the same study found teens are aware of the dangers of texting while driving, but the need to stay connected to friends usually takes a backseat to safety. The Dangers The results of these unsafe habits can be devastating. According to AAA, motor vehicle crashes are the number one killer of drivers ages 15 to 20, and claim more than 6,000 lives a year. Experts blame inexperience behind the wheel coupled with poor decision making, such as speeding, distracting passengers, and texting, for these alarmingly high numbers.