Driving while distracted by your phone is a nationwide problem. A new proposed phone function from Apple could play a big role in helping teens — and adults — avoid accidents. Nils Kahle/iStockphoto hide caption

itoggle caption Nils Kahle/iStockphoto

Reggie Shaw killed two men while he was texting on a Utah highway. He now speaks to groups about the dangers of texting and driving. ShareATT/YouTube hide caption

itoggle caption ShareATT/YouTube

A University of Utah volunteer drives through Salt Lake City's Avenues neighborhood as a camera tracks her eye and head movement. Another device records driver reaction time, and a cap fitted with sensors charts brain activity. AAA Foundation for Traffic Safety hide caption

itoggle caption AAA Foundation for Traffic Safety

Dylan Young, then 18, posed for a photo as a vehicle cruised by North Arlington, N.J., in June 2012. Young was in a fender-bender accident caused by being distracted while texting and driving. Julio Cortez/AP hide caption

itoggle caption Julio Cortez/AP

Despite the well-publicized dangers and laws against it in many states, texting or emailing while driving remains a huge problem. Robert F. Bukaty/AP hide caption

itoggle caption Robert F. Bukaty/AP