Many parents use their cell phones while driving with kids in the backseat.
Researchers at Children's Hospital of Philadelphia did an online survey of 760 parents, finding about half use cell phones while driving with children.
One in seven admitted to using social media while driving, and a third said they read text messages with their kids in the car.
Study authors say there are two big reasons why this is dangerous.
According to Catherine McDonald of Children's Hospital of Philadelphia:"If parents are using a cell phone while they're driving and their kids are in the car with them, they're putting themselves at risk for a crash, and potentially risk for injury for that child. In addition, they're also modeling unsafe driving behaviors for those children who are in the backseat watching them."
Experts say pediatricians can help by bringing up safe driving behaviors during well visits with kids and parents.