Car accidents are the No. 1 killer of children, according to the National Highway Traffic Safety Administration.
And with school back in session, lots of kids are on the road.
In 34 states and Washington, D.C., children are required to ride in booster seats up until they reach about age 4 and 40 pounds.
Booster seats can save lives. But one family said they're not good enough and there's a better alternative.
One Family's Story
Kevin and Christine Miller's 3-year-old son Kyle was killed...Full Story