This study describes nonfatal interactions between children and front passenger air bags. Twelve surviving children aged 12 and younger who experienced passenger air bag deployments were identified from hospital emergency department records and police accident reports. Data from crash reconstructions and medical records were analyzed to determine mechanisms responsible for each injury sustained. Four of six children in safety seats and one of six children restrained in lap/shoulder belts sustained significant brain injuries. It is recommended that infant seats and forward facing safety seats be placed in the rear seats of vehicles equipped with passenger air bags.