A total of 1,314 American children aged 14 and under died in US road crashes in 2009, according to new research by the National Highway Traffic Safety Administration (NHTSA). The NHTSA said 179,000 injuries had also been caused to the same child age group following 2009 crashes. The agency says safety seats in passenger cars had been found to reduce the risk of crash deaths for children of four-years-old and below by 54%, and infants by 71%.