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May 14 2013

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Report Recommends Changes to Best Protect Children in Car Crashes

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Motor vehicle crashes remain the leading cause of death for children older than 4 years and resulted in 952 fatalities in 2010 for children age 15 and younger. Children and adolescents are the most common occupants in the rear seat of passenger vehicles, and a new research report from The Children’s Hospital of Philadelphia Research Institute provides specific recommendations for optimizing the rear seat to better protect them.

By bringing technologies already protecting front seat passengers to the rear seat and modifying the geometry of the rear seat to better fit this age group, the U.S. could achieve important reductions in serious injury and death, according to the report.

Kristy Arbogast, PhD, director of engineering at the Center for Injury Research and Prevention at CHOP, led the report, which reviewed the current science and data regarding rear seat occupant safety. The investigators found clear evidence that use of a child restraint system (CRS) is protective for younger children.

“However, older children who have outgrown child safety seats and booster seats are at greater risk of injury,” said Dr. Arbogast. “Many technologies that protect front seat passengers, such as load limiters and pretensioners, are not commonly found in the rear seat even though sled tests and computer modeling suggest that these seat belt features have the potential to reduce the risk of serious head and chest injury for rear seated occupants.”

In addition to front seat restraints, the researchers suggest that cues can be taken from booster seat design to determine how to keep kids who have outgrown boosters properly positioned in vehicle seat belts so the restraint can perform properly. They propose that adjustments to the geometry of the rear seat — including shorter seat cushions, lower seat belt anchorages and contoured seats — could increase comfort, keep the shoulder belt in position and, in side impact crashes, reduce lateral movement.

“For children under age 13, the rear seat is still the safer seating position as compared to the front seat of passenger vehicles,” said Dr. Arbogast. “But we can do a better job at protecting children who have outgrown add-on restraints.”

The report authors recommend the development of regulatory procedures or vehicle performance assessment programs for consumers that evaluate protection of rear seat occupants. Common vehicle rating systems do not evaluate the safety of rear seat occupants in frontal crashes. In addition to engineering solutions, the report also recommends policies and programs to increase rear seat restraint use, which remains lower than front seat restraint use and is a key risk factor for dying in a crash. Additional research is needed to further inform these priorities.

The full report (in PDF form) is available here, and made possible with support from Global Automakers. Additional materials, including a one-page overview of CIRP’s recommendations, are available at http://injury.research.chop.edu.

Permanent link to this article: http://www.research.chop.edu/blog/report-recommends-changes-to-best-protect-children-in-car-crashes/

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