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The safety implications of vehicle seat adjustments
Authors:Hill John D  Boyle Linda Ng
Institution:Department of Mechanical and Industrial Engineering, and Public Policy Center, The University of Iowa, 3131 Seamans Center, Iowa City, 52242, USA.
Abstract:INTRODUCTION: The goal of this study was to gather information on the preferred front seat position of vehicle occupants and to determine the impact of variation in seat position on safety during crashes. METHOD: The study evaluated the relationship between seat position and occupant size using the chi-square test and compared the risk of severe injury for small females and large males with regard to forward and rearward seat position using logistic regression. RESULTS: While smaller drivers sat closer to the steering wheel than larger drivers, front passengers of all sizes used similar seat positions. Additionally, the risk of injury was higher for small, unbelted females in rearward seat positions and large males (belted and unbelted) in forward seat positions. CONCLUSIONS: Occupants who adjust their seats to positions that are not consistent with required federal tests are at a greater risk for severe injury in a crash.
Keywords:Driver and occupant  Seat positions  Injury severity  Injury type  Risks  Gender differences
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