Roof strength and injury risk in rollover crashes of passenger cars

Traffic Injury Prevention
Matthew L Brumbelow, Eric R Teoh

Abstract

A 2009 study by the Insurance Institute for Highway Safety found that midsize SUVs with stronger roofs, as measured in quasi-static tests, had lower risk of ejection and lower risk of injury for nonejected drivers. The objective of the present study was to determine whether a similar association exists for other vehicle groups. Twelve small passenger cars were evaluated according to Federal Motor Vehicle Safety Standard 216 test conditions. Crash databases in 14 states provided more than 20,000 single-vehicle rollover crashes involving these vehicles. Logistic regression analyses were used to evaluate the effect of roof strength on the rate of driver injury while assessing and controlling for the effects of driver age, vehicle stability, state, and other factors where necessary. Small cars with stronger roofs had lower overall rates of serious injury, lower rates of ejection, and lower rates of injury for nonejected drivers. Although the effect on ejection was somewhat smaller for cars than for SUVs, the overall pattern of injury results was consistent. For roof strength-to-weight ratio measured within 5 in. (SWR(5)), a one-unit increase (e.g., from 2.0 to 3.0) was associated with a 22 percent reduction in risk of incapacitatin...Continue Reading

References

Sep 8, 2004·Accident; Analysis and Prevention·Melissa A Schiff, Peter Cummings
Sep 22, 2007·Journal of Safety Research·Leah V FarrellE Scott Geller
May 20, 2009·Traffic Injury Prevention·Matthew L BrumbelowAnne T McCartt
Sep 19, 2009·Traffic·Magdalena A KrzyzaniakWilliam J Britt

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Citations

Feb 11, 2015·Traffic Injury Prevention·Charles M Farmer, Adrian K Lund
Oct 7, 2011·Traffic Injury Prevention·Eric R Teoh, Adrian K Lund
Mar 13, 2021·Traffic Injury Prevention·Eric R Teoh

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