The second data set compared survival rates of back-seat occupants only in crashes in which there was at least one fatality. The middle-seat group contained 5,707 occupants, while the "outboard" or window-seat group had 27,611 occupants, for a total of 33,318 back-seat passengers.
The fatality rate for the rear middle-seat occupant then was compared to that of the window-seat positions. The analysis produced some revealing statistics, aside from the issue of the safest place to be sitting during a crash. The average age of the 33,318 rear seat passengers was 20 years, while middle back-seat passengers were only 15.4 years on average.
Nearly half of the passengers in the back seat -- 46.9 percent -- were not wearing seat belts, results showed, and of these unrestrained passengers, 34.6 percent were fatally injured, compared to only 14.9 percent of seat-belt wearers.
In general, back-seat passengers who wore seat belts were 2.4 to 3.2 times more likely to survive a crash than their unbelted back-seat companions.
One reason the rear middle seat is the safest, Jehle noted, is because passengers sitting in this position have a much larger "crush zone" than rear side-seat passengers in near-side impact crashes. The crush zone is an area of the car designed to collapse in an effort to absorb some of the impact from a collision.
"In addition, in rollover crashes there is potentially less rotational force exerted on the middle seat passenger than on those in the window seats," he said. "This study reinforces the importance of using seat belts in the back seat, as well as demonstrating that the rear middle seat is the safest," stated Jehle. "Legislation to require rear-seat belt use by all passengers should be strongly supported."
'"/>
Contact: Lois Baker
ljbaker@buffalo.edu
716-645-5000 x1417
University at Buffalo
27-Jun-2006