TESTS OF SEATS & HEAD RESTRAINTS IN CARS

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ARLINGTON, VA -- Using a new dynamic test and a dummy designed especially for rear impact testing, the Insurance Institute for Highway Safety has rated 73 seat/head restraint combinations available in 63 car models sold in the U.S. market. The ratings of good, acceptable, marginal, or poor indicate the range of occupant protection from whiplash injury in rear-end crashes at low to moderate speeds.


http://www.hwysafety.org/news_releases/2004/pr111404_1.pdf

Saabs and Volvos are winners: The seat/head restraint combinations in two Saab models and three Volvos are rated good, but the designs of these systems aren't the same. As an occupant's torso sinks into a Saab seat during a rear crash, a mechanism in the seatback is designed to push the head restraint up and toward the back of the head. Volvo took a different approach, designing seatbacks with a special hinge to reduce the forward acceleration of an occupant's torso.

"The designs are different, but the result is the same," Lund points out. "Both Volvo and Saab have found a way to reduce the differential motion of an occupant's head and torso that causes neck injury in rear crashes. This is what we want every automaker to do."

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