Saab Active Head Restraints

SAHR is mounted at the top of a frame, inside the seat-back, which is designed to pivot at its mid point.

In a rear-end impact, the occupant’s lower back is forced rearwards by inertia against the bottom portion of the seat-back.

SAHR 2 was designed for even faster activation in rear impacts at lower speeds.

The head restraint is activated as soon as the lower back is pressed into the setback by the occupant’s inertia during a rear impact.

[3] In 2002 a study conducted by the Insurance Institute for Highway Safety that investigated property damage insurance claims found that Saab's active head restraint design produced a 55 percent reduction in claim rates for women and a 31 percent reduction for men.