NISSAN 2011 Altima Hybrid - Owner's Manual - Manual (Page 38)

Front-seat Active Head Restraints
The Active Head Restraint moves forward utiliz-
ing the force that the seatback receives from the
occupant in a rear-end collision. The movement
of the head restraint helps support the occu-
pant’s head by reducing its backward movement
and helping absorb some of the forces that may
lead to whiplash-type injuries.
Active Head Restraints are effective for collisions
at low to medium speeds in which it is said that
whiplash injury occurs most.
Active Head Restraints operate only in certain
rear-end collisions. After the collision, the head
restraints return to their original position.
Adjust the Active Head Restraints properly as
described in this section.
SPA1025
Safety—Seats, seat belts and supplemental restraint system 1-9