an adjustable support for the head, attached to a car seat, to prevent the neck from being jolted backwards sharply in the event of a crash or sudden stop
head restraint in Automotive Engineering
(hɛd rɪstreɪnt)
Word forms: (regular plural) head restraints
noun
(Automotive engineering: Vehicle components, Bodywork, controls, and accessories)
A head restraint is a headrest or pad firmly supported behind the head of a driver or passenger to minimize whiplash injury in a crash.
The injury was caused by her head being thrown back against the head restraint during the collision.
The head restraint should be at a height which positions its center directly in line with the back ofthe driver's head.
The well-designed active head restraint system reduces the risk of whiplash injuries.