What is the significance of the head rests on the vehicle’s seats during an accident from behind?

1. They can prevent neck and back pains during long drives.
2. Correct answer: They reduce forward and backward head jolting (whiplash).
3. They can reduce and prevent passenger knee injuries during frontal collision.
4. They can reduce and prevent passenger leg injuries during vehicle roll-over.

WhyIn a rear impact the head rest keeps the head from snapping back and protects against whiplash.