What is the main function of the headrest in a car?

The headrest in a car primarily enhances the safety of the occupants by preventing whiplash injuries during a rear-end collision. It supports the head and neck, reducing the risk of injury. While improving the seating position can be a secondary benefit, the headrest does not replace the seatbelt, especially in the rear seats, which remains a critical safety feature. Understanding the full functionality of the headrest is essential for ensuring optimal safety in accordance with German traffic regulations, which emphasize the importance of using both headrests and seatbelts to protect all passengers.