The **headrest** is a passive safety device that protects the neck and cervical spine in the event of a sudden impact. For it to function effectively, it is crucial that it is positioned correctly.

- The top of the headrest should be at the same height as the top of your head. This ensures that, in the event of an impact, the headrest can adequately support the head and prevent neck injuries.

- The **eye level** is a useful reference for adjusting the headrest, as it generally coincides with the top of the head. This ensures that the headrest is in the correct position to offer maximum protection.

- Additionally, it is recommended that the distance between the head and the headrest be four centimeters or less. This minimizes the backward movement of the head in the event of an accident, reducing the risk of cervical injuries.

Therefore, adjusting the headrest to eye level is essential to ensure the safety of the driver and passengers.