What is the purpose of the headrest in a vehicle?
Active and passive safety
Explanation
The **headrest** is a **passive safety** device in vehicles. Its main function is to **protect the neck and cervical spine** in the event of a sudden impact, such as an accident. This is achieved by limiting the backward movement of the head, reducing the risk of spinal injuries.
- It is crucial to adjust the headrest correctly: the top should be at the same height as the top of the passenger's head.
- The distance between the head and the headrest should be **four centimeters or less** to offer optimal protection.
In summary, the headrest is not designed to prevent distractions or provide comfort, but to **protect the head and neck** from sudden movements in the event of an accident.
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