Correct answer
To protect the head from strong movements in the event of an accident
It is a passive safety feature that helps limit relative movement between the head and torso, especially in a rear impact, reducing the risk of neck injury. It must be correctly positioned according to the manufacturer. If adjustable, set its height and clearance; not every headrest is adjustable. It does not guarantee prevention of every injury or stop you checking to the sides.
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To protect the head from strong movements in the event of an accident
To provide driving comfort for the driver
To prevent the driver from looking sideways and getting distracted
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