In Italian vehicle safety and emergency procedures (Codice della Strada), what is the rule regarding the correct vertical adjustment of the vehicle seat head restraint (poggiatesta) to prevent whiplash (colpo di frusta)?

Answer and explanation

Correct answer: A. The top edge of the head restraint must be level with the top of the occupant's head

  1. Step 1: In rear-end impacts, head restraints support the skull; proper alignment level with the crown prevents hyperextension of cervical vertebrae. Answer: The top edge of the head restraint must be level with the top of the occupant's head. Why not the others: the other options do not conform to vehicle safety standards and emergency regulations under the Codice della Strada.

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