What is one consequence of not using a head restraint properly?

Using a head restraint properly is crucial for safety in a vehicle, particularly in reducing the risk of neck injuries during a collision. When a head restraint is adjusted correctly, it can help support the head and neck, limiting the backward movement in a rear-end crash. If a head restraint is too low or improperly positioned, it fails to provide adequate support, increasing the likelihood of whiplash or other neck-related injuries. Therefore, the consequence of not using a head restraint properly is an increased risk of neck injury, emphasizing the importance of proper adjustment to enhance safety during driving.