Is it safe for my rear-facing babys feet to touch the vehicle seatback?

There is no evidence that longer legs are at risk of injury in a crash; in fact, leg and foot injuries are more common in children facing the front of the car. Most children learn to fold up their legs for comfort when their feet touch the back of the vehicle seat. The only physical limit on rear-facing use is when the child's head comes near the top of the safety seat.

At this point, the child should be moved to a rear-facing convertible restraint. For taller rear-facing children, the concern is not potential leg injuries but possible head contact with the vehicle interior in a severe rear impact or during rebound from a severe frontal collision. This can be controlled by using a rear-facing seat equipped with a rear-facing tether (Swedish style).

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