Rear shunt safety measures

My daughter has been rear shunted twice in the last few days. On each occasion she banged her head on the steering wheel resulting in two black eyes. She does not sit near the steering wheel, so I am concerned that the seat belt should have prevented this. What is the sequence of events inside the car that effect, in particular, the driver, in such a collision?

Asked on 5 March 2011 by tjhookermusic

Answered by Honest John
The belt should lock. In a severe shunt it should actually pull tight, but this part of the mechanism needs replacing each time.
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