Children are more likely to be the victims in a car accident, And in London 75% of accidents where there are injuries involve people outside the car. I know when I am trying to park or pull away and there are kids about it is much harder to do safely as you cant see them and they will be unpredictable. Also if I ran over a child I could never forgive myself. Safety is designed into roads, cars, Pavements, Buses, Trains, Stations, Bus stops - even Car Parks ! Believe it! Pedestrians especially small ones are highly vulnerable.