Probably every mother and every father knows this: The child rides his bike to school alone for the first time – and you would like to call the office immediately and ask if he got there safely. Many also tell of recurring horror visions that the son or daughter runs into the street after the ball at a moment when they are not being observed. From the point of view of most parents, road traffic is the greatest risk of accidents for children. At the same time, only nine percent go by
