“..I think one can formulate the appropriate test in the present case in these terms: would it have been apparent to a reasonable man, armed with common sense and experience of the way pedestrians, particularly children, are likely to behave in the circumstances such as were known to the defendant to exist in the present case, that there was a possibility of danger emerging, to avoid which you should slow down or sound his horn or both.”
“In those circumstances, my conclusion is that it was not negligent to fail to sound the horn or to fail to stop. It was sufficient to proceed slowly, alert to the possibility that the child might turn and start to cross the road again. Stepping backwards off the pavement was, in my judgment, only an extremely remote possibility.”