1. At the rise of the hand of the policeman, stop rapidly. Do not pass him or otherwise disrespect him. 2. If pedestrian obstacle your path, tootle horn melodiously. If he continue to obstacle, tootle horn vigorously and utter vocal warning such as "Hi, Hi." [...] 5. Beware of greasy corner where lurk skid demon. Cease step on, approach slowly, round cautiously, resume step on gradually.