Why it matters: The real hierarchy: who overrules whom on priority?

Without this hierarchy you do not know what to do the moment two rules contradict each other — exactly what happens at a broken traffic light with a traffic controller present, as near Hengelo, or at a junction in Loppersum where you enter on green while someone else is running a red light. Anyone who does not know the hierarchy hesitates at the wrong moment, or wrongly yields to someone else's mistake.