driving

My oldest is learning to drive in Singapore. I am having troubles with drivers in Nebraska. THIS is my question, when did stop signs develop a new definition. Someone will be sitting at a four way stop and turn right...no matter when...like right turns don't count...even if that is the way I want to turn. Or when did it become, "If I go very fast, it is a two for one sale...just sneak by really fast with the guy who has the right of way. Or when the blinker says they are turning and the front of the car indicates it's turning...when did that become a clue for a straight away drive? Laurel, Singapore at least has the regulations of the left side. I think stop's regulation means do whatever you want. No wonder life seems confused.