In the US, when there is no sign on the road, it means that you can make a U-turn. When the authority do not want people to make U-turns, they will put up signs to tell you not to make U-turns.
In Singapore, it is the reverse. When there is no sign on the road, you are not allowed to make U-turns. When the authority allow you to make U-turns, then they will put up signs to give you that right. The two different systems serve the same purpose – to better manage the traffic. They may look quite similar, just coming from different direction, but the social repercussion is significant.
In Singapore, the no U-turn without sign culture has permeated every level of our thinking and every segment of our life. This no U-turn has created a way of life that is based on rules. When there is a U-turn sign or when there is a rule, we can U-turn. When there is no sign, we cannot U-turn. When there is no rule, we cannot do anything. We become paralyzed.
I call this “no-rule = no-do” phenomenon – the “No U-Turn Syndrome” or NUTS.