You don't turn anywhere on left until you get the green arrow
When making a left turn (at least in the United States) you must wait for a green light. If the light is a green arrow, then you have a protected light and you may proceed with your left turn. If it is a standard circular green light, you must wait until opposing traffic is clear, … Read more
In most places it is. There are some countries run by other religions that don't think so.
Yes, it is. Why exactly wouldn't it be?