U-turns are generally legal in an intersection unless

Generally, you are allowed to make a U-turn if: There is no sign prohibiting it. There is a green left turn arrow or green light. You are in the far left lane.

Explanation:

unless a no u-turn sign is posted

evertheless he ought to be slow to believe and to act, nor should he himself show fear, but proceed in a temperate manner with prudence and humanity, so that too much confidence may not make him incautious and too much distrust render him intolerable.

explanation: