When is a U-turn generally legal?

U-TURN LEGALITY varies by state and location: GENERALLY PROHIBITED: At intersections controlled by traffic signals in many states; where a 'NO U-TURN' sign is posted; in business districts (unless specific allowance); near a fire station, school, or pedestrian crosswalk; where visibility is limited (hill crests, curves); on divided highways (unless a designated break exists). GENERALLY PERMITTED: Where clearly signed; on two-lane roads with clear visibility and no conflicting traffic; at some traffic signals where signed. HOW TO MAKE A LEGAL U-TURN SAFELY: Check all relevant local laws first; ensure you can see at least 500 feet in both directions (many states specify a minimum sight distance); yield to all traffic; ensure your vehicle can complete the turn without stopping in opposing lanes; signal the turn.