What denotes a legal U-turn?

A legal U-turn is when no signs prohibit it and visibility is clear. This is important because it ensures that the maneuver can be executed safely without any restrictions placed by signage. Drivers must assess their surroundings, including road conditions and traffic, to confirm that making a U-turn won't interfere with other vehicles or pedestrians.

While designated signs indicating a U-turn can also point to a legal maneuver, the emphasis on visibility and the absence of prohibitive signs ensures that the turning driver is paying attention to their environment and obeying the existing traffic regulations. Other options may contain elements that might not fully account for safety and adherence to local laws, which are crucial when considering the legality of a U-turn.