What does a "No U-Turn" sign indicate?

A "No U-Turn" sign clearly indicates that making a U-turn at that specific location is prohibited. This rule is put in place for safety reasons, as U-turns can create hazards for other drivers and pedestrians, especially in areas with high traffic or limited visibility. The absence of this action helps maintain a smoother flow of traffic and reduces the likelihood of accidents that might arise from sudden changes in direction.

While other options might suggest varying conditions under which a U-turn might be permissible, they do not align with the clear instruction provided by a "No U-Turn" sign. The sign's purpose is to eliminate ambiguity and ensure that drivers understand that a U-turn is not allowed in that area, reinforcing safe driving practices.