What does a "No U-turn" sign signify?

A "No U-turn" sign indicates that making a U-turn at that particular location is prohibited. This regulation is intended to enhance safety by preventing potentially dangerous maneuvers in areas where visibility is limited or where the road configuration makes U-turns hazardous. Locations with a "No U-turn" sign may include busy intersections, highways, or residential areas where traffic flow and pedestrian safety are concerns.

While other options suggest various conditions under which U-turns may or may not be permissible, the presence of a "No U-turn" sign clearly communicates that such maneuvers are not allowed, thereby simplifying driver behavior and contributing to overall traffic safety. Understanding this sign is crucial for drivers to adhere to local traffic laws and avoid potential accidents or traffic violations.