What message is given by signs indicating "no left turn"?

The signs indicating "no left turn" clearly communicate that left turns are not permitted at that specific location. These signs are crucial for maintaining traffic flow and safety, as allowing a left turn could create hazards or congestion, especially at busy intersections.

The precise wording of the sign leaves no ambiguity about the restriction—it specifically denotes that turning in the left direction is prohibited, thus ensuring that drivers understand they must continue going straight or turn right instead. Understanding such signage is essential for adhering to traffic laws and regulations, which in turn helps in preventing accidents and facilitating smoother traffic operations.