What is indicated by a roundabout road sign?

The indication of a roundabout road sign is that drivers should prepare to navigate through a circular intersection. Roundabouts are designed to improve the flow of traffic and reduce the likelihood of accidents at intersections, as they require vehicles to move in one direction around a central island. This design encourages slower speeds and allows for continuous movement rather than stop-and-go scenarios typically found at traditional traffic signals or stop-sign controlled intersections.

In the context of the choices provided, the focus on navigating a circular intersection is central to understanding the purpose of the roundabout. It alerts drivers to be mindful of the unique traffic flow pattern, which involves yielding to traffic already in the roundabout and then merging in at safe gaps. Understanding this helps drivers approach roundabouts confidently and safely.