A rotary is an intersection with what feature?

Answer: C — Central island

A rotary, also known as a roundabout, is characterized by a central island around which traffic circulates. This design facilitates continuous movement of vehicles and helps to manage traffic without the need for stop signs or traffic lights. The central island acts as a physical barrier and guide for the vehicles, encouraging them to yield to traffic already in the rotary and reducing the likelihood of high-speed collisions. This feature is essential for the function of a rotary, enabling smoother traffic flow and improving safety compared to traditional intersections. In contrast, while traffic lights, four-way stops, and pedestrian crossings are common in various types of intersections, they do not define the specific nature of a rotary, which relies on the central island to direct and control vehicle movement.