Circular one-way roads can be described using a variety of synonyms that capture their unique features and function. These roads are often referred to as roundabouts, traffic circles, rotary intersections or gyratories. Roundabouts are common in many countries around the world and are designed to facilitate the smooth flow of traffic through busy intersections. They are characterized by a circular design and a one-way traffic flow that directs vehicles around a central island. Traffic circles and rotary intersections are similar in design and function to roundabouts, while gyratories are large circular intersections with multiple lanes and exits. Regardless of the term used, circular one-way roads are an effective solution to reduce congestion and improve traffic safety in urban areas.