A traffic circle, also known as a roundabout, is a circular intersection where vehicles move in one direction around a central island. This design helps to improve traffic flow and reduce the likelihood of accidents by allowing cars to merge smoothly rather than stopping at traffic signals. In a traffic circle, vehicles already in the circle have the right of way, which encourages continuous movement. These structures can vary in size and complexity, often featuring landscaping or signage in the central island. Traffic circles are commonly found in urban areas and are designed to enhance safety and efficiency on the roads.