What is the purpose of a traffic circle?

The purpose of a traffic circle, also known as a roundabout, is primarily to manage intersection traffic more smoothly. Traffic circles facilitate a continuous flow of vehicles by allowing cars to enter and exit without the need for stops at traffic lights. They help reduce the likelihood of severe collisions by encouraging lower speeds and providing clear right-of-way rules, which help maintain order among vehicles. This design enables drivers to yield at the entrance rather than stop, ultimately improving traffic efficiency and enhancing safety.

This is why the choice regarding managing intersection traffic effectively captures the main functionality of traffic circles. Other options, such as blocking traffic during rush hours, creating pedestrian zones, or reducing the number of lanes, do not accurately reflect the fundamental goal of a traffic circle, which is to improve traffic flow.