How can roundabouts improve traffic flow?

Answer: B — By reducing the need for stopping at intersections

Roundabouts can significantly enhance traffic flow by reducing the need for stopping at intersections. In a roundabout, vehicles continuously circulate around a central island, which allows them to yield rather than come to a complete stop. This ongoing movement minimizes delays that typically occur at traditional stop-sign or traffic signal intersections, where vehicles must fully stop and then wait for their turn to cross or merge. Consequently, the streamlined traffic movement in roundabouts leads to improved efficiency, reduces congestion, and enhances safety. By encouraging continuous flow, roundabouts also decrease the likelihood of rear-end collisions, as vehicles do not have to halt abruptly. They lead to a more steady and predictable flow of traffic, allowing for better management of vehicle speeds and gaps. This design encourages drivers to maintain a low speed while navigating the circle and minimizes the potential for high-speed conflicts that often occur at conventional intersections.