What is the purpose of using a roundabout at intersections instead of stop signs or signals?

• To increase traffic congestion
• To encourage higher vehicle speeds
• To handle heavier traffic flow without the need for signals or four-way stops
  Explanation:

  "Roundabouts are sometimes used at intersections instead of stop signs. The purpose of a roundabout is to allow the intersection to handle heavier traffic flow without the need for a signal or a four-way stop."
• To reduce pedestrian safety