What advantage do roundabouts have over traditional intersections?

Roundabouts offer significant advantages over traditional intersections, particularly regarding traffic flow and safety. The design of a roundabout promotes continuous movement of vehicles, which can lead to quicker travel times by minimizing stops. Unlike traditional stop-controlled or signalized intersections where vehicles may need to come to a complete stop, roundabouts allow for merging and yielding rather than stopping, thus enhancing overall efficiency.

In terms of safety, roundabouts have been shown to reduce the number of collisions, particularly severe types like T-bone or head-on accidents. The circular design reduces the speed at which vehicles can enter the intersection since drivers navigate curves, which leads to lower impact forces when collisions do occur. Consequently, the combination of reduced conflict points and slower speeds contributes to an environment where the likelihood of accidents decreases.

This safety and efficiency reflect the primary reasons why option A is the most accurate representation of the benefits of roundabouts compared to traditional intersections.