The roundabout has become an acceptable form of intersection improvement (like traffic signals and stop signs). The roundabout intersection provides several benefits when considering intersection improvements.
A roundabout can provide safety improvements to a closely-spaced intersection by channeling traffic around the central island, and using yield signs to help reduce vehicle wait time. The Federal Highway Administration released their brochure (FHWA-SA-08-006) that showed modern roundabouts provide a 76% reduction in injury crashes.
Roundabouts also provide a traffic calming effect along a roadway corridor and aesthetic benefits with landscaping at the island and around the intersection.