Because roundabout traffic only travels in one direction, the possibilities of head-on collisions and left turn-related crashes are virtually eliminated, Qin said. These are two of the most severe and deadly types of collisions.

Additionally, the circular design of roundabouts is intended to slow drivers to speeds where crashes are far less severe.

Roundabouts don't only offer safety benefits. They're also better for the environment, make traffic more efficient and ultimately cost less to maintain than other intersection types, Qin said.

Roundabouts also cost less to maintain than other intersection types because they do not use traffic lights or electricity.

Milwaukee definitely needs more roundabouts to help combat reckless driving.