The US Department of Transportation is actively promoting increased use of roundabouts to reduce traffic congestion, intersection collisions and carbon emissions. Roundabouts also improve bike and pedestrian safety. A mini-roundabout (MRB) is a smaller diameter version of the familiar traffic circle, appropriate for use in hundreds of thousands of highway, residential and commercial intersections. MRBs, like traditional roundabouts, provide a physical structure that slows and guides traffic. An MRB differs from more familiar large traffic circles in one significant way. Large trucks and buses making turns in a small diameter MRB must drive over its central circle and splitter islands to navigate the turn. ZKxKZ has developed a low cost recycled plastic MRB system designed to greatly reduce the time required for installation. The modular components of the system allow a damaged section to be replaced in minutes with a socket wrench.

Images show prototype systems installed in the US and Canada.