- Points of conflict prevent smooth flow of traffic. For the 4-way roundabout, the conventional roundabout has 12 points of conflicts, while the Two-Level RoundAbout by Roadnext has only 2 points of conflicts on each of the top and bottom road.  
   
   
 
   

- Vehicles entering from north-south and east-west use different roundabouts, which reduces the number of vehicles each roundabout must handle.

- Consequently, about half the number of vehicles are subject to about 1/6 of points of conflicts on the Two-Level Round-About.

 
   
   
 
   

- From the drivers’ point of view, flow of traffic is the same as the conventional roundabout. There are top and bottom roundabout, but the direction of travel determines which roundabout they use.

- Therefore, it is the same structure to drivers.

 
   
   
 
   

- The Two-Level RoundAbout can be applied to intersections of 5 or more roads.

- When the Two-Level RoundAbout is applied to a 5-way intersection, one of top and bottom roundabout would be connected to 3 roads.