Dupont Circle in Washington DC could take a page from this. It's the exact opposite principle: inner and outer circles, with sets of inner and outer traffic and

Dupont Circle in Washington DC could take a page from this. It's the exact opposite principle: inner and outer circles, with sets of inner and outer traffic and pedestrian lights at each incoming road. At rush hour, it's fortunate if one vehicle can make it through each light. Other traffic circles in the area, in my experience, work much better without such control.