I like round-abouts too, they seem to be able to handle large amounts of traffic better then a crossroad. The connections between my residential highrise and my commercial areas always tend to get flooded with traffic, no matter how many mass transit options I give them. This round-about is doing its job well enough, it's yellow on the trafficmap, not red. My only problem is my industrial area. People can use the highway or the subway. Seems my city likes subway better even though its more aimed at rich people: Of course that part shows up as red often on the traffic map I'd love to see some examples of how to control the flow beteen residential highrise (just having 5 4k+ res buildings on an avenue seems to generate WAY too much traffic, even with added busstops and rail) and commercial areas.