what’s the longest you’ve waited at a single light in a really bad traffic area (this one at rush hour), 3 min? 4min? what’s the longest it’s ever taken to get through an intersection with a roundabout, 30 seconds maybe?
truth is, traffic flows a hell of a lot better with a roundabout than it does with a light. even with lights that are coordinated by gps and have detectors on all legs of an intersection, you can still have situations where you are stopped for 2-4 minutes.