2003-09-08 04:00:00 PDT San Francisco-- In San Francisco's Haight-Ashbury neighborhood, a place made famous by experimentation ... over a city test of traffic circles -- a miniaturized version ...

The city of Dublin has become famous – or infamous – for its roundabouts. Its signature traffic circle, the big one at Route 161 and Riverside Drive, has had some problems: since it opened last summer ...