A traffic circle is a one-way, circular intersection in which traffic flows around a center island, similar to a roundabout. Traffic circles or rotaries, operate under different traffic rules than a roundabout. In Santa Cruz, they are used as "traffic calming circles" to slow down traffic, and not as a controlled intersection, where roundabouts are used.
There are a few traffic circles in the city of Santa Cruz. Two are on the westside of town. One at the intersection of King Street / Ladera Drive, and other at the intersection of King Street / Baldwin Street. The one on the eastside of town is at the intersection of Fairmount Avenue / Pacheco Avenue.