Roundabout
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A roundabout, a rotary and a traffic circle are all, with certain distinctions between them, a type of circular intersection or junction in which road traffic is permitted to flow in one direction around a central island, and priority is typically given to traffic already in the junction.
The Hotel Indonesia Roundabout in Jakarta, Indonesia
National Register of Historic Places plaque on the first traffic circle in the United States, at the intersection of River and Pleasant streets in Yarmouth, Massachusetts
Thomas Circle in Washington, D.C., 1922
Traffic ten abreast traverses the Place de l'Étoile. This traffic circle surrounds the Arc de Triomphe at the intersection of ten two-way and two one-way streets. It has no lane markings.
Rotaries in Massachusetts
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This is a list of roundabouts in the state of Massachusetts in the United States. Intersections that are called traffic circles or roundabouts in the rest of the US are referred to as "rotaries" in Massachusetts, as well as other parts of New England including parts of Connecticut, New Hampshire, Maine Rhode Island, & Vermont.
Rotary sign in Lowell, Massachusetts. Note the Yield sign