Within traffic engineering there is a distinction between a "rotary" and a "roundabout" [1]. In Massachusetts, every circle-like configuration is called a "rota

Within traffic engineering there is a distinction between a "rotary" and a "roundabout" [1]. In Massachusetts, every circle-like configuration is called a "rotary" because... A. Most of them actually are rotaries. B. The average person is not aware of the distinction. [1] http://calmstreetsboston.blogspot.com/2012/04/rotaries-vs-roundabouts.html http://calmstreetsboston.blogspot.com/2012/04/rotaries-vs-ro...