Boston, where I grew up, has a lot of "rotaries", especially on the old MDC "pleasure" roads that inadverdently became main commuter arteries. Rotary users there are divided into two rough groupings: 1) Unwitting innocents who somehow (correctly) believe that vehicles (theirs) already in the rotary have the right of way but who have too high a degree of social sensitivity to enforce their right of way. and 2) well-honed sociopaths who know that vehicles (theirs) entering the rotary do *not* have the right of way but who consistently manage to obtain it by strictly avoiding any semblance of eye contact with drivers in Group 1.

Jim