"Why does every Bostonian that has to drive through this traffic circle, er, rotary, have to completely lose their minds? I don't get it, its really not that hard. Tom, 80% is very generous....
I have the misfortune of having to drive around this crappy traffic control device every day on my way home from work. I routinely deal with people who travel on the innermost lane of the circle who decide at the last moment "OH! I want to go over the bridge!". Often I have an idiot in front of me too scared to enter the circle. (Its 5:15! There is going to be traffic! You have to pick a moment and go for it!) Most people don't realize that its two lanes going into and over the bridge. Then of course there are the people who get in the left lane to go over the bridge and who intend on making the right onto Comm Ave. Plan people...plan. "
-Yelp review for the BU bridge rotary
In Massachusetts, according to the Registry of Motor Vehicles Driver's Manual: in a traffic circle, traffic runs counter-clockwise. Always yield the right-of-way to vehicles already in the rotary (unless told differently by signs or police officers) and to pedestrians. Use your turn signals in the same way as any other intersection. Travel through the rotary and, when you are ready to exit, use your right turn signal. Don't stop in the rotary.
It could be worse.
The colloquial word for a traffic circle in Massachusetts is a rotary. However rotaries differ from what is known as a roundabout.
Traffic circles are supposed to increase safety by eliminating common crashes that occur with traditional intersections. In a traffic circle, because cars are going slower and in the same direction, crashes don't happen as much. And although unfathomable to imagine sometimes, they are supposed to ease traffic.