The only "roundabout" that I've been on (and quite frequently, as it's only 4 blocks from where I went to college in Johnson City, NY) has always been called a "traffic circle" -- and it has never used lights or other restrictions, even before it was upgraded to the more modern style of roundabout a couple of years ago.jondrush wrote:In my experience, a traffic circle has lights controlling motion around the circle. A roundabout uses no lights for traffic within the circle.
That said, there's a good article about the difference between "roundabouts" and "traffic circles" at the NYSDOT website. In part, it says:
And in this brochure, even more helpful information is given:NYSDOT wrote:The modern roundabout is a type of circular intersection that has been successfully implemented in Europe and Australia over the past few decades. Despite the tens of thousands of roundabouts in operation around the world, there are only a few hundred in the United States. Until recently, roundabouts have been slow to gain support in this country. ... However, substantial progress has been achieved in the subsequent design of circular intersections, and a modern roundabout should not be confused with the traffic circles of the past.
NYSDOT wrote:A roundabout is not a traffic circle. There are two main differences between a modern roundabout and a traditional traffic circle:
1) Speed – the design of a roundabout – smaller central islands and medians island deflectors - slows traffic upon entry and while circulating. Whereas the design of a traffic circle allows for higher speed entry and circulation.
2) Yield at Entry – as described above, traffic circulating in the roundabout has the right of way, and vehicles entering must yield to traffic already circulating. Whereas in traffic circles, motorists entering the circle have the right of way and circulating vehicles must yield or stop, often causing gridlock.
So what does all that mean for Waze? Well, since the old-style "traffic circles" will likely be replaced with more modern "roundabouts" (eventually -- or "soon", in Waze terminology ), I would suggest doing nothing -- just leave them called "roundabouts" and direct anyone who asks about it to check out these articles.