ROUNDABOUT: The traffic in the circle has the right of way!

A woman who lives in East Marlborough came up to me at the Y this morning and asked me to put out the word about correct traffic etiquette at the Route 82 roundabout in Unionville. Motorists who are actually circling the roundabout have the right of way, NOT those entering the circle. That's why there are prominent "Yield" signs at each entrance.
My friend said she saw an accident there that occurred because one driver assumed that the car in the circle would stop for her. Nope, that's not the way it works. The same rules apply to the Route 52 roundabout, too.