"Jim GM4DHJ ..." wrote in message
...

I seem to remember driving in Boston Mass that you had priority coming on
to the rotary ??????

Not that I'm aware of. When I drove in that area (eg the big rotary as you
enter the Cape Cod peninsular) the rules were identical to in Britain except
a mirror image: priority to traffic (which is already on the roundabout)
coming from the left. I remember arriving at that roundabout and all the
Americans were looking bewildered because rotaries are so ra they are
much more used to four-way stop junctions (which are an utter abortion) or
else major road/minor road cross roads. I applied normal roundabout rules,
sailed round and left - no fuss. I stopped somewhere a little while
afterwards and an American chap stopped behind me and was full of admiration
as we waited "in line" to buy a can of Coke: he'd been behind me at the
roundabout and saw what I did so he followed me. He was even more impressed
when he heard my English accent and realise that I was driving on what for
me was the "wrong" side of the road.

The priority to traffic that is waiting to join applies in some European
countries - I think the Netherlands is one - and it is a disaster because
their roundabouts are self-filling (at busy times they get clogged up with
traffic) whereas ours are self-emptying in the same situation. Having said
that, I didn't notice the coach entrering a roundabout when there was
traffic coming from the left when we went on a coach trip around the
countryside north of Amsterdam while on a cruise, so I wonder if the rule
has changed.