Those are indeed what a Massachusetts driver would call rotaries.
There does seem to be an increasing awareness elsewhere in the country, just in the past few years, that, if well-planned and for a certain range of traffic speeds and volumes, a rotary can be a good way to design an interchange. With luck, maybe more Americans will understand them.
The ones that don't work around here have often been overtaken by history one way or another; either traffic patterns have changed to the point where you'd really need a more complex multi-ramp highway interchange (but there's no place to put one), or new roads were badly hacked into the system.
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Date: 2006-01-24 06:32 am (UTC)There does seem to be an increasing awareness elsewhere in the country, just in the past few years, that, if well-planned and for a certain range of traffic speeds and volumes, a rotary can be a good way to design an interchange. With luck, maybe more Americans will understand them.
The ones that don't work around here have often been overtaken by history one way or another; either traffic patterns have changed to the point where you'd really need a more complex multi-ramp highway interchange (but there's no place to put one), or new roads were badly hacked into the system.