Looks like these UK traffic engineers got a little carried away...
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Which is pretty much how they work in the UK and France (although in France the drive on the right).JNL said:We have quite a lot of roundabouts, and they all work the same way: you give way to traffic coming through the roundabout, to your right (we drive on the left). They seem to work pretty well, but can be very dangerous for cyclists, especially when they are multi-lane.
Only two lanes - defined, at that? That would be a blessing. The rotaries I use most often - Concord, MA on Route 2 and the Bourne and Sagamore rotaries entering and leaving Cape Cod - seem to involve a concept I call "make-a-lane." Depending on volume, the rotary can contain anywhere between two and five "unofficial" lanes at any given time. The lanes are wherever you decide they need to be for your purposes.There has been one (well, a traffic circle) on Hwy 58 in northwest suburban Chicago for decades. It works, but the people who are not used to it get really confused. It does not help that it has two lanes.