>I'm just trying to think what makes a roundabout a roundabout instead of >just a one-way system. So far I've come up with:
>1. It is one way in the appropriate direction (clockwise in the UK) >2. All the roads leave/join the outside of the loop (*) >3. It generally isn't very built-up in the middle (**) >4. It has a reasonably circular shape (***) >5. It is signposted as such > >Of course, there are sadly lots of exceptions... > >* Increasingly there are roundabouts with roads running through the >middle: >http://www.openstreetmap.org/?lat=52.936219&lon=-1.24996&zoom=18&layers=B000FTF >The road through the middle is generally one-way though, and usually just >one road. > >** >http://www.openstreetmap.org/?lat=50.910579&lon=-1.400756&zoom=18&layers=B000FTF >(The Charlot Place roundabout in Southampton now has the reasonably tall >Jury's Inn hotel in the middle of it - I'm sure people can think of many >others) > >*** Can't think of any oddly shaped roundabouts off the top of my head, >but I'm pretty certain that there are plenty. :) How about this one: <http://osm.org/go/0EFYMXaIH--> which fulfills all of the above 5 criteria, but just has a 'short-cut' across one side. In this case, each 'junction' on the roundabout is controlled by traffic lights and has between 2 and 5 lanes. I have to navigate it frequently and I can't say it's one of my favourite ones! Donald
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