2009/7/23 Donald Allwright <donald_allwri...@yahoo.com>: > >>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!
The roundabout I really dislike is at Winnersh Triangle, UK: http://osm.org/go/eusmtxB_j- If you look on some satellite imagery you will see it really does have a dual carriage way going right through the middle of the roundabout. -- Jon _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
