On 30/04/10 13:55, Steve Bennett wrote: > Not sure what the technical definition of "island" or "concrete > circle" is. These particular examples are ever so slightly raised > (perhaps 15cm) and have a slight kerb.
Then they're roundabouts, as defined in the Aust Road Rules. > If we want to define a mini_roundabout as one that is strictly only painted > (not sure I've > seen such a thing here), then fair enough - but let's put in in the > wiki. "Roundabouts should be drawn out in full" is not sufficient. Technically, if they're just painted they're not roundabouts in Aust. By all means, tag them as mini-roundabouts if you will. But be aware that the specific road rules for roundabouts don't apply. > Not sure that makes sense, but I accept the explanation that you don't > need many nodes for most sensible zoom levels. It's only really in > something like Potlatch at high zoom levels that it's noticeable. > (Although aesthetically it still seems right to use more nodes, but > that's probably just a question of taste.) I usually tag small, 4-entry roundabouts with just those 4 nodes. Bigger ones normally get 8 nodes from me, and probably more still if the connecting roads are flared (so that entry and exit points are duly separated). Curve smoothness is a compromise. John H _______________________________________________ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
