On Mon, May 03, 2010 at 12:25:06PM +0100, Toby Speight wrote:
I've found that I got roundabout errors when people created multipolygons with junction=roundabout - that tag was transferred to the synthetic ways of the multipolygon, which then overlapped with the real roundabout. I generally fixed that by deleting the multipolygon - a roundabout is a joined line, not an area.
What if there is forest inside a large maxspeed=100 roundabout and a lake inside the forest? :-) In my opinion, the right solution would be never to share a line for highways and areas. The shared lines are a nuisance when you add footways, cycleways, bus stops and the like. On a somewhat related note, I noticed that some have started tagging overlapping lines for landuse multipolygons: one tagless line for the role=inner and another line (with tags) for the inner area. That is kind logical, but overlapping lines can be confusing when editing the map. Marko