Florian Lohoff wrote: > The point is that a mini roundabout does need a LOT of preprocessing > to put it into some graph for your classical A* or Dijkstra. You need > to eliminate the node and replace it with a circular road much like > a junction.
What? No. No. You don't. I do precisely no preprocessing for mini-roundabouts in cycle.travel because they're irrelevant. They're just normal crossroads or T-junctions with no inherent priority other than traffic already making the turn (similar to a four-way stop in the US), and some paint in the middle. They are treated exactly as normal junctions and so they should be. > You would expect (as you see a roundabout sign) to get instructions to > take the n.th exit. What? No. No. You wouldn't. Mini-roundabouts are almost always at junctions with only three or four exits. The Government guidance explicitly states so (https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/561491/mini-roundabouts-report.pdf, para 3.9). Any UK driver would expect their satnav to say "turn left" or "straight on" at a mini-roundabout, not "take the first exit". Could I suggest that you refrain from tag-fiddling on a subject where you clearly have no experience? Richard -- Sent from: http://gis.19327.n8.nabble.com/Tagging-f5258744.html _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging