Steve Hill wrote: > When adding roads, you don't always know what classification of road it > is (e.g. primary, secondary, tertiary, unclassified, etc). Quite a lot > of people seem to add these sorts of roads as highway=unclassified, with > the idea that these can be fixed in the future when the status of the > road is discovered, but this is wrong since "unclassified" is a real > road classification. > > Is there a recommended way of tagging these roads? Leaving them > untagged has a couple of problems: there is no way to later determine > that the way is a road if it is left completely untagged, and the road > doesn't get rendered. > > It seems silly to take the attitude that this data shouldn't be rendered > until it is complete - the submitter probably knows lots of useful data > about the way, such as that it is a road which is accessible to cars, > the actual classification of the road isn't really as important as > knowing it is there and that you can drive down it. > > Having a highway=unknown_road or similar would also help with people > tracing yahoo images - render them in a lighter colour so it is obvious > that the road hasn't been fully mapped. There are probably 2 groups of > users who want different things from OSM in this regard: Mappers want > to be able to easilly see which bits of the map are complete, so having > roads which haven't had a proper survey tagged as such is helpful. Map > users want as complete a map as possible - knowing that there hasn't > been a proper survey is useful, but seeing a road with questionable > accuracy is often more useful than no road at all Use your best guess of the type of road and add a tag: "fixme=not sure of the classification". There is a proposal to display fixme tags in potlatch to help find them later.
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