I am not happy with this new page. This tag is a tag with very strong local restriction: 2823 of a world total of 3166 are in the Polish city of Krakow. The vast majority of dual-carriageway roads elsewhere are not tagged in this way. This fact should be clearly stated prominently on the wiki page
Also the wording would need changing. " whether or not a highway is a dual carriageway or divided highway" >>> " whether or not a highway=* is *part of of* a dual carriageway or divided highway" The problem is that a real-world dual-carriageway "highway" corresponds in OSM to at least two ways tagged with the key "highway" and you are not intending to say, that by adding "dual_carriageway=yes" to a highway=* in in OSM that way were to represent what normally in OSM is represented with two ways. But this confusion is fuelled by stating that you can use dual_carriageway=no to indicate that a way does not represent a dual-carriageway real-world road. I think that the tag itself is a bad idea, and as it is used essentially only in Krakow, maybe the best thing is to eliminate those local occurrences and also declare "duel_carriageway=*" deprecated.as quickly as possible. Volker On Thu, 20 Feb 2020 at 07:42, Joseph Eisenberg <[email protected]> wrote: > I've created a page for Key:dual_carriageway based on existing usage > in the database: > https://wiki.openstreetmap.org/wiki/Key:dual_carriageway >
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