Looking at the description, I could imagine that the original idea was to use key:destination on motorways and similar roads (primary WITH primary_junction), because there you have normally no crossroads, but only “y junctions” on oneways. So for motorways it is more likely that there is only one version of the content of the signposts. But at normal crossroads, it may be more likely that the signpost content for one of the leaving ways is different (different content depending of the road from which you are coming).
However, that’s just raw guess about the original intention. Also unsure if all these assumtions are correct (on the ground). > I suggest to remove the section "When to use" and instead add the > following sentence (or similar): "Instead of they key destination, one > might also use the relation destination_sign, which is able to provide > detailed information about the type and colour(s) of the road sign." +1. Key:destination for the simple cases the the relation for the complex cases seems fine for me. Lukas PS: In the wiki, Key:destination is used for “signposts or ground writing”, but Relation:destination_sign only for signposts. I would extend Relation:destination_sign also to ground writings. And in general, I think it would be a good idea to harmonize the allowed tags (key:distance, key:time) between key:destination and relation:destination_sign. PPS: As far as I understand, the key:destination is used on OSM ways _after_ a signpost/groundwriting. If this is correct, the examples with the yellow and white signposts on the wiki page are confusing (tagging a motorway_link makes no sense here), and I would recommand to remove these three examples. Lukas Sommer 2015-01-10 17:40 GMT+01:00 Marc Gemis <[email protected]>: > I've asked this question several months ago on the help-website [1]. When > should I use destination and when the relation? Until now I did not get any > answer. Only recently I noticed the sentence you are referring to. From then > on, I followed this advice. > > So I'm interested to learn which is the preferred way of mapping. I didn't > add too many destinations yet, and can easily remap what I did so far. > > > regards > > m > > > > [1] > https://help.openstreetmap.org/questions/35719/mapping-destination-on-a-primary-road > > On Sat, Jan 10, 2015 at 5:27 PM, Martin Vonwald <[email protected]> > wrote: >> >> Hi! >> >> Currently it reads in the section "When to use" on the wiki page of the >> key destination [1]: >> "Attention: Do not use them for mapping at highway=primary and >> highway=secondary (or smaller). In such cases, a destination sign relation >> is the recommended way for direction directives. " >> >> Also above that sentence a list of road types is given on which that key >> should be used and only on that road types. >> >> May I ask who exactly recommended the use of the relation destination_sign >> and who decided, that destination may only be used on a few type of roads? >> >> I suggest to remove the section "When to use" and instead add the >> following sentence (or similar): "Instead of they key destination, one might >> also use the relation destination_sign, which is able to provide detailed >> information about the type and colour(s) of the road sign." >> >> That's the way I always thought about those two tagging schemes: >> destination is the simple variant and destination_sign the complex. I used >> both in the past, but only used the key lately. >> >> Best regards, >> Martin >> >> [1] https://wiki.openstreetmap.org/wiki/Key:destination#When_to_use >> >> P.S: I am aware, that I may simply ignore the wiki, but I don't want to >> lose any potential information, because someone thinks one must use >> destination_sign on e.g. highway=primary, but considers it as too >> complicated. >> >> _______________________________________________ >> Tagging mailing list >> [email protected] >> https://lists.openstreetmap.org/listinfo/tagging >> > > > _______________________________________________ > Tagging mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/tagging > _______________________________________________ Tagging mailing list [email protected] https://lists.openstreetmap.org/listinfo/tagging
