Maybe they should be converted into a fixme=* value then, such as fixme="unknown maxspeed;unknown foot access;unknown wheelchair accessibility".
Though I've always assumed that an absent tag means its value is unknown, so foot=unknown and no foot=* whatsoever would mean the exact same thing. Some would disagree though.   https://lists.openstreetmap.org/pipermail/tagging/2018-January/034546.html On Sun, Feb 4, 2018 at 2:30 PM, Martin Koppenhoefer <dieterdre...@gmail.com> wrote: > > > sent from a phone > >> On 4. Feb 2018, at 12:44, OSMDoudou >> <19b350d2-b1b3-4edb-ad96-288ea1238...@gmx.com> wrote: >> >> If your analysis shows these tags don't add value (this is to say: don't >> make a gigantic update on places you haven't reviewed), you better remove >> them (possibly with a comment on the changeset explaining you're removing >> tags which don't make sense). > > > I don’t think they should be batch removed, I see them as a kind of fixme > tag, which might have been applied because the mapper thought an important > property needs resurvey, especially barrier=unknown or access=unknown on > barriers may indicate a high probability for access restrictions (e.g. you > can see in the aerial imagery the shadow of some kind of barrier but don’t > know more). I would be in favor of batch removing those unknown that have > been batch introduced but not those inserted individually > > > cheers, > Martin > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging -- Fernando Trebien +55 (51) 9962-5409 "Nullius in verba." _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging