[Tagging] RFC - Discourage railway=preserved
sfkeller at gmail.com
Mon Apr 12 17:25:52 UTC 2021
Sorry if I'm discouraging anybody. I'm open for almost any tagging
proposal as long as this namespace frenzy can be avoided.
Pls. read  about the drawbacks of this namespace frenzy: Its
detrimental for the OSM database! It's error prone, overloading tags,
making analysis unnecessary hard, etc. Don't move the value to the key
(as in railway:<VALUE>=yes) but keep a value where it belongs, like in
> "railway:preserved=yes" would work for everything, even if it is a monorail or whatever.
A strong indicator that this makes no sense is when the values are
always "yes" - or when "no" does'nt make sense.
I'm not a railway specialist but you got me now and I investigated a
bit: There's already gauge=* which is useful. Then there's this
(https://taginfo.openstreetmap.org/tags/railway=preserved =>) 7795
which seems to be colliding but still a rather small number yet. What
is the goal to tag "preserved" anyway? Separate it from "in use"? In
fact there's: museum train, touristic train and model train, which
seem to differentiate much better.
So a proposal could go along the lines of
>> railway_train = museum | touristic | model | heritage | ... << or
>> railroad_type = museum | touristic | model | heritage |... <<
... but this is just a shiny attempt of mine to offer alternatives of
this problematic "*.*=yes" proposal.
Am Mo., 12. Apr. 2021 um 07:34 Uhr schrieb Rolf Eike Beer <eike at sf-mail.de>:
> Am Montag, 12. April 2021, 01:06:07 CEST schrieb Martin Koppenhoefer:
> > sent from a phone
> > > On 12 Apr 2021, at 00:45, Mateusz Konieczny via Tagging
> > > <tagging at openstreetmap.org> wrote:
> > >
> > > tags used > 46 000 times
> > > ( https://taginfo.openstreetmap.org/tags/railway=narrow_gauge )
> > > and > 2 186 000 times
> > > ( https://taginfo.openstreetmap.org/tags/railway=rail )
> > sorry Mateusz, but 2 million railway=rail are not a point for keeping
> > railway=narrow_gauge, the latter could be tagged with rail as well (maybe
> > some are?)
> narrow_gauge is in relation to what is the standard width of that country. So
> a highspeed line from from France to Spain must change it's tagging at the
> border from railway=rail (north) to railway=narrow_gauge (south) because the
> regular gauge in Spain is 1668mm in contrast to the 1435mm used in remaining
> Europe. I guess most of them are still tagged "rail".
> But this is a totally different discussion. "railway:preserved=yes" would work
> for everything, even if it is a monorail or whatever.
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