[Tagging] Deprecation - waterway=riverbank vs water=river

[Mateusz Konieczny]

Feb 15, 2021, 10:08 by dieterdreist at gmail.com:

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> Am So., 14. Feb. 2021 um 21:42 Uhr schrieb Bert -Araali- Van Opstal <> bert.araali.afritastic at gmail.com> >:
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>> Is this a role or a guideline then, not        clear to me, how do we call it?
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>> https://wiki.openstreetmap.org/wiki/One_feature,_one_OSM_element
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> I don't recall if this was discussed, but the requirement to have only one "main" tag was introduced just "recently" (less than 2 years ago) to this page: 
> https://wiki.openstreetmap.org/w/index.php?title=One_feature%2C_one_OSM_element&type=revision&diff=1873923&oldid=1873154
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I modified it a bit just now:

https://wiki.openstreetmap.org/w/index.php?title=One_feature,_one_OSM_element&diff=2111436&oldid=2099808

From
"Ideally, every OSM element or object should be tagged with only one main feature tag"
to
"Ideally, every OSM element or object should be tagged with only one main feature"
as double tagging (multiple synonymous tags used at once) is broadly accepted,
from what I know.

> Clearly the one tag-rule is not currently followed, you can find millions of objects tagged as building=* plus something like amenity=* or shop=*, office=* etc. or barrier=* together with tags for an area, like landuse, amenity etc.
>
It would be worth mentioning on that page.

> If you look at the combinations of man_made=* there are also 1,67% combinations with highway (what's that?).
>
highway=footway
man_made=pier
(valid)

highway=toll_gantry
man_made=surveillance
(valid)

highway=tertiary
man_made=bridge
(invalid, but just 1571 worldwide, probably fixable within few hours)

You can find more using http://overpass-turbo.eu/s/13DP

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