[Tagging] fix the suggestion for replacement for pipeline=marker into marker=* + subject=pipeline ?

[François Lacombe]

Le mer. 31 août 2022 à 13:59, Mateusz Konieczny via Tagging <
tagging at openstreetmap.org> a écrit :

> I mapped pipeline marker only few times, I never was sure what is in
> pipeline (likely gas, but not sure enough to tag it)
>
> which tags I should be using?
>

marker=*
colour=*
at least

operator=* if readable on the marker.
Operator's name often allows to deduce utility=*
Like "A red marker in France with operator=RTE always implies
utility=power".

Being unable to describe the proper utility=* value will only encourage
someone else to find it.
It doesn't prevent to describe what is seen, particularly if mapper is
unable to make a choice between pipeline=marker and power=marker.
An electric shock hazard sign won't make a good clue as you find them on
pipeline markers for cathodic protection.

Le mer. 31 août 2022 à 14:04, Mateusz Konieczny via Tagging <
tagging at openstreetmap.org> a écrit :

>
> https://wiki.openstreetmap.org/wiki/Key:subject seems to be already used
> for something else
>

Its definition "The subject that the feature is about (explains,
commemorates, symbolizes, etc.)" clearly matches what we intend to do for
markers versus pipelines, aren't you?


> Maybe better to stop deprecation of pipeline=marker
> (and use marker=yes if someone maps marker without being aware of its
> meaning)
>

And then restore power=marker, telecom=marker, utility=marker?
It will be painful to define and then process as many values as marker's
usecases, instead of subject=* values, additionally to make mappers choose
among technical options they're not forced to master to map markers.

Cheers

François
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