[Tagging] dog=yes for drinking water

[Volker Schmidt]

On Wed, 6 Jul 2022 at 17:57, Zeke Farwell <ezekielf at gmail.com> wrote:

> ...foot/bicycle/horse/dog/etc=yes is supposed to only specify that the
> noted mode is legally allowed. *=yes is instead commonly used to indicate
> some combination of usability, intent, and allowed access for the denoted
> mode.
>
You lost me there

My understanding is that foot|bicycle|dog|horse|foot|...=yes|no|...  is
about formal access rights. And this tagging is used millions of times in
OSM in that sense.
BUT we use the same format also in some cases with different meaning.
he most prominent one is wheelchair=yes|no, which is about physical access.
But there are others like bicycle=no on a barrier because the gap is
physically too narrow (I personally prefer maxwidth for this). I use
bicycle=dismount both for legal requirements and for situations where a
cycle barrier physically forces a (non-acrobatic) cyclist to dismount.
dog=yes on a watering point would be in that category, that it can have the
meaning no-dogs-allowed or not-suitable-for-dogs.

If this distinction between legal access and suitability/intent is
> important, I'd suggest we work to establish a new, clearer tagging scheme.
> For example legal access could be:
>
> access:bicycle=yes
> access:dog=yes
>
The problem are the millions of instances of bicyle=yes that have been used
to indicate the legal access situation

And intent/suitability could be:
>
> for:bicycle=yes
> for:dog=yes
>
(better tags required)

What is needed at the practical level in the access=context is the shades
of grey. We do have here here in Italy thousands of roads with the
"closed-for-all-vehicles" signs that definitely are intended to say
"closed-for-motorized-traffic". I tag these as bicycle=permissive if I know
that they are usually used by cyclists (in many case these are even part of
signposted bicycle routes). But I am drifting OT here.

Regarding the original fountain problem:

We do encoutner frequently water places that can be used by humans and
animal like cows (the example photo shows one of these) and in a different
context water fountains where humans and dogs can drink.

Another aspect is that we do have amenity=drinking_water, and we have
drinking_water=yes|no. What is missing is amenity=water or water=yes, when
it is not clear if the water is for for human consumption.
The example foto is showing this difficulty, as the sign on the water
outlet says that the water is not tested.
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