Am So., 18. Dez. 2022 um 21:32 Uhr schrieb Brian M. Sperlongano
<zelonew...@gmail.com>:
>
> I recently came across an unexpected tagging combination and I would like to 
> understand how folks in various places would interpret this:
>
> highway=<whatever>
> foot=no
> sidewalk=separate
>
> In my software's logic, I've made the assumption that foot=* applies to "the 
> whole of the road" including the roadway, shoulders, verge, sidewalks, and so 
> forth and thus excluded any roads that include that tag, regardless of other 
> tagging. I came to understand that this tagging was used by a mapper to 
> indicate that "pedestrians are not allowed on the roadway, however, they are 
> allowed on the sidewalk"
>
> 1) Would folks regard that as accurate data modeling?  2) I.e. should I 
> change my software to treat streets tagged in this way as 
> pedestrian-accessible, 3) or would folks regard this combination as a tagging 
> error?

This made me open gmail :) There are three questions: I marked them up
in the quote above. My take on 3) It is a tagging error, if
foot=use_sidepath was meant. 2) If foot=use_sidepath was meant, you
still should not change your software, because 1) the tagging might be
correct and not in error, in case there was a sign on the road, that
explicitly prohibited pedestrians from the carriageway, like the wiki
says.

I can conceive of a case, where even without a sign changing the
software would be wrong: A motorway tunnel. They have sidewalks, to
escape in case of accidents. And guess what, foot=no applies to the
sidewalk!

Asa

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