[Tagging] Foot / sidewalk access tagging

[Asa Hundert]

Am So., 18. Dez. 2022 um 21:32 Uhr schrieb Brian M. Sperlongano
<zelonewolf at 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