[Talk-GB] Separate sidewalks added by #waymap-project-SB in West London

[Steven Hirschorn]

I raised this once before on this list and didn't feel the response was
very positive so left all the sidewalk mapping - in my case it came onto my
radar in Acton.
It seems pointless mapping pavements on little residential streets because
the default expectation is a pavement on either side.
Like you say, it can negatively impact routing if the sidewalks aren't
joined to the roads at regular intervals, so it's easy to get wrong.
There's a justification for mapping sidewalks in some circumstances. The
thread is here:
https://lists.openstreetmap.org/pipermail/talk-gb/2021-October/027947.html

On Tue, 17 Jan 2023, 08:56 Robert Skedgell, <rob at hubris.org.uk> wrote:

> We have had a large number of separate sidewalks added around Shepherds
> Bush, mostly by user alisonlung (possibly based in the USA) with some
> contributions by ABullock with the hashtag #waymap-project-SB
>
> I have several problems with this:
> - there seems to be no documentation or explanation of this organised
> editing project (or I'm looking in the wrong place)
> - alisonlung has consistently ignored changeset comments from other users
> - the sidewalks were frequently decorative: they may look pretty on OSM
> Carto, but often provide no or negative benefit for pedestrian routing
> - some sidewalks were added with layer=-1, strongly suggesting that the
> mapper(s) had no idea what the tag means
> - some cycleways around Shepherds Bush Green were changed to footways
> without adding bicycle=yes, which I consider to be vandalism
>
> I have tried to fix some of these, but the volume and the amount of
> fiddly realignment required seems disproportionate.
>
> I propose to do the following:
> - retain and repair sidewalks on main roads
> (trunk/primary/secondary/tertiary) where there are defined crossing
> points, or where there is a clear benefit to pedestrian routing
> - delete most sidewalks added by these users on residential streets,
> leaving crossings as nodes on the highway
>
> --
> Robert Skedgell (rskedgell)
>
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