[Tagging] "width" on streets: Time for a recommendation
Tobias Knerr
osm at tobias-knerr.de
Fri Sep 18 20:31:53 UTC 2020
On 17.09.20 02:35, Taskar Center wrote:
> This is yet another example why "sticking" the sidewalks onto the
> highway (as a tag) rather than mapping them as separate ways is
> appearing to be less and less practical. Please see our sidewalk schema
> proposal
> <https://wiki.openstreetmap.org/wiki/Proposed_features/sidewalk_schema>
> from several years ago.
Your sidewalk proposal unfortunately doesn't really address the crucial
shortcoming of separately mapped sidewalks: The lack of a reliable
mechanism for figuring out which section of road a given sidewalk way
belongs to.
I agree that we should be able to give sidewalks their own geometry, but
we _also_ need the relationship between sidewalk and road. So far, all
the proposals attempting to support the former end up sacrificing the
latter.
There have been some promising discussions recently around the
sidepath_of idea, but that's still just brainstorming. Until a practical
solution is found and actually used in the database, sidewalk mapping
will remain a choice between two options that are broken in different ways.
As for the main issue of the thread: I would welcome a clear definition
for the meaning of width. In my own mapping and when writing the
relevant code in OSM2World, I have counted sidewalks etc. as part of the
road's width if they are mapped as tags on the main way. But I would of
course change that if there finally was a documented and widely
agreed-upon recommendation. I don't care so much which one it is - but
we need one.
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