[Tagging] How are busways mapped, which are not guideways?

[Mateusz Konieczny]

Initial effect of separate highway=busway would be that all data consumers 
that have not added support to this new tag would not display them.

Due to nature of busways in most cases it would not be deeply harmful effect
or very disruptive, but for some unknown time (possibly very long)
highway=busway would be not rendered. Note that various data consumer 
are not obligated to render anything and vote on approving proposal is not changing anything.

But if highway=busway is an improvement to our tagging schema I would support such chane.

"tagging schema allows for differentiation between long roadways in which buses
may travel on carrying passengers, and short short service roads buses may travel on to enter a garage"

Is service=busway capable of this distinction? AFAIK yes,
"short short service roads buses may travel on to enter a garage" seems to be service=driveway


Oct 20, 2020, 17:51 by tagging at openstreetmap.org:

> I'm actually the author of the highway=busway proposal. I don't actually work with the database, so I don't know how disruptive creating a new highway=* tag would be. Having a separate highway=busway tag just seemed obvious to me. I would not hierarchically place busways under highway=service due to their role in carry large amounts of people to any number of destinations.
>
> However so, these idiosyncrasies will not bother me so long so the tagging schema allows for differentiation between long roadways in which buses may travel on carrying passengers, and short short service roads buses may travel on to enter a garage. The reason why this matters to me is because without this differentiation, the OSM-Carto devs are unwilling to add rendering for busways (that's different than service roads): > https://github.com/gravitystorm/openstreetmap-carto/issues/4226#issuecomment-712528676
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>
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