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

[Joseph Eisenberg]

There is an approved tag for bus guideways, where specially-designed buses
are guided by a rail:

But how should ordinary busways be mapped? Right now the suggestion on
highway=bus_guideway is that other busways might be mapped highway=service
+ bus=designated + access=no. (See
https://wiki.openstreetmap.org/wiki/Tag:highway%3Dbus_guideway)

There is also a somewhat common tag service=busway which has been used 2500
times, and can be added to highway=service

Alternatively, the tag highway=busway has been used a couple of dozen
times, and there is a new draft proposal to use this tag instead of
highway=service, for standard busways:
https://wiki.openstreetmap.org/wiki/Tag:highway=busway

A new tag would require database users to adapt, but since guided busways
already have a specific tag, it seems odd that other exclusive busways are
mapped only as service roads.

-- Joseph Eisenberg
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