Does the oneway=* attribute on a main road way also apply to a separately mapped, parallel cycleway or not?

[Woazboat]

Tags on a way apply to the way object itself and not any other sidepaths that would somehow have to be inferred by data consumers. I.e. this:

@Nadjita

All access restrictions apply to the OSM way they are attributed to. If the cycleway is mapped with cycleway:left=track, then they apply to this track as well. If the cycleway is just “referenced” with cycleway:left=separate, then they don’t apply to this way, because it’s a separate OSM way.

@westnordost

Please stay on-topic. Things concerning the behavior of SC can be discussed in the linked ticket.

This topic is about the meaning of / how oneway:bicycle should be interpreted.

Substantial discussion is already here and this question only came up because of SC, so I think it’s appropriate.

Anyway, speaking as someone who’s had to fix several cycleways recently because someone using StreetComplete removed the oneway:bicycle=no tag, please make doubly sure that whatever SC ends up doing doesn’t lead to more (unintentional) breakage.