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


Small debate I’m having with another contributor for which we couldn’t find a previous consensus, so we’re asking for the community point of view on this.

Let’s say you have a street mapped with two way, a main one, and on its left side a separately mapped cycleway:

  • the main one (for example highway=residential) has all vehicle traffic going oneway (so tagged oneway=yes). To reflect the separately mapped cycleway, a tag cycleway:left=separate is added
  • on the cycleway (highway=cycleway) that is on the left side, one can cycle at least in the direction opposite to the one of the main way (so either oneway=no or oneway=yes but with an opposite direction vs the main way)

Question: should the main way be tagged oneway:bicycle=no?

Arguments pro:

  • data consumers that are interested in less level of detail know still the cycleway situation without doing a spatial fuzzy search for nearby highway=cycleway (otherwise there would be no reason for separate, we could just put cycleway=no)

Arguments against:

  • having a separate cycleway with a flow going in the opposite direction doesn’t make the main/larger/central/cars way two-ways for bicycles (agree that there should be a way to summarise detailed street mapping into a single big way, but don’t think this should be done this way)

This can lead to a broader debate: should access restrictions refer to always streets as a whole or to individual OSM ways?

Thanks for your inputs on this!

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