Explore sidewalk-street relation primitives in this schema and in OpenStreetMap

[nbolten]

There has been an active and productive discussion in issue #2 around sidewalk-street associations, including ideas for how to infer this association and how OSM primitives may be used to unambiguously tag it. This has implications both for how OpenSidewalks makes OpenStreetMap tagging recommendations outside of this repo as well as what fields and primitives we describe in this schema document.

This issue will provide a forum dedicated to discussing how street-sidewalk relationships may be created, touching on all of these (separable) themes:

• Inferring the association using heuristics (e.g. spatial proximity between a sidewalk and a street).
• How this association might be taggable using current or proposed OpenStreetMap tagging schemas.
• How this association might be represented in the OpenSidewalks schema separate from but translatable to/from OpenStreetMap in the case that a sidewalk-street relationship can be explicitly tagged in OpenStreetMap.

@Woazboat, @amandasaurus, @matkoniecz, @1ec5, please continue any discussions on this topic here! It's very helpful. I believe the ball is partially in my court for creating some examples of challenges in inferring a sidewalk-street association spatially, so I'll ping again once I have those examples.