I like the idea of addressing the area-ness of steps! Thanks for taking the initiative on this. I have a couple questions and ideas that are hopefully helpful.
# curb (kerb) lines What would you think of tagging each step way as a kerb line? e.g., each step way could be barrier=kerb, kerb=raised, and could have other relevant kerb tags like kerb:height. This would make it very easy to know what tags to use for virtually any curb-like feature in OSM with non-trivial length: make it a curb line. This would also dovetail with other curb line conventions, such as knowing which side is higher (the side on the right of the way). # Determining upper/lower steps + number of members The example says you would set one step to role=lower and one to role=upper. Does this mean that the relation effectively applies to a single step? On a stairway, a single vertical part of a step could of course serve as both upper and lower, so we'd need more information if a single relation described the whole stairway. As a follow-up, what about using the order of relation members, like how bus routes do? This might make it easier to map whole stairways: order = ascending (literally). You could then use the role to describe segments if the stairway splits, though a role like role=1 might be off. # one-to-one way nodes? For mapping a step, the proposal says, "Create 2 ways, one for the upper part of the steps, another for the lower. They should have the same number of nodes and have the same direction." I'm wondering why they need to have the same number of nodes. It seems to me that the Queluz National Palace example would actually be impossible to map as a single area this way, since it splits into two stairways at the top. But I might be misunderstanding the proposal. # In combination with one or more highway=steps ways It's fairly complicated to route on areas, and this one in particular seems even moreso. What would you think of recommending mapping both an area (which is good for rendering/barriers/advanced routing) and one or more highway=steps (which is good for routing + network analysis + attaching to a building entrance) ways? Best, Nick On Thu, Mar 28, 2019, 8:06 PM Warin <61sundow...@gmail.com> wrote: > Hi, > > This one has been sitting for a long while! Still not certain about some > aspects of it. > > See what you make of it. > > https://wiki.openstreetmap.org/wiki/Proposed_features/Area-steps > > > Discussion here for preference. > > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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