FYI, Antoine is referring to https://wiki.openstreetmap.org/wiki/Relation:destination_sign and there are 66,391 currently in OSM.
On Thu, Sep 5, 2019 at 8:31 AM Antoine Riche via Tagging < tagging@openstreetmap.org> wrote: > Hello. > > We are working with SNCF, the french railway company, to provide > pedestrian navigation inside and around railway stations in the Greater > Paris area. A dedicated routing engine, which provides indoor/outdoor > navigation and supports area routing, has been developed – this will be > presented during SOTM in Heidelberg. > > In order to improve the user experience, we want to provide walking > instructions such as "take the exit 'Rue de Londres'" or "Walk through the > gate labelled 'Northern lines'" rather than "Walk 75 metres then turn > left". Our problem is that such waypoints may have a different name > depending on the direction you cross them. The solution we used is to > create, when there is such an ambiguity, two destination_sign relations > pointing to the same 'intersection' member, one for each direction with the > 'from' and 'to' members swapped. Here is an example at Juvisy station : the > entrance named 'Accès Danton' when walking in ( > https://www.osm.org/relation/9471596) is named 'Quartier Seine' when > walking out (https://www.osm.org/relation/9471597). > > I wish to amend the Wiki to explain that destination_sign relations can > also be used for pedestrian and indoor routing, not just at "crossroads". > Does that require opening a discussion in the discussion page, or may I > just go ahead ? > > Now since the routing engine supports area routing, we need to loosen some > constraints on the members, that are documented on the wiki and enforced by > the JOSM validator : > 1/ allow areas for the 'from' and 'to' members, as in this example : > https://www.osm.org/relation/9722912 > 2/ allow multiple 'intersection' members, so that multiple doors can be > referenced by a single relation – example in Gare Montparnasse : > https://www.osm.org/relation/9823029 > 3/ allow multiple 'to' members, so that the same relation can point to > both a line and an area, and cover linear and area routing (no example but > I could create one). > > Are there objections to this proposal ? Do you recommend to open this > subject on the Discussion page or is it best discussing it on this list ? > > Regards, > Antoine. > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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