The current page for route=ferry (https://wiki.openstreetmap.org/wiki/Tag:route=ferry) mentions that ferry routes are usually tagged as ways, but can also be made with relations. However, it is not clear what should be included in the relation. Certainly the ways in the relation should connect one pier to another, so that routing works properly.
Some users have also been including the terminal buildings as members of the relation, as a "platform". See this overpass turbo query (https%3A%2F%2Foverpass-turbo.eu%2Fs%2FHgy&sa=D&sntz=1&usg=AFQjCNErRovpb11Gv_sBnMYiLt9CX03ibQ). I believe this is done by analogy with one of the Public Transport tagging schemes. The main Public Transport wiki page does not mention this in the section on ferries (https://wiki.openstreetmap.org/wiki/Public_transport). There was a proposal (https://wiki.openstreetmap.org/wiki/Proposed_features/Refined_Public_Transport) which suggests tagging the pier of a ferry as the "platform", though it doesn't mention the ferry terminal building. Tagging a way that is not part of the ferry route as route=ferry is an issue for map users that assume that these ways are part of the actual path of the ferry, so I think it would be better to only include nodes for ferry terminals in the type=route relation for route=ferry. I don't quite understand the whole public transport relation system, however. _______________________________________________ Tagging mailing list [email protected] https://lists.openstreetmap.org/listinfo/tagging
