I think so long as there's an active ferry route running between two terminals then it should have a route=ferry[1] connecting them, roughly following the actual geometry the route normally takes. Where you have a ferry route that sometimes has a few variants, eg. sometimes skips a terminal, or sometimes goes to a different wharf, then that can be accounted for using the ferry route relation.
As the wiki points out[1], this could be a simple way, or a route relation[2] [1] https://wiki.openstreetmap.org/wiki/Tag:route%3Dferry [2] https://wiki.openstreetmap.org/wiki/Relation:route On 6 August 2018 at 23:20, Sigurjón Gísli Rúnarsson <sjonn...@gmail.com> wrote: > Hi, > > > I would like to amend the Ferry routes in NSW, particularly in and around > Sydney using a different approach. > > > > At the moment the Ferry routes are mapped with a *single way approach,* > by tagging a single way drawn along the whole route (i.e. Circular Quay > to Manly). The only benefit for the single line approach, that I can see, > is that it is simple and represents well on the map tiles. The problem > with this approach is that it does not allow ways to share different routes > and or variants. > > > > That’s where my particular problem lies. When I try to generate route > paths from GTFS Sydney Ferries and private ferries (TfNSW) using the OSM > Ferry route paths as the routing network, a lot of errors occur. Many > variants/trips in the GTFS dataset, which are based on recent timetable > information from Sydney Ferries and other private operators, have no > routing options. This is because of the single way approach between > wharves. > > > > For example, F4 Watsons Bay – Pyrmont via Rose Bay and Circular Quay: To > go from Rose Bay to Circular Quay the routing takes you around the harbour > (Taronga Zoo, Milsons Point, Balmain and Darling H) before getting to CQ > Wharf 5. Instead, there should be a direct route displayed between Rose > Bay and Circular Quay > > > > Another example is that one ferry service might use wharf 5 at Circular > Quay, but 20% of the trips/variants might use wharf 4. Those 20% of > trips/variants will not route to and from the correct wharf using the > single way approach. > > > > To be able to use the OSM Ferry route network for routing using GTFS files > from TfNSW, I want to map based on the *relation approach*. Just like > other transport modes are being mapped in OSM (i.e. bus routes). > > > > This would mean that more than one ferry route could share some ways, > enabling users to extract OSM ferry routes to use for routing. > > > > I would like to get thoughts from OSM users on this approach before I > start mapping in such way. > > > Regards, > > Maradona11 > > _______________________________________________ > Talk-au mailing list > Talk-au@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-au > >
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