On Mon, 2021-05-31 at 22:18 +0100, Michael Tsang wrote: > On Monday, 31 May 2021 16:14:47 BST Roger Slevin wrote: > > and one in which I agree with Tony, Mark and Peter in saying that > > public > > transport services and timetables don’t appear to me to have a > > valid place > > in OSM > > We have already mapped the complete bus networks in certain cities. > In OSM > terms, a public transport route is defined as "the order where the > service > stops to carry passengers, and the path where it transverse on". It > does not > include the timetable data. > > I have also mapped a lot of bus and train routes in different cities > as well, > and it is very useful for OSM to have bus and train routes. When I > travel to a > new city I use OsmAnd a lot to find which bus I need to take to go to > a certain > direction, and where it will stop. > I think you are missing the point that GB is not a city.
Cities are densly pack and urban transport systems reflect this. In London tube trains simply stop at every station. This structure will not work when it comes to rural stations, and what we have works very well. It would not be efficient to stop every trains at stations which only have a few dozen passengers in a day. > The problem with GB railways is that each departure serves completely > different > stops, which means, if we strictly follow the "one variant = one > relation" > model as in current PTv2 schema, we have to map each departure as > distinct > relations on the map, because each departure serves different stops, > which mean > they are different variants. You also have to remember that the timetables and hence services are seasonal to reflect different passenger demands. Many of us have thought about train routes but concluded on a country level they are too complex and require a huge amount of mainatainance. The timetable changes every 6 months, and as a minimum needs to be checked. I started thinking about my local station, to the North trains can go to Crewe, Chester or Manchester Piccadilly. To the south trains can go to Shrewsbury, Birmingham International, Cardiff Central, Swansea, Carmathen, Pembroke Dock, Milford Haven and Fishguard. That is all before to start considering which of the dozens of stations each service calls, or may call at if it is a request stop. As other have said, this is not something that belongs in OSM. If you need to work out how to get somewhere then the train companies apps and websites work very well. If you want to include buses as well the traveline is excellent. Phil (trigpoint) _______________________________________________ Talk-transit mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-transit
