> -----Original Message----- > From: Michael Tsang <[email protected]> > Sent: Saturday, 23 June 2018 01:36 > > I have raised this topic two years ago but it seems that there is > no community consensus here. My problem is "How should we tag a > public transport through service route?" > > In my city there are the following cases: > > 1. A simple circular route where a passenger can normally stay on > board through the end / start point unless the vehicle is taken out > of service. > > Example: > https://www.openstreetmap.org/relation/2941692
My assumption has always been that this is what roundtrip=yes is supposed to mean > 2. A route where the vehicle always enter another specific route > unless the vehicle is taken out of service, and the passenger can > stay aboard. > > Example (the vehicle on one of the following routes will enter the > other reaching the end where the passenger can stay on board): > https://www.openstreetmap.org/relation/5955257 > https://www.openstreetmap.org/relation/5955258 I don't think there is anything currently defined for mapping that. I would guess one possibility to map this would be to add a member of role "vehicle_continues_on" after the last stop/platform member, referencing the next route relation. This might also model your case 1 as you could add the relation to itself (I think, not sure if that's valid.) > 3. A service where the vehicle runs a part of the route, and enters > another > mid-route: > > Example: A particular departure on route 751 below will enter route > 507 upon reaching Choy Yee Bridge in order to cope with passenger > demand at that particular time, the ref shown will be changed at > that en-route stop: > > https://www.openstreetmap.org/relation/2926506 (751) > https://www.openstreetmap.org/relation/6481316 (507) This sounds like they are route variations. That is: Create a copy of 2926506 that ends where the ref changes. Create a copy of 6481316 that starts where the ref changes. (Make sure both copies are part of the appropriate route master.) Then follow suggestion for case 2 to link these two together. > 4. A service, due to operational reasons, changes the ref in > particular fixed points along the route (e.g. when crossing system > boundary), but marketed as one route on promotional materials (e.g. > the train from Foshan to Kowloon, which operates as Z806 between > Foshan and Guangzhou and Z803 from Guangzhou to Kowloon, but it is > a single trip with absolutely no alighting allowed at > Guangzhou) If there was an actual stop at Guangzhou, this could again be modelled using the approach for case 2. But if the changeover point is not actually a stop, things get difficult. Are there stops between Foshan and Guangzhou? And between Guangzhou and Kowloon? The best you can probably do is just specify both refs: ref=Z806;Z803 Though I'm not too happy with that. Cheers, Thorsten _______________________________________________ Tagging mailing list [email protected] https://lists.openstreetmap.org/listinfo/tagging
