On Tue, 7 May 2019 at 21:15, Jarek Piórkowski <ja...@piorkowski.ca> wrote: > > 7c. From what I'm understand, this bus stop node does not have to be > connected to a pedestrian highway either, with routers presumably > jumping from the nearest highway?
Yes, this is what OsmAnd does. > 8. A stop_location (to use ptv2 terminology) on the way that vehicles > travel on could help with things like calculating and showing the > likely route the bus will take, but this can also be calculated > without the stop_location node by projection of other stop objects > onto the way It can be calculated. So why complicating mapping and maintaining public transportation routes needlessly? :) > 8b. Stephen initially said "we need stop positions so routers can get > people from stop to stop on the buses/trains"; a subsequent message at > 06 May 2019 13:53:10 -0500 (if I understood correctly) said that > stop_position can be optional in cases of simple geometry (which is > presumably vast majority of them) > 8c. What changes would people like to make? Clearer guidance as to > when stop_position and stop_area might be needed for buses - in cases > like ambiguous geometry due to multiple parallel highways? Or would > people prefer to ignore routing of buses between stops and advocate > for removal of stop_positions in all cases? Even if the stop (the waiting area) is mapped as a way or area, its centroid can be calculated and projected on the road. In most cases, parallel roads shouldn't be a problem either, as only one of them would be in the route relation. > 9. There are some cases that do not cleanly fit into hw=bus_stop > "PTv1" tagging, for example a sign-only stop served by both buses and > trams, or a waiting platform served by both buses and trams > 9a. Because we must retain hw=bus_stop per #3 and #5, any > accommodation of these cases must either be initially of tags, or > guidance on how to place highway=bus_stop tags If we go for the "improved PTv1" solution, my suggestion [1] was to place both highway=bus_stop and railway=tram_stop beside the road. Thus, highway=bus_stop and railway=tram_stop can and should be combined on one node. [1]: https://lists.openstreetmap.org/pipermail/talk-transit/2019-April/002052.html > 10. Meaning of public_transit=platform tag is dependent on context, it > unifies/duplicates some existing tags, arguably it sometimes describes > imaginary things, and it is disliked by many editors As i understand it [2], public_transit=platform does not describe imaginary things. On a node, it means the waiting area of a stop (i.e., it is equivalent to highway=bus_stop or railway=tram_stop), and on a way or area, it means a real platform that acts as a stop (i.e., it is a combination of highway=bus_stop/railway=tram_stop and highway=platform/railway=platform). However, in my opinion it would have been better to create a tag like public_transport=stop that -- as with all other tags -- always (regardless of whether used on a node, way or area) means the same thing (waiting area of a stop) and that could be used in combination with highway=platform/railway=platform if there is a platform. [2]: https://wiki.openstreetmap.org/w/index.php?oldid=625726 > 12. Many of the currently mapped tram systems have a railway=tram_stop > + public_transport=stop_position node on the rail, so we should > probably not change this scheme either without good reason I think that a simpler mapping and maintaining of the routes as well as a better routing are good reasons enough. :) > 13. There is currently no clear way for tagging stops that also have > physical platforms, except for PTv2 > 13a. This exists as physical feature in real world and should be > supported, in a manner compatible with platform-less stops > 13b. Should we add bus_stop/tram_stop on one of the nodes of the > platform way [4]? Next to the platform? As pointed out by Markus, we > can't do what might be the most intuitive method of the platform > way/area sharing bus_stop tag because the platform is also a highway= > tag. In my opinion, if we decide to stick with PTv1 tags, the best way would be to add a highway=bus_stop or railway=tram_stop in the middle of the highway/railway=platform way or area. Regards Markus _______________________________________________ Talk-transit mailing list Talk-transit@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-transit
