Aug 23, 2020, 15:23 by f...@zz.de: > On Sat, Aug 22, 2020 at 01:28:07PM +0200, Mateusz Konieczny via Tagging wrote: > >> Aug 22, 2020, 12:17 by f...@zz.de: >> >> > On Sat, Aug 22, 2020 at 12:09:14PM +0200, Mateusz Konieczny via Tagging >> > wrote: >> > >> >> I would expect roundabout to be split in parts where >> >> ref is applying and parts where it is not applying, in other words >> >> without any special handling and tag it as usual. >> >> >> > >> > But the point is that on a roundabout the "name" references the name >> > of the _roundabout_ not one of the streets connected to it. >> > >> Yes >> >> > Same should apply to ref as it will reference the Roundabout >> >> why? >> > > 1. How do you tag a reference number for a roundabout when suddenly > the ref contains a ref of one of the streets? > Can you give example of roundabout with its reference number? For now it feels like a theorethical excercise. I never considered such case as I have never encountered or heard about junction with its ref. But there are named junctions, and I would look there for inspiration. > 2. Inconsistency - Some informations on the roundabout contain > informations about itself, and some are just copied over from > attached streets. > >> So it is about case where road has its own reference number >> and junction has its own reference number, separate from >> reference number of road routes? >> > > Yes - We should be consistent that an object carries informations about > itself and ONLY itself and not carry on some information of related > objects. To glue objects together or describe their relation > we typically use relations. We do this in Germany a lot - So primary > roads typically have relations carrying all road segments including > the roundabout. > >> In Poland road route continues through roaundabout and roaundabout way >> is part of such route. >> > > Correct - In Germany - at least for "Straรen NRW" thats the same. The > road surface of the roundabout is part of the Road through it. But > nevertheless - OSM has had a different Data Model to address/reference > roundabouts itself to be able to do landmark routing e.g > > "Take 1st exit at the Hampstead Roundabout, then take the 2nd exit at > the Foobar Roundabout". > > For this to work you have to put the information about the roundabout > itself somewhere. This has been documented for ages to be the > way carrying the junction=roundabout which has a name tag on its own. > > So using ref on the roundabout for either the road, or a reference > of the roundabout breaks the assumptions that informations on the > junction=roundabout only refer to the roundabout. With this concept > it may sometimes refer to one or more roads which are connected to the > roundabout. This basically makes the information useless. > > Flo > -- > Florian Lohoff f...@zz.de > UTF-8 Test: The ๐ ran after a ๐, but the ๐ ran away >
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