On Sat, Aug 22, 2020 at 01:28:07PM +0200, Mateusz Konieczny via Tagging wrote: > Aug 22, 2020, 12:17 by [email protected]: > > > 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? 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 [email protected] UTF-8 Test: The ๐ ran after a ๐, but the ๐ ran away
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