Florian, I saw that discussion on the German list. I don't understand it. I am familiar with the difference between a roundabout and a mini-roundabout. The difference is essentially the traversability of the centre, and the size. In the UK, where the OSM tagging was born, they have different road signs. Here in Italy they do not have different signs, and the only difference is the traversability. The rules are the same for both.
So the traversability being the difference between the two, it is useless to discuss the traversability of junction=roundabout. If the center is traversable it is, in OSM, not a junction=roundabout, but a highway=mini_roundabout. This is an old established tagging, and I do not see any need to change that. What I am after is tagging the dimension of mini-roundabouts. This seems to be useful information for longer vehicles. The specific mini-roundabout that triggered the question is this one <https://www.mapillary.com/app/?pKey=1288570081954544>, and it has a diameter of about 12m, and, yes, it is a mini-roundabout. Volker Il giorno ven 27 gen 2023 alle ore 22:35 Florian Lohoff <f...@zz.de> ha scritto: > Hi, > > On Wed, Jan 25, 2023 at 09:25:32PM +0100, Volker Schmidt wrote: > > I see that I was not precise with my question: I am after a way to tag > the > > overall diameter of the round surface composed of the mini-roundabout > road > > surface plus the traversable central part. This is an important measure > for > > trucks. I happen to live near one of these with an outer diameter of 12 > m, > > and that attracts regularly articulated lorries like the cheese attracts > > flies. This triggered the question. > > There has been a pretty lenghty discussion in the German forum just a > couple days back which i started. > > I started a discussion about mini_roundabouts here too a couple years > back. > > I still find the concept of tagging a "mini roundabout" _broken by > design_. > > The main difference we have in usage is - A mini roundabout will never > cause any announcements like "3rd exit" it will be "turn left". This > will be pretty confusing for anything larger that a small residential > street. > > And i think the misconception is still what a mini roundabout is. > A mini roundabout is not a mini roundabout because its center is > traverseable. Its a matter of fixing a priority problem in busy > junctions. > > So in case you have 12m diameter and a traversable center i would not > say thats a mini_roundabout. > > And while at it - We should introduce a tag "traversable=yes" or > something on the junction=roundabout way. > > Flo > -- > Florian Lohoff f...@zz.de > Any sufficiently advanced technology is indistinguishable from magic. > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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