Thank you for the clarification. (Tagging the Y-junctions and traffic circle entrances results in a small rendering issue with the current Openstreetmap-carto style, but if is a tagging mistake we don’t need to change anything.) On Wed, Dec 19, 2018 at 7:52 AM Michael Booth <boot...@gmail.com> wrote:
> Agreed, a short Y section before a roundabout because there is a small > bit of painted or physical separation doesn't mean they are _link roads > - it's still the same through road. > > The wiki says "The _link tags are used to identify ... 'channelised' > (physically separated) at-grade turning lanes connecting the through > carriageways ... to other roadways" > > So this way is correctly tagged as a _link road: > https://www.openstreetmap.org/way/352297911 / > https://www.mapillary.com/map/im/5jD0ksQCmHPt11DizKyztA - but the other > ways connecting to the roundabout aren't, because they are through > carriageways (you could argue the roundabout is the thing doing the > linking here). > > On 16/12/2018 15:51, Greg Troxel wrote: > > Joseph Eisenberg<joseph.eisenb...@gmail.com> writes: > > > >> While checking the rendering of highway link roads (eg motorway_link, > >> primary_link, tertiary_link), I noticed that in some cases these tags > >> are used when a road splits in a Y-junction, for example before a > >> traffic circle / roundabout. In some areas these are the most common > >> forms of _link for less major roads, eg secondary_link and > >> tertiary_link. > >> > >> On the wiki there was some debate about whether it was correct to tag > >> a Y-junction as leading into link roads, or if these should only be > >> used for slip lanes and on-ramps which merge off of or onto the > >> through-lanes of another road: > >> https://wiki.openstreetmap.org/wiki/Talk:Highway_link > > It seems that the Y roads should not be link. link is about a > > connecting road used when changing roads, and the last few feet entering > > a rotary, especially when there is no other choice, does not fit that. > > > > In particular, if a road wouldn't be tagged differently at a rotary, but > > happens to be divided (dual carriageway) the last 50m, then it's fine to > > make two ways, but not to change the way type. > > > > _______________________________________________ > > Tagging mailing list > > Tagging@openstreetmap.org > > https://lists.openstreetmap.org/listinfo/tagging > > > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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