I'm not sure I follow your example, but... The rule of thumb is to only split the way when there is a physical barrier preventing moving from one lane to the other.
As for Key:lanes, according to https://wiki.openstreetmap.org/wiki/Key:lanes it's only for marked lanes, but Microsoft has been adding many Key:lanes even when unmarked, though there's a bit of discussion about this https://wiki.openstreetmap.org/wiki/Talk:Key:lanes. On Fri, 8 Feb 2019 at 08:41, Graeme Fitzpatrick <graemefi...@gmail.com> wrote: > > So what is considered "best practice" when it comes to lanes - physical or > theoretical markings? > > Situation: you have a two-lane, one-way, primary road with an exit coming up. > > Your road is marked as highway=primary, one_way=yes, lanes=2 > > Should you map in an actual, physical lane splitting off to the left along > the curve of the exit ramp, marked as =primary_link, lanes=1; or change the > =primary to lanes=3, turn:lanes=slight_left|none|none? > > I'll openly admit that I add extra physical lanes because I think it "looks" > better that way & makes more sense to follow a "real" road on the map, rather > than just be told "turn slightly left". > > Thanks > > Graeme _______________________________________________ Talk-au mailing list Talk-au@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-au
