I generally split these ways. A couple of reasons: 1. Traffic is generally not meant to make U-turns here. Occasionally there is an explicit no-U-turn sign, but most of the time there is a double white line extending from the end of the median strip preventing turning.
2. If a route relation uses the road, then it is required to split the road, as traffic following the relation doesn’t do a U-turn. As an example, have a look at https://www.openstreetmap.org/relation/1284045 <https://www.openstreetmap.org/relation/1284045> - ways https://www.openstreetmap.org/way/175260353 <https://www.openstreetmap.org/way/175260353> and https://www.openstreetmap.org/way/175260354 <https://www.openstreetmap.org/way/175260354> are the respective forward members for each direction of travel. (Probably easier to see in the relation editor in JOSM) Mark P. > On 22 Jan 2019, at 8:23 am, Nemanja Bračko <brack...@gmail.com> wrote: > > @Warin, > > I personally do not see why is it wrong if you split? It is just two segments > merged in one node. Geometry and data are exactly the same just it is > represented as two, instead of one line. > > If we go deeper in this issue, it is actually wrong, because you have > marked/mapped 2 physical segments with just one line. Angle is not natural > for any road. However, it doesn't make any difference in routing so it is > acceptable to be mapped as one line in cases like this. > > Thanks, > Nemanja
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