The way I understood the tagging guidelines was that if there was nobody parked there, could you drive along the lane as usual. If you can't then I wouldn't include it as lanes=* and only tag it as parking:lane. If you can drive along it when vacant, but you can still legally park there then I'd include it as lanes=* and also tag parking:lane.
It's common that during peak hour the lane is used by traffic, but off-peak it's available for parking. On Fri, 20 Nov 2020 at 01:22, Tobias Zwick <o...@westnordost.de> wrote: > Hello all > > First of all, in the past, we have explored many edge cases for the > lanes-tag in various discussions and I am happy that for the most part, > it seems to be quite well defined by now. However, there is one edge > case which is not uncommon at all but still unclear or awkward to tag. > Look at this: > > https://westnordost.de/misc/2or1lanes.jpg > > It is a residential road marked clearly for 2 lanes, so it seems obvious > to tag it with lanes=2. But on the other hand, you'll notice that there > are parking cars on the right side that effectively render the right > lane unusable. These parking cars would (currently) be tagged I believe as > > parking:lane:right=parallel > parking:lane:right:parallel=on_street > > And the wiki states > > > And the following lanes should be excluded: > > [...] Parking lanes [...] > > So here is an ambiguity in the documentation. On the one hand, if the > road has marked lanes, the number of marked lanes should be tagged, on > the other hand, there are these kind of "parking lanes" which do not > have their own space marked as a parking lane but simply absorb the > space assigned to normal car traffic. In OSM tagging, these are also > "parking:lane"s as far as I know. > > We need to dissolve this ambiguity by defining a way how to distinguish > between these two cases: > > https://westnordost.de/misc/parallel_parking_lane.png > (1) a dedicated parallel parking lane. This lane should not count as a > lane in the lanes-tag. > (2) (parallel) parking is allowed (and used). This should be irrelevant > for the lane count. > > My suggestion would be > (1) parking:lane:*:parallel = lane > (2) parking:lane:*:parallel = on_street > > Maybe especially those who recently involved themselves with parking > lane tagging out and about and its documentation could also state their > point of view here. According to the wiki edit history, looks like at > least Mateusz Konieczny, Supaplex030 and Minh Nguyễn were active. > What do you think? > > There is also at least one data consumer I know about that is using > parking lane information and displays it visually, > https://github.com/dabreegster/abstreet it would be good to know how > they interpret and visualize the data. > > Cheers > Tobias > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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