While I suggested the value "opposite" with the same reasoning as Pieren i.e. to guarantee this tag is used on ways only when necessary; the truth is there wouldn't be any guarantee because the values "left" and "right" still exist (though theorically only for countries).
The advantage of *not* having "opposite" as a value is not to need to verify the country's driving_side to be able to tell which driving_side that way has. Since we need to use validator rules anyway, we could use: 1. driving_side is only allowed ways that belong to countries that have driving_side specified; 2. driving_side (on ways) must have the opposite value of the driving_side specified in that country. 2014-03-25 5:51 GMT-03:00 Pieren <pier...@gmail.com>: > On Mon, Mar 24, 2014 at 4:37 PM, Tobias Knerr <o...@tobias-knerr.de> wrote: > > > Could you elaborate? > > The "left/right" is only on boundary relations. > The "opposite" is only on ways. > This will also avoid a proliferation of unnecessary > "driving_side=left/right" on ways where it's only required for the > non-default rule. > > Pieren > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging >
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