On Sun, May 24, 2020 at 12:53 PM Volker Schmidt <vosc...@gmail.com> wrote:
> This proposal is not going to fly, unfortunately. As I said before the big > issue, at least in central Europe, is the massiv use of highway=path (with > the additional "designated" tags) for foot-cycleways. We will have to live > with that. The non-foot-cycle "paths" can be handled by surface, smootness, > and sac-scale tags. The point is that you can't draw any inference from the absence of a tag. We can't assume that because a mapper didn't tag sac_scale, that a path is passable to small children or disabled people. We might have to deal with the 'unknown' state for quite a while (and a router can try to guess from some combination of the other tags), but eventually we need to enable mappers to make the positive assertion that a path _is_ accessible to people who aren't skilled hikers - at least to the extent that urban footways usually are. The absence of a tag `potrzebie=*` doesn't mean 'there's no potrzebie here'; it means only `the mapper didn't say anything about potrzebie.' Drawing the conclusion that 'there's no potrzebie' would require an explicit `potrzebie=no` or some such. -- 73 de ke9tv/2, Kevin _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
