On 17.10.2012 13:19, Martin Vonwald wrote: > 2012/10/17 Tobias Knerr <o...@tobias-knerr.de>: >> This problem does indeed exist, but it only appears with oneway roads > > I don't like something that only works in case a but not in b.
This was merely meant as an interesting observation that I wanted to point out for those who are still thinking about and playing with different approaches (as I understand you are, given that you presented your examples as a "first idea"). A finished solution would of course have to work for both cases. >>> Now (a time ago) I came up with something different: have a look at >>> part 3 of the first example: >>> http://wiki.openstreetmap.org/wiki/User:Imagic/LaneMapping * >>> >>> Please keep in mind that's just a first idea! What do you think? >> >> That is a very different approach from the divider tag. It amounts to >> tagging one of the effects of the divider, rather than the divider >> itself, so there is a lot of information missing. > > Actually we do the same thing when we map a oneway: as was pointed out > in how-to-map-thread we don't map "there's a blue signpost with a > white arrow" but instead we map the effect. I also don't see what > important information is missing. You can distinguish at most 4 types of dividers with two pairs of yes/no - but there are a lot more types out there. That's a big part of the original divider proposal, which even includes values like "dots". For example, how do you reconstruct the distinction between one or two solid lines from a "crossing:lanes=...no|no..."? Besides the different visual appearance, there are also subtly different legal meanings here. Another possible idea (= not the same as a finished solution) would be to introduce something like this: type:divider = solid_line|double_solid_line|dashed_line|kerb Basically, use the idea of lanes, but a different suffix - and consequently a different number of values. This has the advantage to allow multiple tags for a divider (e.g. colour:divider to distinguish white and yellow markings). Tobias _______________________________________________ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
