On Tue, 01 Sep 2015 12:59:32 +0100 "Dave F." <dave...@madasafish.com> wrote:
> On 01/09/2015 12:52, Mateusz Konieczny wrote: > > > > - I am speaking about value of highway tag in OSM, not the official > > classification (in many places these may be the same or strongly > > related - but it is not a strict rule). > > Road reference classification tags relate to official road > classifications. Clues include colour of signs & the reference > numbers written on said signs. "Road reference classification tags relate to official road classifications" - relate? Yes. After all, both describe the same thing - importance of the roads. But it is not making them the same - there is possibility of differences. "Clues include colour of signs" - how it implies equivalence between official road classification and highway values in OSM? You may be confused by Default OSM style that currently is using UK road style (green highway=trunk, blue highway=motorway etc). > If the signs say it the M11, it's the M11 no matter how many lanes > are closed or what type of traffic can travel along it. Yes, all of these would get ref tag. Yes, maybe UK has sane classification system and all motorways are M-classified roads and M-classified roads are motorways making it equivalent. Maybe distinction between "road classified as trunk by government" and "road fulfilling role of trunk road" is absurd in UK. But for example Japan has "national highways" - that generally are equivalent of highway=trunk (according to http://wiki.openstreetmap.org/wiki/Japan_tagging ) but "Note that a little part of Japanese National highways have regions which cannot be accessed by motor vehicles, for example, steps, a pedestrian, a hiking way, or a ferry route." (found on the same page). See for example https://ja.wikipedia.org/wiki/%E5%9B%BD%E9%81%93339%E5%8F%B7#/media/File:%E9%9A%8E%E6%AE%B5%E5%9B%BD%E9%81%93_0004.jpg - it is ref=339 but certainly not highway=trunk. Just because UK has 1:1 relation between official road classification and OSM tagging scheme (caused by fact that UK road classification is sane and OSM originated in UK) is not making it universally true. _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
