> > Ignoring the source information for now, but I suspect it is very > similar to rights of way information in that it is probably derived from > OS maps. > > The following overpass query highlights the issue, Norfolk standing out > as especially bad. This is just tertiary roads, there are issues with > unclassified too. > http://overpass-turbo.eu/s/4xS
AFAIK there are some (but very few) roads where the C number is sign posted but not that I'm aware of any explicitly. Whether any of these have ever been captured in OSM is hard to tell. Unfortunately a brief cross check with Google Streetview, for the very few tertiary roads with 'source:ref=survey' don't seem to bare much scrutiny. The visible signposts don't have a 'C' in them. The 'source:ref' bit is only on a short section of an otherwise longer road anyway, so possibly a road split editing leftover. Obviously source=survey tags it too imprecise to tell whether a ref was surveyed. However I am in favour of this edit, but I think the edit needs to *only* change 'C' Roads, as some B roads are tagged tertiary. e.g. using something like this: <has-kv k="ref" regv="^C"/> In the above query will prevent altering too many things. Possibly only change things without source tags or with source=[nN][pP][eE], as a first iteration too. > I am going to use the horrible word, mechanical edit, but I feel it > needs sorting out. > > I propose that nothing is removed, but the ref tag for tertiary and > unclassified is moved to official_ref. This will retain the data and > allow OSM to be used by those who can make use of this data. > I know we should not tag for the renderer, but I think its ok to give > the renderer a clue as to which are displayed on signs and which aren't. > > Phil (trigpoint) > > > > _______________________________________________ > Talk-GB mailing list > Talk-GB@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-gb _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-gb