Aug 13, 2020, 16:41 by [email protected]: > > > >> On 13 Aug 2020, at 11:41, Robert Whittaker (OSM lists) <>> >> [email protected]>> > wrote: >> >> On Sat, 18 Jul 2020 at 14:49, Richard Fairhurst <>> [email protected]>> > >> wrote: >> >>> ... However, note that the "removed" >>> >> sections mostly won't be reflected on the ground yet. Also, the >> dataset isn't perfect, as there's at least one bit near me where the >> route Sustrans have is wrong. I think it's also likely that some of >> the small gaps that have been created are inadvertent and will quickly >> be filled back in as volunteers review the new network. >> >> We also might need to think about our tagging, as there will now be >> more levels of routes: Full NCN routes, other promoted named routes >> that aren't on the NCN. How can we distinguish these in OSM? >> network=ncn and network=rcn are typically used for national and >> regional level routes rather than specifically the Sustrans NCN. >> > An interesting conundrum. I’m thinking about mapping and navigation in > London at the moment (see blogs at > https://www.lcc.org.uk/articles/finding-your-way-on-londons-cycle-infrastructure-1 > https://www.lcc.org.uk/articles/signage-and-wayfinding > > > So my understanding is that OSM normally only maps what’s actually on the > ground rather than what might be shown on a map (and there was some > discussion recently about this - > > https://www.mail-archive.com/[email protected]/msg19303.html> ) > > So even if Sustrans declassify it, if the signs are still up shouldn’t it > remain in OSM? > Yes, until signs are removed. Though for practical reasons - if there is not enough mappers to verify it fully and it is certain that signs will be removed it may be OK to remove it without such survey. > Conversely - how do you deal with older bits of say London Cycle Network > where signs have been removed or become unreadable. > If signage on the ground is gone or never existed then route relation should not be mapped in OSM*. Though I would first contact route operator before deleting/changing relation in OSM, if route is supposed to be maintained. *except rare and extreme cases where route is widely recognized without being signed, but such cases are rare > For example, I recently had an extended discussion about the status of the > paths in Brockwell Park in Brixton (changeset here - > > https://www.openstreetmap.org/changeset/83547875> ) Maps showed routes and > there may once have been signage but there is no longer any signage and > supporting information says there is not a designated ‘route’ here. > Then it is eligible for deletion. OSM is not place to map things that used to exist but are gone.
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