[Talk-GB] National Cycle Network removal/reclassification

[Mateusz Konieczny]

Aug 13, 2020, 16:41 by simon.still at gmail.com:

>
>
>
>> On 13 Aug 2020, at 11:41, Robert Whittaker (OSM lists) <>> robert.whittaker+osm at gmail.com>> > wrote:
>>
>> On Sat, 18 Jul 2020 at 14:49, Richard Fairhurst <>> richard at systemed.net>> > 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/talk-gb@openstreetmap.org/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.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/talk-gb/attachments/20200814/e19b987d/attachment.htm>