[Talk-GB] highway_authority_ref vs official_ref

[Dave F]

Hi

This is the background to most of the amendments:

https://lists.openstreetmap.org/pipermail/talk-gb/2018-August/021690.html

Some of the Overpass routines may return outdated data.

Briefly referenced in this wiki page:
https://wiki.openstreetmap.org/wiki/Key:unsigned_ref

DaveF


On 08/04/2022 09:48, Nathan Case wrote:
> Hi all,
>
> I've been looking through some of the UK's "frequently used tags 
> without a wiki page" 
> (https://taginfo.openstreetmap.org.uk/reports/frequently_used_keys_without_wiki_page) 
> with the aim of documenting some and the tag "highway_authority_ref=*" 
> has popped up.
>
> It's used almost exclusively in the UK (99.5%) and it looks like most 
> values were part of some import in 2019 
> (https://taginfo.openstreetmap.org/keys/highway_authority_ref#chronology). 
> The values indicate that it is used on C and U class roads in the UK.
>
> I was wondering if it is functionally the same as official_ref? This 
> is documented (https://wiki.openstreetmap.org/wiki/Key:official_ref) 
> as being for the "C-road network" and is used more globally, but does 
> have significantly fewer uses overall (~17k vs ~42k).
>
> Is there some history here, or just the classic two tags developed 
> separately of each other? Do we have a preference for which to use - 
> if they are indeed for the same thing?
>
> This will help inform what I document on the wiki for this tag.
>
> Thanks!
>
>
>
>
>
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