[Talk-GB] Status regarding the 'A8(M)' near Baillieston, Glasgow

[Andy Townsend]

On 22/01/2023 00:57, yasslay wrote:
> Indeed. I'll message a member of the DWG in order to see what they 
> think about it before I make any changes to the map.
>
I have no idea what the actual road ref is here (if it's not signed, 
it's just one person's word against another, based on conflicting sources).

To be fair, it hasn't actually been a high-speed edit war: 
https://osm.mapki.com/history/way/412543014

However, if it's not signed, *_please_* don't leave the OSM tagging 
suggesting that it actually is signed.

What method of people used to do that?  One of the following:

  * Use "unsigned_ref" instead of "ref".  925 uses* in Britain and Ireland.
  * Add a "ref:signed=no" tag.  333 uses in Britain and Ireland.
  * Add an "unsigned=yes" tag.  178 uses in Britain and Ireland.
  * Use "highway_authority_ref" instead of "ref".  45k uses, but that's
    for C roads etc. (arguably not the same think as here).

and of course:

  * Just leave the ref blank

My personal preference (as a mapper, not as a DWG member) would be to 
use "ref:signed=no", since whatever the reference actually is, it is an 
actual road ref, not some special class, as "unsigned_ref" or 
"highway_authority_ref" might imply.  Other people have different views 
(and in Britain and Ireland at least, unsigned_ref is more popular).

Best Regards,

Andy

* found via http://taginfo.geofabrik.de/europe/britain-and-ireland .

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