The prow:ref tag emerged from a discussion I started on this list about
the problem of using the ref tag to refer to PROW references. The
specific problem was that some highways were also designated footpaths /
bridleways, and so if the ref tag was used to tag a rights of way
reference it was given the same rendering priority on these ways as a
road reference. There was also no way to distinguish between a ref tag
which was for a road reference, and a ref tag which was for a prow
reference on that road. Thus the prow:ref tag was suggested.
At a later stage I noted the prow_ref tag started to be used. I did not
follow the discussion / reasoning behind that, but I find it hard to
believe that we need both a prow_ref tag and a prow:ref tag. So I
assume the prow_ref tag supoerceeded the prow:ref tag, but for the
reasoning outlined in the first paragraph I would not think it helpful
to simple use the plain "ref" tag on the Isle of Wight.
I cant follow the logic of "Visibly signed things go into 'ref'", since
that would seem to mean we don't need lcn_ref tags as these are visible
signed.
David
------ Original Message ------
From: "Robert Norris" <rw_nor...@hotmail.com>
To: "Talk-GB@openstreetmap.org" <talk-gb@openstreetmap.org>; "David
Groom" <revi...@pacific-rim.net>
Sent: 10/01/2017 00:36:41
Subject: Re: [Talk-GB] tag prow_ref
If I remember correctly the use of "prow_ref" tag is normally when the
reference is taken from the Council ROW information documents that are
compatible with OSM.
'ref' is used when the Reference itself is on the signed on the ground.
Thus for the Isle Of Wight, it is probably recommended to use the 'ref'
field since I believe most if not all ROW on the IOW have the reference
on the sign posts.
Whereas for most of the rest of England and Wales, only rarely are the
ROW references put on sign posts (I don't know of anywhere else that
does it consistently compared to the IOW). The only times I normally
see ROW references are on permissive notices or temporary route
diversion notices.
Thus similar to the recommendation for 'C' road references vs A/B
Roads. Visibly signed things go into 'ref' so used for A/B roads.
'official_ref' or similar should be used for C roads.
--
Be Seeing You - Rob.
If at first you don't succeed,
then skydiving isn't for you.
________________________________________
From: David Groom <revi...@pacific-rim.net>
Sent: 09 January 2017 23:56:51
To: Talk-GB@openstreetmap.org
Subject: [Talk-GB] tag prow_ref
Has any one got any instances of any providers of OSM data using the
prow_ref on rendering / routing
I recently pointed out to a mapper that if the reference numbers he was
adding to footpaths were official PROW reference numbers it was
recommended to use the "prow_ref" tag rather than the plain "ref" tag.
He's now amended his entries to prow_ref but is a little disappointed
it doesn't show up on the main map, OsmAnd, or Maps.me.
I have pointed out to him that OSM is mainly a provider of data, not
maps, so not everything is rendered on the man map, but it would be
nice if I could point him in the direction of where it is being used,
other than my own web site and custom OsmAnd file.
Thanks
David
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