[Talk-GB] Documentation of passing=* tag

[SK53]

Hi,

The tag seems to largely belong to the early days of OSM. The majority of
usage in the UK is an an area of Northamptonshire where User Ben
<https://www.openstreetmap.org/user/Ben> was one of the first mappers to
add a lot of detail in their local area.(around Towcester
<https://overpass-turbo.eu/s/1qc7>). Elsewhere, it's been used a bit around
Norwich and in the Lake District near Keswick, and for a canal tunne
<https://www.openstreetmap.org/way/26541031>l.

On the whole I suspect it is a bit subjective as a tag, and originally
pre-dated availability of any imagery. I'd probably prefer width as a tag
as this can now be measured with reasonable accuracy (0.25-0.5 m) on a lot
of aerial imagery. Other aspects which may add to the value as well as
width are the nature of the highway corridor. A narrow asphalt road with
grass verges is a different proposition from one with no verges and
dry-stone walls on either side.

Jerry

On Mon, 16 Jan 2023 at 08:08, Satoshi IIDA <nyampire at gmail.com> wrote:

> Hello.
>
> I would like to know more about the tag "passing=*".
> It seems that the tags passing=difficult and passing=caution seem to be
> commonly used in the UK, but I could find no documentation on the OSM wiki.
>
> https://taginfo.openstreetmap.org/keys/passing#values
>
> I would like to know what their meaning of them is.
> Would you happen to know anything about it?
>
> ## Background
> I am a mapper, editing in Japan.
> In the OSM, it is recommended to use `lanes=1` for these 1.5-lane ways.
> However, this does not express that it is possible to pass each other.
>
> Therefore, we would like to know more about the tag `passing=*`.
> If values such as `passing=yes/no/others` are available, we think that
> roads with `lanes=1.5` in Japan could be replaced by tags such as the
> following.
>
>
> https://www.mapillary.com/app/?lat=35.455479836101&lng=137.4147767667&z=17&pKey=364117255720380&focus=photo
>    lanes=1
>    passing=yes
>    (width=5.8)
>    (width:lanes=3.1)
>    (oneway=no)
>
>
> https://www.mapillary.com/app/?lat=35.464347638202&lng=137.4251362123&z=17&pKey=393768719177067&focus=photo&x=0.4932036975244724&y=0.578707555164132&zoom=0
>    lanes=1
>    passing=yes
>    passing:hgv=no
>    (width=4.4)
>    (width:lanes=3.6)
>    (oneway=no)
>
> It seems the tags `passing=difficult` and `passing=caution` are already in
> use in the UK, but I could not find documentation about `passing=*` in the
> OSM wiki, so I am not sure in what situations it means.
>
> https://taginfo.openstreetmap.org/keys/passing#values
>
> We would appreciate it if we could find out the situation of the tag being
> applied.
>
> Best regards
>
> --
> Satoshi IIDA
> mail: nyampire at gmail.com
> twitter: @nyampire
> _______________________________________________
> Talk-GB mailing list
> Talk-GB at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/talk-gb
>
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