[Tagging] noexit=yes on ways ?

Marc Gemis marc.gemis at gmail.com
Tue Apr 8 11:33:18 UTC 2014

I tagged noexit=yes on the ways.

Why ? If I remember correctly some more experienced mapper told me it was
ok to do so.
And perhaps I read the wiki page before June 28, 2011, when there was
nothing mentioned about way or node.

 You cannot assume each mapper reads all wiki pages every week or follow
the tagging mailing list to keep up-to-date with the changing definitions
of tags.

Another reason is that, as Pieren pointed out, many features are mapped on
the way, not on a single point.
And yet another reason is that the OSM definition is different from the
traffic code definition, where noexit is placed on each street where cars
cannot leave the street via another exit.
So people might just tag it without reading the wiki at all.

The tag info on the wiki page shows enough usages on ways to make it a
viable tagging method.

Enough reasons why people might tag this incorrectly according to the
current wiki definition ? :-)



On Tue, Apr 8, 2014 at 12:57 PM, fly <lowflight66 at googlemail.com> wrote:

> On 08.04.2014 12:10, Pieren wrote:
> > On Sun, Apr 6, 2014 at 3:48 AM, fly <lowflight66 at googlemail.com> wrote:
> >> noexit=yes has nothing in common with the traffic_sign as:
> >>
> >> 1. it only is about motorized traffic where noexit=yes is about every
> >> travel mode.
> >> 2. it is used at the beginning of a cul-de-sac and an information for
> >> driver of motorized vehicles where noexit=yes is always tagged on the
> >> end node of a way without any connection and is a hint for mappers and
> >> QA tools.
> >>
> >> Please, do not mix it up.
> >
> > Please, return to earth. Tagging traffic signs is just a funny
> > activity in fully mapped areas. How do you specify a speed limit in
> > OSM ? with a "traffic_sign" tag on a node or primarily with the
> > "maxspeed" on the way ? I could repeat the same question for many
> > other features.
> Do not know if you speak german, but one person did tell us that she/he
> is mapping the traffic_signs as addition one the ways on talk-de at osm [1].
> > I'm still waiting some clear explanation about the difference of a
> > "noexit" and a "cul-de-sac".
> You find quite some differences, if you read the mails carefully.
> The major points in my view are:
> * We do not need to tag cul-de-sac as defined by the traffic_sign. This
> information is available through geometry and/or access tags.
> * The traffic_sign is always about motorized vehicles but we map for all
> traffic modes. noexit=yes is wrong as soon as there is any connected
> highway.
> One way to manifest the difference is to only tag it on nodes and not on
> ways.
> > Once you understand there is no
> > difference, you understand why 40% of the noexit tags are on ways ....
> > When you have this huge gap between the wiki definition limiting the
> > tag on the last node and the real contributors behaviour, you should
> > ask if the wiki makes sense but not blaim the contributors.
> No one did blame anyone. I only tried to find the reasons for this
> misunderstanding and one was definitely the wiki page which is still not
> perfect but did get some updates the last days. Some other pages where
> updated, too.
> > Note that for QA tools, the tag on the last node or on the way itself
> > are both technically easy to support.
> Sure, but overall it makes it more difficult and how should this work
> with splitting ways ? Could you please point me to one editor which
> properly works with splitting a way tagged with noexit=yes or don't you
> think that it is wrong that after the split both parts are tagged with it ?
> We could simply deprecate noexit=* and replace it with note=noexit but I
> am not sure if this solves our problem and tools need to support strings
> and multivalues as noexit might not be the only word of the note=* tag.
> fly
> [1]
> https://lists.openstreetmap.org/pipermail/talk-de/2014-April/107967.html
> _______________________________________________
> Tagging mailing list
> Tagging at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/tagging
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/tagging/attachments/20140408/72a1f516/attachment.html>

More information about the Tagging mailing list