[Tagging] noexit=yes wiki page update

[Florian Schäfer]

Hi André,

Am 01.06.2014 20:49, schrieb André Pirard:
> High,
>
> During the discussion of this tag, it was said that a sure culprit for
> incorrect noexit=yes tags, is a misleading phrasing
>> Use the noexit=yes tag at the end of a highway
>> <http://wiki.openstreetmap.org/wiki/Key:highway>=* to indicate that
>> there is no possibility to travel further by any transport mode along
>> a formal path or route.
> and that, this sentence being the first one, they read just that and
> ignore the warnings and tag noexit=yes on any dead end as said.
>
> Hence, it was decided to put the warnings first and to rewrite that
> phrase in a more precise way:
>> Use the *noexit*=yes tag on the node Node
>> <http://wiki.openstreetmap.org/wiki/Elements#Node> at the end of a
>> highway <http://wiki.openstreetmap.org/wiki/Key:highway>=* to
>> indicate when doubtful that the impossibility to travel further by
>> any transport mode is perfectly normal, due to otherwise existing
>> road layout. 
>
> Without any warning, Floscher
> <http://wiki.openstreetmap.org/wiki/User:Floscher>  put the misleading
> sentence back to the beginning, duplicating the correct version below.
> So, I removed that phrase to conform to the decision to explain that
> tag correctly instead of misleadingly.
Sorry, I didn't realize that it's an ambiguously worded duplicate of the
usage-paragraph. My main intention was to remove the parts, which said
that noexit=yes should be used on ways (which were added by you).
I thought there was sort of a consensus that it should not be tagged on
ways, so I simply changed the page. I didn't want to start another large
discussion like in March/April on Talk-de and Tagging (in which I both
participated), because I think most of the points were discussed
extensively there.
> He restored the icons that I had restored myself to "node only" but
> that Pieren had set to "node+way".
Do you find that good or bad?
> He also removed my sort of "acknowledgement" that noexit=yes is
> effectively being tagged on ways and which was the right place to say
> that it must *not* be done. I don't mind that removal at all, but you
> should bulk erase the noexit=yes tags on ways and explicitly say that
> they must not come back.
> When I see that first phrase, that the "When *not* to use" § does not
> mention "on ways" but on waterways and railways and that "Rendering"
> says "When tagged on a node..." I wonder if all those gotchas are not
> made on purpose.
I can't find any sentence in your version, that is saying, that the
tagging on ways "must *not* be done". It just said, that noexit=yes can
be tagged on ways and/or on nodes.
In my opinion the main purpose of the wiki is not to document tagging
trends, but best practices for tagging. I don't see the necessity for
adding a sentence stating that in the past it was used on ways, but if
you see this necessity, feel free to add such a sentence.
You are right, that the paragraph "When not to use" should mention the
ways. Thus I've changed the page again and added a sentence to that
paragraph, stating that usage on ways is discouraged.
>
> Well, I finally put this at the beginning:
>> Read important warnings first, then read tag syntax in paragraph
>> *Usage*.
>>
>> Do not use this tag on ways (only on nodes).
>>
> There's little excuses any more.
I've moved the second sentence to "When not to use", as you suggested above.
> Last thing: many people believe that road signs (and other funny
> things) are used by router software (and this is not encouraging at
> all to believe in OSM GPSes). They want to, and do, tag the dead-end
> road sign whose icon German dead-end sign
> <http://wiki.openstreetmap.org/wiki/File:Zeichen_357.svg> is used by
> this page to render the other road end. Expect that icon to pop up at
> both ends of the ways for added fun one of these days ;-)
This is mentioned and discouraged in the opening text.
> See you at the next noexit=yes on ways discussion.
See you,
Florian
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