[Tagging] noexit=yes on ways ?

Dave Swarthout daveswarthout at gmail.com
Sat Apr 5 00:29:10 UTC 2014


I always thought the meaning of noexit=yes was very clear. Obviously there
is some confusion I was not aware of. If a highway ends with no way to
continue, the final node is tagged with noexit=yes. I only use it if I am
sure there is no way forward from the end of the particular way. As someone
who started working with OSM in order to improve my Garmin's GPS maps it
adds no special rendering of the node AFAIK. Whether Garmin's autorouting
algorithm notices the tag is unknown to me, however, as a mapper working in
an area where other mappers are active, I know that when I see that tag
there is no need to revisit that highway to "see where it goes".

I'm just guessing now when trying to understand why someone would tag an
entire way with noexit. In the United States there is often a sign at the
entrance to a street that has no outlet. It sometimes says "NO OUTLET" or
"DEAD END". Maybe these people are tagging the way because they expect
someday to see a "sign" or symbol on their maps at the beginning of the way
rather than the end?

Regards,
Dave


On Sat, Apr 5, 2014 at 12:51 AM, André Pirard <A.Pirard.Papou at gmail.com>wrote:

>  On 2014-04-04 17:35, Pieren wrote :
>
> On Fri, Apr 4, 2014 at 4:14 PM, Nelson A. de Oliveira <naoliv at gmail.com> <naoliv at gmail.com> wrote:
>
>  On Fri, Apr 4, 2014 at 10:54 AM, fly <lowflight66 at googlemail.com> <lowflight66 at googlemail.com> wrote:
>
>   If it is accepted, I gonna hange the wiki accordingly and gonna ask a
> for validator checks in JOSM, as we have more than 100,000 ways with
> this tag.
>
>  Basically I agree with the current text ofhttp://wiki.openstreetmap.org/wiki/Key:noexit (except that I don't
> agree to use it on ways).
>
>  As I understood, the "noexit=yes" means "this way is a cul-de-sac".
> What is unclear if the tag is on the last node or on the way itself ?
> It is still a cul-de-sac...
>
>  As it has been said before I think, there is no need for a cul-de-sac tag.
> A cul-de-sac is obvious either because the end of the way is a cul-de-sac
> or because other tags make it one.
> At which end of the way would be a cul-de-sac if some tag were on a way to
> indicated it?
> Or, maybe, we're inventing ways with a cul-de-sacs at both ends?
>
>  It seems that 40% of the "noexit=yes" tags are on ways and are
> understandable by their contributors but 100% of the persons writing
> on this thread do not understand what 40% of the contributors do ...
> So, instead of trying to change 40% of the contributors with wiki
> fiddling and josm obscure validations, you should try to open a bit
> your mind and accept that contributors can supply the same information
> in different ways (or nodes ;-). Stay open like "Open"StreetMap ;-)
>
>  It's not a question of understanding what contributors do, it's a
> question of the contributors understanding what the wiki says, clearly:
> "This tag is mainly useful where a road or path ends close to another way
> but where it isn't possible to get through due to a barrier or other
> obstruction which may otherwise look like a mistake for a connection to the
> nearby road. It helps other mappers and quality-check programs to
> understand the situation correctly."
> What many contributors do is indicating obvious cul-de-sacs like saying
> the tip of my finger is the end of it.
> Or should we complain that all cul-de-sacs are not tagged?  There are a
> great many !!!
>
> Others make the mistake tagging a cul-de-sac traffic sign with noexit.
> On one hand, this is obviously trying to tag the cul-de-sac where it is
> not.
> On the other hand, such signs exist because the driver can't see the
> blocked end of the road. That does not happen when one looks at a map.
> That's another error that was spotted by a lynx-eyed contributor and that
> I corrected in another part of the wiki.
>
> Cheers,
>
>   André.
>
>
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>


-- 
Dave Swarthout
Homer, Alaska
Chiang Mai, Thailand
Travel Blog at http://dswarthout.blogspot.com
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