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<div class="moz-cite-prefix">These 'airstrips' are popular in
Australia and Papua New Guinea too.<br>
<br>
To me they are runways - they are there for planes to land and
take off, any 'services' might also be tagged. <br>
<br>
It seams in New Zealand that these were originally tagged as
aerodromes but they were changed to airstrip to stop the rendering
of so many aerodromes at low zoom levels. <br>
Most of them are mapped as simple single nodes. <br>
<br>
Tagging them as aerodromes for me implies some services and
official recognition, not the kind of thing you want to imply for
these particular features. <br>
<br>
I have mapped them as runways - mostly with a surface tag (unpaved
mostly). this way they don't render as aerodromes, but they do
appear at high zoom levels. <br>
I don't see a need to differentiate them with a new tag, the
present tags of surface, fee, access, length, with, maxweight and
possibly others may be used to signify any differences. <br>
I don't add any aerodrome tags to them. <br>
<br>
-----------------------<br>
Slightly off topic - youtube video <br>
Landing at Ononge Papua New Guinea. Note the approach over the
village, clearly showing;<br>
why there are no 'residential' roads and why there are so many
showing up in the tool for 'missmapped villages'. <br>
why they are not aerodromes<br>
and why you want a good pilot in Papua New Guinea!<br>
<br>
<a class="moz-txt-link-freetext" href="https://www.youtube.com/watch?v=DItuay4Zaws">https://www.youtube.com/watch?v=DItuay4Zaws</a><br>
<br>
<br>
On 10-Oct-17 03:06 AM, J.J.Iglesias wrote:<br>
</div>
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<div><font size="2" face="Arial">Likewise happen in hundreds of
airstrips in Latin America, that are out of the ICAO
definition of Airport and more into the Airstrip.</font></div>
<div> </div>
<div><font size="2" face="Arial">By definition these airstrip are
Not controlled neither approved by the Aeronautical
Authorities but some of them are depicted in the Aeronautical
Visual Charts without data of the Landing Strip
Characteristics...</font></div>
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<div style="FONT: 10pt arial">----- Original Message ----- </div>
<div style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color:
black"><b>From:</b> <a title="daveswarthout@gmail.com"
href="mailto:daveswarthout@gmail.com" moz-do-not-send="true">Dave
Swarthout</a> </div>
<div style="FONT: 10pt arial"><b>To:</b> <a
title="tagging@openstreetmap.org"
href="mailto:tagging@openstreetmap.org"
moz-do-not-send="true">Tag discussion, strategy and related
tools</a> </div>
<div style="FONT: 10pt arial"><b>Sent:</b> Monday, October 09,
2017 9:35 AM</div>
<div style="FONT: 10pt arial"><b>Subject:</b> Re: [Tagging]
airstrip vs runway</div>
<div><br>
</div>
<div dir="ltr">Just to add some observations about Alaska to
this conversation. Alaska has hundreds of long strips whose
surface is gravel or grass long ago cleared of woods and brush
that served as landing strips for small airplanes. The small
airplane is almost as common in rural Alaska as automobiles
are in other areas. That's a bit of an exaggeration but as I
scan the satellite imagery I'm constantly amazed at the sheer
number of these landing strips that are scattered here and
there. And if one checks the USGS Topo maps as I do while
adding geographical features to Alaska, one can see where
airstrips existed in the past but when inspecting the location
with satellite imagery, no trace of them can be found. Years
ago, airplane and airport aficionados using sources such as "<a
href="http://ourairports.com" target="_blank"
moz-do-not-send="true">ourairports.com</a>", have added
hundreds (thousands?) of them to OSM as though they were
actual airports.
<div><br>
</div>
<div>I also add an admission that, not being aware of any
other tagging or any need for differentiation as to type,
I've mapped dozens of these as runways, sometimes adding a
surface tag, other times not.</div>
<div><br>
</div>
<div>But they are surely different than one would expect to
find at a "real" airport facility. The more remote variety
offer no services, not even fuel, and are suitable for use
by small planes only (bush planes). Many are abandoned or in
need of maintenance. I would not want to give the erroneous
impression that these runways are actually the same sort of
beast an official airport provides.</div>
<div><br>
</div>
<div>I think therefore that there is a definite need to tag
such landing strips differently.</div>
<div><br>
</div>
<div>AlaskaDave</div>
<div><br>
</div>
<div><br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Oct 9, 2017 at 7:47 PM,
Christoph Hormann <span dir="ltr"><<a
href="mailto:osm@imagico.de" target="_blank"
moz-do-not-send="true">osm@imagico.de</a>></span>
wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN:
0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class="gmail_quote"><span>On Monday 09 October 2017,
Martin Koppenhoefer wrote:<br>
><br>
> I am not aware that OSM in any way defines what
an “aircraft” is.<br>
><br>
> Why is “aircraft” objective and verifiable, but
“airport” is not?<br>
<br>
</span>Now discussion is drifting into the ridiculous.<br>
<br>
Depending on your perspective it can obviously be
considered inherently<br>
impossible to fully define the meaning of every word of
a language<br>
using just words of this language. The purpose of
verbal definitions<br>
is to create a consistent framework of
interrelationships between the<br>
words that allows you to interpret them in a way that is
consistent<br>
with other users of the language and identify
misinterpretations<br>
because they create inconsistencies.<br>
<br>
You used the term 'airport' in a segregative way, i.e.
to distinguish<br>
between runway-like features on an airport and
runway-like features on<br>
a non-airport. The use of the term 'aircraft' is merely
descriptive.<br>
It does not not aim to distinguish runways from
non-runways (runway<br>
tagging according to the definition for example can be
equally used for<br>
runways for manned and unmanned aircrafts).<br>
<br>
So even if you have no real idea what an aircraft is you
will probably<br>
be able to mostly map runways correctly based on that
definition using<br>
your understanding of the terms 'air' and 'craft'.<br>
<br>
And in general you should as much as possible be able to
decide on tags<br>
based on *local* observations. If the same runway-like
feature needs<br>
to be tagged differently depending on if it is located
within an<br>
airport of not (by whatever definition of airport) that
is not a very<br>
good idea for tagging. A mapper is for example very
likely able to<br>
reliably identify a "strip of land on which aircraft can
take off and<br>
land" from high resolution imagery but specific
classification of the<br>
area this strip is located in can be much less reliable.<br>
<span class="m_-3849479211850525536im
m_-3849479211850525536HOEnZb"><br>
--<br>
Christoph Hormann<br>
<a href="http://www.imagico.de/" rel="noreferrer"
target="_blank" moz-do-not-send="true">http://www.imagico.de/</a><br>
<br>
</span>
<div class="m_-3849479211850525536HOEnZb">
<div class="m_-3849479211850525536h5">______________________________<wbr>_________________<br>
Tagging mailing list<br>
<a href="mailto:Tagging@openstreetmap.org"
target="_blank" moz-do-not-send="true">Tagging@openstreetmap.org</a><br>
<a
href="https://lists.openstreetmap.org/listinfo/tagging"
rel="noreferrer" target="_blank"
moz-do-not-send="true">https://lists.openstreetmap.or<wbr>g/listinfo/tagging</a><br>
</div>
</div>
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<br>
<br clear="all">
<div><br>
</div>
-- <br>
<div class="m_-3849479211850525536gmail_signature"
data-smartmail="gmail_signature">
<div dir="ltr">Dave Swarthout<br>
Homer, Alaska<br>
Chiang Mai, Thailand<br>
Travel Blog at <a href="http://dswarthout.blogspot.com"
target="_blank" moz-do-not-send="true">http://dswarthout.blogspot.com</a></div>
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