[Tagging] airstrip vs runway
Warin
61sundowner at gmail.com
Tue Oct 17 04:55:26 UTC 2017
These 'airstrips' are popular in Australia and Papua New Guinea too.
To me they are runways - they are there for planes to land and take off,
any 'services' might also be tagged.
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.
Most of them are mapped as simple single nodes.
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.
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.
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.
I don't add any aerodrome tags to them.
-----------------------
Slightly off topic - youtube video
Landing at Ononge Papua New Guinea. Note the approach over the village,
clearly showing;
why there are no 'residential' roads and why there are so many showing
up in the tool for 'missmapped villages'.
why they are not aerodromes
and why you want a good pilot in Papua New Guinea!
https://www.youtube.com/watch?v=DItuay4Zaws
On 10-Oct-17 03:06 AM, J.J.Iglesias wrote:
> Likewise happen in hundreds of airstrips in Latin America, that are
> out of the ICAO definition of Airport and more into the Airstrip.
> 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...
>
> ----- Original Message -----
> *From:* Dave Swarthout <mailto:daveswarthout at gmail.com>
> *To:* Tag discussion, strategy and related tools
> <mailto:tagging at openstreetmap.org>
> *Sent:* Monday, October 09, 2017 9:35 AM
> *Subject:* Re: [Tagging] airstrip vs runway
>
> 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
> "ourairports.com <http://ourairports.com>", have added hundreds
> (thousands?) of them to OSM as though they were actual airports.
>
> 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.
>
> 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.
>
> I think therefore that there is a definite need to tag such
> landing strips differently.
>
> AlaskaDave
>
>
>
> On Mon, Oct 9, 2017 at 7:47 PM, Christoph Hormann <osm at imagico.de
> <mailto:osm at imagico.de>> wrote:
>
> On Monday 09 October 2017, Martin Koppenhoefer wrote:
> >
> > I am not aware that OSM in any way defines what an
> “aircraft” is.
> >
> > Why is “aircraft” objective and verifiable, but “airport” is
> not?
>
> Now discussion is drifting into the ridiculous.
>
> Depending on your perspective it can obviously be considered
> inherently
> impossible to fully define the meaning of every word of a language
> using just words of this language. The purpose of verbal
> definitions
> is to create a consistent framework of interrelationships
> between the
> words that allows you to interpret them in a way that is
> consistent
> with other users of the language and identify misinterpretations
> because they create inconsistencies.
>
> You used the term 'airport' in a segregative way, i.e. to
> distinguish
> between runway-like features on an airport and runway-like
> features on
> a non-airport. The use of the term 'aircraft' is merely
> descriptive.
> It does not not aim to distinguish runways from non-runways
> (runway
> tagging according to the definition for example can be equally
> used for
> runways for manned and unmanned aircrafts).
>
> So even if you have no real idea what an aircraft is you will
> probably
> be able to mostly map runways correctly based on that
> definition using
> your understanding of the terms 'air' and 'craft'.
>
> And in general you should as much as possible be able to
> decide on tags
> based on *local* observations. If the same runway-like
> feature needs
> to be tagged differently depending on if it is located within an
> airport of not (by whatever definition of airport) that is not
> a very
> good idea for tagging. A mapper is for example very likely
> able to
> reliably identify a "strip of land on which aircraft can take
> off and
> land" from high resolution imagery but specific classification
> of the
> area this strip is located in can be much less reliable.
>
> --
> Christoph Hormann
> http://www.imagico.de/
>
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>
>
>
> --
> Dave Swarthout
> Homer, Alaska
> Chiang Mai, Thailand
> Travel Blog at http://dswarthout.blogspot.com
>
>
> ------------------------------------------------------------------------
>
>
>
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