[mkgmap-dev] Runways on highways

Mon Jun 7 07:36:05 BST 2010

On Sun, Jun 06, 2010 at 10:45:36PM +0100, Dave F. wrote:
>Wouldn't it be better to amend the tagging in OSM to accurately 
>describe what is actually on the ground? - road the majority of the 
>time, runway, the minority.
>
>I maybe wrong, but it appears your using mkgmap to paper over the 
>cracks in OSM.

What tagging would you propose then? I think that highway=* and 
aeroway=* on the same way describes exactly this situation. Not all 
straight road sections can be used as runways. I would not remove the 
aeroway=* even though it might be used as such once in a year or so (and 
closed from general traffic).

The aeroway=* could be useful for an OpenAviationMap that would display 
airfields from a much greater distance than highways.

	Marko

>
>Cheers
>Dave F.
>
>Marko Mäkelä wrote:
>> Someone notified me that this highway that serves as a temporary runway
>> during military exercises is not being considered for routing:
>>
>> http://www.openstreetmap.org/browse/way/45772320
>>
>> aeroway = runway
>> highway = primary
>> name = Turuntie
>> ref = 41
>>
>> The obvious reason is that in styles/default/lines, aeroway=runway comes
>> before any highway=* tags. I confirmed the non-routeability on my Edge
>> 705, and my fix sort of worked:
>>
>> Index: resources/styles/default/lines
>> ===================================================================
>> --- resources/styles/default/lines	(revision 1652)
>> +++ resources/styles/default/lines	(working copy)
>> @@ -8,8 +8,8 @@
>>   # and http://wiki.openstreetmap.org/wiki/Mkgmap/help/Custom_styles
>>   # for more information.
>>
>> -aeroway=runway [0x27 resolution 20]
>> -aeroway=taxiway [0x27 resolution 24]
>> +aeroway=runway [0x27 resolution 20 continue]
>> +aeroway=taxiway [0x27 resolution 24 continue]
>>
>>   # Contours take their name from the elevation setting.
>>   contour=elevation & contour_ext=elevation_minor
>>
>> I would have preferred to see the runway on top of the highway, but the
>> Edge 705 rendered only the highway. In other words, the Garmin line for
>> the aeroway=runway object is just wasting memory. QLandkarteGT showed
>> both lines on top of each other.
>>
>> I think that we should just move the aeroway=* rules below highway=* so
>> that any highways that serve as temporary airfields will be translated
>> as highways. Any objections to that? Are there any aeroway=* that are
>> also tagged as highway=service, for example? Should they require some
>> special treatment?
>>
>> 	Marko
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>>
>>
>>
>
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