[mkgmap-dev] Runways on highways

Tue Jun 8 22:57:58 BST 2010

Marko Mäkelä wrote:
> On Tue, Jun 08, 2010 at 01:50:24PM +0100, Dave F. wrote:
>   
>>> What tagging would you propose then?
>>>       
>> At the moment it's tagged as being both a highway & a runway at the 
>> same time!
>>
>> Seeing you mention temporary, how about that?
>>     
>
> I don't know. Ice roads 
If you mean roads with ice on them then, well... all roads get icy.

> and lift bridges are temporary too.
If you mean bridges that raise up to allow traffic to go underneath then 
no, it's not - it's always a lift bridge.

>   Would you 
> suggest something like temporary_aeroway=runway? I would not like to 
> introduce new tags.
Why not? If there's nothing being used to describe it accurately then 
create it & document it.
>  temporary=aeroway perhaps (in conjunction with 
> aeroway=* and highway=*)
>
>   
>> Within OSM it needs to say when it's one or the other.
>>     
>
> It could be both:
>   

At the same time?!?

> Index: resources/styles/default/lines
> ===================================================================
> --- resources/styles/default/lines	(revision 1652)
> +++ resources/styles/default/lines	(working copy)
> @@ -8,6 +8,8 @@
>   # and http://wiki.openstreetmap.org/wiki/Mkgmap/help/Custom_styles
>   # for more information.
>   
> +aeroway=runway & highway=* [0x27 resolution 20 continue]
> +aeroway=taxiway & highway=* [0x27 resolution 24 continue]
>   aeroway=runway [0x27 resolution 20]
>   aeroway=taxiway [0x27 resolution 24]
>
> This would duplicate the aeroway objects only if they are also tagged as 
> highways. aeroway=*, waterway=river would not be duplicated :-)
>   

OK, for now let's disregard the editing of mkgmap.

Have you heard of Garbage In, Garbage Out? If the tags put into in OSM 
are inaccurate then the info going into any program, including mkgmap, 
is going to be garbage.

The best I can think of at the moment is to tag is as a highway, which 
is what most people will regard it as, but with barriers at the relevant 
points that have access=* tags & any timings that are available.

Regards
Dave F.