[Tagging] Aeroway=Aerodrome Modifier Tags?

[Liz]

On Tue, 15 Jun 2010, John Smith wrote:
> I think we would be better classifying things based on approximate air
> traffic per day, the number of run ways, and so no, alternatively we
> could just tag these things individually:
> 
> air_traffic=1000
> runways=10
as i recall, Cloncurry actually has 7 runways, a legacy of being a major WW2 
base.
not sure how i obtain figures on air traffic movements