[Tagging] airstrip vs runway

[Warin]

On 10-Oct-17 02:24 AM, Janko Mihelić wrote:
> I'm in favor of airstrips, but I would make airstrip a subcategory of 
> runway. So tagging an airstrip as runway is not wrong if you don't 
> know any better.
>
> Anyway, is there a way to know if a runway is an airstrip from aerial 
> photos? Is grass surface enough to make something an airstrip? Does 
> this depend on the country/region? What if a grassy runway has a big 
> light that helps landing, is it a runway then? What if there is a very 
> small fee to land there. What's the line between them?
>
> Janko

If the surface is the deciding factor from 'airstrip' to 'runway' then 
simply use the 'surface=*' tag rather than have a new tag that has the 
only difference being the surface.
Fee? there is a tag for that too .. fee=*, you could also have a 
maxweight= tag too .. but these things are all property tags - they 
should not cause a new aeroway tag.