[OSM-talk] highway=unsurfaced

[Frederik Ramm]

Hi,

>> trackgrade=gradeX
>
> From what I can gather, this makes sense in a very few  
> circumstances but
> is not so useful for general mapping of unsealed roads.  Does anyone
> have data on how many roads have been tagged with trackgrade=?

Not one. I guess this is a mistake and was meant to be "tracktype",  
of which there are 5424 occurrences, with the values being

    1667 grade2
    1663 grade1
     769 grade3
     735 grade5
     576 grade4
       3 tracktype-grade2
       3 grade6
       3 grade5 - None Exsitent now?
       1 tracktype-grade2 but thin
       1 tracktype=grade2
       1 tracktype-grade1 thin
       1 grade7
       1 grade 2

Apart from "tracktype", the following other related keys are in use  
(with count):

     252 grade
       6 track
       4 tracktyp
       2 tracktype_1
       1 track_type
       1 trackttype
       1 tracketype
       1 tarcktype
       1 surface
       1 rtacktype
       1 highwaytype

> I'm (almost) not English and these make perfect sense to me :-p.  This
> wikipedia article is a fine explanation:
>         http://en.wikipedia.org/wiki/Tarmac

So tarmac is not really tarmac in most developed countries, but asphalt?

Bye
Frederik

-- 
Frederik Ramm  ##  eMail frederik at remote.org  ##  N49°00.09' E008°23.33'