[HOT] Mapping (also) for the routing

[mbranco]

After the discussion [1] about routing issues inside/around hamlets and
villages, I reviewed my mapping I've done until now in #2768 HOT project
(Nigeria), doing the following:

- if two or more unclassified/track highways reach a village from different
directions and are not connected between, I tried to connect them:

a) if buildings/huts were not too much close one each other: I drew
highway(s) (=residential) inside the village, connecting the external roads

b) if not, but there was at least one track near/around the village linking
the external roads, I mapped it.

c) if none of the above, I drew a "logical" road outside the village tagging
it with highway=road and fixme="confirm (routing issue)" (I think that the
definition of "highway=road" tag [2] is appropriate for this context, but
maybe it could be a problem for rendering and/or routing alghoritms: if so
we could tag them with "highway=track"?). 

The last solution was applied only if:
- without that junction, routing solution should propose (at least) several
chilometers more
- the ground as seen from the aerial images seems reasonably travelled by a
4x4 vehicle
- the lenght of this junction is not so much (almost always less than 100
meters)

I'm very interested in your opinion, my work is easily checkable with this
overpass query [3] which extracts all the highway=road in the selected area:
so, if the community doesn't agree with my solution, it's very fast to
delete or to change tagging for all these specific highways.


[1]
http://gis.19327.n8.nabble.com/landuse-residential-and-routing-problems-tp5900081.html
[2] http://wiki.openstreetmap.org/wiki/Tag:highway%3Droad
[3] 
[out:xml][timeout:25];
(way["highway"="road"](11.867,14.412,12.212,14.766););
out meta;>;out meta qt;



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