[OSM-talk] Obscure African dirt tracks in Google Maps - how does Google records them ? Automated tracing ?

[Mike N]

On 10/16/2012 7:34 AM, Jean-Marc Liotier wrote:
> Maybe they just have an army of tracers, but automation seems more like
> how Google solves problems.

  Is there any Smartphone coverage for those areas?  Google can track 
via their Smartphone apps.  By generating tracks from the owner's 
movements, a road can be inferred.   A consistent set of movements on a 
track at 20-40 kph would indicate a dirt road.