There are some odd cases where even GPS averaging is not accurate enough to 'micro adjust' a way by 1-3 meters. One of which is where the sensor is inside a vehicle (not rooftop mounted) on some curves. I observe this by comparing multiple traces from multiple units and the fact that they do not converge on a very good aerial image - even though the entry and exit traces match very well.
From: d f Sent: Tuesday, September 08, 2009 11:08 AM Cc: [email protected] Subject: Re: [OSM-talk] source=(survey, yahoo, gps...) > ...without the right information being presented to later users. Not sure what you men by that. However... If there are 10 traces by GPS for a way & I think it's out of alignment from the average of them, then I would move it. Irrelevant of what the source tag for the way.
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