On 11/28/06, Richard Franks <[EMAIL PROTECTED]> wrote:
however for all the towns and cities I've lived in, the actual street layouts and names don't change terribly often.
Let me qualify this rather anecdotal statement.. I don't think street-layout/renumberings change often enough to be show-stopper problem for a project like OpenStreetmap. If you work a lot with streetmap data, then you probably deal with renumbering/layout changes on a daily basis. But what percentage of roads require such changes per year? What percentage of the total streetmap mileage is affected? Does this occur more frequently in urban, suburban, or rural areas? I think you'd need to take account of at least these variables to determine the extent of the problem, and the ease of the fix. I'm also thinking in terms of highway maintainance -- if one section is under maintainance, and traffic from both directions are forced to share one side of the highway.. then temporary traffic information could be mined quite easily if the highway is wide enough to draw conclusions from the offset in expected GPS vectors. Likewise for accidents, or temporarily blocked roads. All it requires is a few more programmable GPS devices on the roads who share data, and you have the basis for an automonous dynamic nagivation system, which has the potential to report back issues rather quickly. Richard _______________________________________________ OpenMoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/cgi-bin/mailman/listinfo/community
