Good tracing is quite helpful in the final definition of a way, Bad tracing is really bad - it takes a multiple of the original effort to correct it.
Ok - having resolved that, I believe that the difference between good mapping and bad mapping will be absolutely correlated to the number of "one way" errors and "turn restriction" errors. In order to say that a route from Street A to Street B is possible you must have actually done it yourself. It's not good enough to have just passed along a nearby cross street, to snaffle the street sign name. For entitys that need to be routable, you *must* actually travel that route to verify it's correctness. PS - you can't read a "No Right Turn" sign from a satellite and you're not allowed to use Google Steet Views.
_______________________________________________ Talk-au mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-au
