However OSM is not only used for routing. It can also be used for printed maps, or as an index to locate a street (eg. search for Portrush Road near Heathpool.) For these purposes yahoo traced data is infinitely more useful than no data.
~Cameron 2009/1/21 Nick Hocking <[email protected]> > 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 > >
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