Apollinaris Schoell wrote: > over all this is a complex topic, maybe I should summarize some > obervations > tiger data is that the quality is from excellent to really bad in > accuracy > tiger data is old and contains abandoned roads > tiger has no level info, no direction for oneways, no turn > restrictions, or any other fancy info which we add in osm
This isn't in itself such a bad thing if we had access to free extremely high res aerial photography of the entire US. And by high-res, I mean, can clearly read pavement markings, see rubber marks and which way cars on the street are facing. This wasn't something I really noticed as a problem until I moved to Salem: Yahoo!'s aerial photography for Portland is sourced from Metro Regional Government's public photography, and is *extremely* high resolution, but south of roughly Wilsonville/Donald/Aurora/Fargo area, the best you're getting is relatively low-resolution and almost uselessly old USGS photography.
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