I am hoping that there is a single source for this data, ie. 1 geodatabase. If not, can someone point me towards the sources that would make up the entire world's road transportation network?
I have come across references to the ESRI Digital Chart of the World, but I can't find any place to download it.
Ideas?
Answer
Digital Chart of the World is quite old now:
The correct location is 'http://ortelius.maproom.psu.edu/dcw/' (but unavailable currently)
Other locations are available but not in e00 or shapefile http://statisk.umb.no/ikf/gis/dcw/#DCW
But you might be better getting the Open Street Map data for Roads. But will be large amounts of data for the world.
"This is almost 20 GB compressed or 150 GB uncompressed XML."
http://wiki.openstreetmap.org/wiki/Downloading_data#All_data_at_once
For Shapefiles you best bet is http://download.geofabrik.de/osm/
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