eRideShare - Ride sharing and carpool board for the U.S. and Canada. Travel and commuting databases arranged by state, province, and city.
North American Transportation Atlas Data (NORTAD) - Published by the US Bureau of Transportation Statistics. Provides geospatial databases of airports, highways, railroads and political boundaries.
Omnitrax - Information on the largest, privately held, rail services company in North America. Offers employment opportunities and contacts, a corporate overview and details of services to clients in industrial and transportation sectors.