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Submit a resource for the NTL Digital Repository. Please note that the Transportation Research Information Service (TRIS)
database is now TRID, the TRIS and ITRD database, and available at
   Search Tips
Search TRID, the TRIS and ITRD database, for U.S. and international material.
Search the database for federal science and technology resources.
Search Data.Gov for transportation datasets.
Search the TRB Research in Progress (RIP) Database for current research projects.
Search the TLCat - Transportation Libraries Catalog for transportation-related books and other materials held in government, university and other transportation libraries.
Search the National Technical Information Service Database for government-funded documents published since 1990.