TRIS

The Transportation Research Information Services (TRIS) Database is the world's largest and most comprehensive bibliographic resource for transportation research information.                     

We offer you the ability to search it for free, reliable data and documents:

TRIS is produced and maintained by the Transportation Research Board (TRB) at the National Academy of Sciences with sponsorship by State Departments of Transportation, the various administrations at the U.S. Department of Transportation, and other sponsors of TRB's core technical activities.

The database contains about 700,000 records of published research, 45,000 of which are full-text documents.  These resources cover all modes and disciplines of transportation.  Efforts have been made to increase coverage on the various transportation modes and in the areas of planning, environment, and human factors.

Since 2000, most of the TRIS database has been available free on the Web as "TRIS Online" via the Bureau of Transportation Statistics' National Transportation Library website.

The Research in Progress (RIP) records found in TRIS are available as a separate searchable database.  It has expanded to include international research projects and university research.

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