The Transportation Research Information Services online (Tris online) is a bibliographic database

Bibliographic database

A bibliographic database is a database of bibliographic records, an organized digital collection of references to published literature, including journal and newspaper articles, conference proceedings, reports, government and legal publications, patents, books, etc...

 funded by sponsors of the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 Transportation Research Board

Transportation Research Board

The Transportation Research Board is a division of the National Research Council, which serves as an independent adviser to the President, the Congress and federal agencies on scientific and technical questions of national importance...

 (TRB), primarily the USA state departments of transportation and selected US federal transportation agencies. TRIS Online is hosted by the National Transportation Library

National Transportation Library

The National Transportation Library maintains and facilitates access to information necessary for transportation decision-making in government and coordinates with public and private transportation libraries and information providers to improve information sharing among the transportation community...

 under a cooperative agreement between the Bureau of Transportation Statistics

Bureau of Transportation Statistics

The Bureau of Transportation Statistics , as part of the United States Department of Transportation, compiles, analyzes, and makes accessible information on the nation's transportation systems; collects information on intermodal transportation and other areas as needed; and improves the quality and...

and TRB. TRIS provides access to over 400,000 bibliographic records covering transportation research published in books, journal articles, technical reports and the media.

Update January 2011

The TRIS Database returned to TRB in 2010; in 2011 the TRIS Database was integrated with the ITRD Database. More information about the integrated database and access to it is available on the TRB website at trid.trb.org