An important function of the Transportation Research Board (TRB) is to stimulate research that addresses concerns, issues, or problems facing the transportation community. In support of this function, TRB Technical Activities standing committees identify, develop, and disseminate research need statements (RNS) for use by practitioners, researchers, and others. The RNS on this website have been developed by the technical committees.


  • To retrieve a record or records in the database, enter a word or phrase in the "Search Term" box.
  • For a wild-card search, use an asterisk (*) after a partial word.
  • For a boolean search, use OR, AND, or AND NOT between words or phrases.
  • For the committee field, click "Lookup" to search based on your entered text.

For questions about statements in the RNS database or how to access the RNS database contact:

James W. Bryant
Senior Program Officer
Transportation Research Board
Phone: (202) 334-2087

For general questions or comments about the RNS database contact:

Bill McLeod
TRIS Manager
Transportation Research Board