Tris Search Engine ((exclusive)) Jun 2026

: Results include technical reports from federal and state agencies, journal articles, and conference proceedings.

: Through its integration into TRID, it combines US-based research with the OECD’s International Transport Research Documentation (ITRD). Key Features for Researchers tris search engine

TRIS is the world's largest and most comprehensive bibliographic database of transportation research. Maintained by the Transportation Research Board (TRB), it serves as a "who's who" and "what's what" of the industry. Whether you are a civil engineer looking for pavement durability studies or a policymaker researching public transit efficiency, TRIS is the primary gateway. Why Specialized Search Matters : Results include technical reports from federal and

: Users can drill down by specific transportation modes (air, rail, highway) or document types. Maintained by the Transportation Research Board (TRB), it

: Access over 1.5 million records of worldwide transportation research.

: The database is continuously updated, ensuring that "Day One" project designs are backed by the latest industry standards. A Note on Modern Usage

Home - Transport Research International Documentation - TRID