Access TRID on TRB’s website
In 2011, TRB and ITRD released TRID, the TRIS and ITRD Database. TRID is the world's largest and most comprehensive bibliographic resource on transportation research information. It is produced and maintained by the Transportation Research Board of the US National Academies 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. ITRD is produced by ITRD member organizations under the under the sponsorship of Joint Transport Research Centre (collectively JTRC) of the International Transport Forum and Organisation for Economic Cooperation and Development (OECD) and ITRD.
TRID covers all modes and disciplines of transportation and contains more than 1,002,000 records of published research. More than 90,000 records contain links to full-text documents.
Records in TRID are indexed with a standardized vocabulary from the Transportation Research Thesaurus (TRT), ITRD Thesaurus or a different thesaurus depending on the source organization.
Researchers can submit a published transportation report or document online for indexing in TRID or email it to email@example.com.
View a presentation on how to use TRID datatabase.
The TRID Database contains more than one million records of references to books, technical reports, conference proceedings, and journal articles in the field of transportation research. Almost 500 serial titles are regularly scanned and indexed for TRID.
TRID's focus is transportation research. TRID does not contain information on vehicle standards and specifications, patent information, market research, or military transport.
In addition to the material that is indexed and abstracted at the Transportation Research Board and from ITRD, TRID receives records from several sources:
TLIB Records are bibliographic records received from major transportation libraries. These citations generally do not have abstracts but they cover journals and publications that would not otherwise be covered in TRID. The Harmer E. Davis Library at the Institute of Transportation Studies at the University of California, Berkeley provides monthly updates of journal articles and technical reports. The Northwestern University Transportation Library provides monthly contributions of selections from its TRANWeb database (a database of journal articles and papers on transportation and law enforcement).
The Australian Transport Index (ATRI) is a database of more than 140,000 records providing information on Australian and New Zealand land transport publications in the context of relevant international work. Selected by information professionals within ARRB Group’s Library over more than four decades, and financed by the National Interest Services (NIS) program, this resource is regularly used in Australasian state and federal government departments, private sector consultancies, and academic institutions to support land transport research and decision making.
More than 20,000 Environmental Impact Statements from the EIS Database produced by the Northwestern University Transportation Library
have been added to the TRIS Database to date. TRID now contains
records for the largest collection of Environmental Impact Statements in
Since 2007, the Northwestern University Transportation Library has contributed transportation-related theses to the TRID database. To date, over 4,800 records have been contributed. The Northwestern University Transportation Library adds new thesis records to TRID annually.
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