Canadian Surface Transportation Research - Transportation Association of Canada (TAC):  This database contains summaries of over 2,000 research projects from more than 120 Canadian transportation research organizations, including Transport Canada, the National Research Council, each of the provincial and territorial transportation agencies, universities, associations, municipalities, private firms and other research agencies.

International Transport Research Documentation (ITRD)Database:  The ITRD is a multi-lingual database that delivers high quality information on global developments in transport and transport research direct to your computer screen.

Midwest Regional University Transportation Center - Maintenance Quality Assurance (MQA) Document Library:   Contains a wide range of MQA documents for various U.S. State and Canadian Provincial transportation agencies.

TRB On-Line Publications Index:  Contains access to numerous on-line version sof TRB publications such as TRR, NCHRP, TRB Circulars, SHRP, and many others.

TRB Research In Progress (RiP) Database:  The RiP Database features a data-entry system to allow users in State DOTs to add, modify and delete information on their current research projects. The RiP database now contains over 10,400 current or recently completed transportation research projects. Most of the RiP records are projects funded by Federal and State DOTs. University transportation research is also included.

TRB Research Needs Database:  The Research Needs Statements in this database have been developed by the various TRB technical committees.

TRIS On-Line - National Transportation Library: The TRIS Online database contains over half a million records of published transportation research including technical reports, books, conference proceedings and journal articles.