Transportation Research Thesaurus

TRT Home | Hierarchical View | Alphabetical View | Download | About

The Transportation Research Thesaurus (TRT) is an important tool for vocabulary control. The National Transportation Library provides it here both as a tool for searching TRIS Online, the NTL Catalogs and other developing resources, and as a tool for indexers, catalogers and researchers in developing their own resources. TRT is maintained by the TRANSPORTATION RESEARCH BOARD. The NTL keeps this copy up to date using information from the TRB. The date of the latest update is 10/01/2008.

Top Terms

The thesaurus can be navigated in several ways:

If you know the hierarchical scheme, click on the Top Term on the left side of the screen.
To browse the entire hierarchy, click on the Hierarchical View link at the top of the screen.
If you know the first word of the term, click on the Alphabetical View link at the top of the screen.
If you are unsure of the correct term, enter the term in the search box at the top of the screen. See search tips below.

Search Tips:

Use * for multiple character truncation
Ex: financ* finds finance, finances, financing, financed, and financial
Use # for single character truncation
Ex: wom#n retrieves both woman and women
Supports Boolean searching: AND, OR, NOT
Ex: control AND traffic NOT air

TRIS is a bibliographic database funded by sponsors of the Transportation Research Board (TRB), primarily the state departments of transportation and selected federal transportation agencies. TRIS Online is hosted by the National Transportation Library under a cooperative agreement between the Bureau of Transportation Statistics and TRB.