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Newest Terms

Disaster resilience (Hhgds)
Catchment areas (Epdutc)
Traffic analysis zones (Epdutz)
Limit state design (Esdn)
Complete streets (Epdumcc)
Load and resistance factor design (Esdp)
Geopolymer concrete (Rbmdhcmpg)
Underride guards (Qpbcu)
Collision insurance (Cnc)
Frontal crashes (Hbbgtf)

The Transportation Research Thesaurus (TRT) is a tool to improve the indexing and retrieval of transportation information. The thesaurus covers all modes and aspects of transportation. The TRT's purpose is to provide a common and consistent language between producers and users of transportation information.

The TRT Web page allows for searching and browsing the thesaurus in various formats. Click on a thesaurus term to retrieve the "family" relationships (broader, narrower, and related terms). Click on the terms alpha code to retrieve the hierarchical display for the word.