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Transportation Research Thesaurus

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Each term in the TRT is assigned a unique notational code that conveys its location within the hierarchy. The first letter of the notation represents the facet or top term. Using the notational code it is easy to determine the terms relation in the hierarchy. The term's parent (Ae) will have one less letter (from the right end) as the term (Aea). Siblings (Aeg, Aes) will have the same notational code as the term except the last letter will be different. Children (Aeac, Aeah) will have one letter appended to the end of the notational code of the term.

Hierarchical Display

Top Terms> Transportation operations > Travel and shipment characteristics > Travel surveys

Bk: Travel and shipment characteristics
Bks: Travel surveys
Click to expand Bksa: Origin and destination

Find documents having Travel surveys

Broader Term:
Bk: Travel and shipment characteristics
 
Related Terms:
Bkc: Carrier selection
Bkj: Trip length
Bkm: Mode choice
Bkn: Travel time
Bkq: Access
Bkr: Route choice
Bkv: Vehicle occupancy
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.
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