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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> Vehicles and equipment > Vehicles > Railroad trains > Train components > Locomotives > Locomotives by motive power > Diesel hydraulic locomotives

Qbfmcp: Locomotives by motive power
Qbfmcph: Diesel hydraulic locomotives

Find documents having Diesel hydraulic locomotives

Scope Note:
A locomotive powered by a diesel engine that drives a hydraulic transmission system
 
Broader Term:
Qbfmcp: Locomotives by motive power
 
Related Terms:
Qbfmcpd: Diesel locomotives
Qbfmcpe: Diesel electric locomotives
Qbfmcpk: Electric locomotives
Qbfmcpp: Gas turbine locomotives
Qbfmcpq: Dual powered locomotives
Qbfmcps: Steam locomotives
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