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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> Facilities > Transportation, hydraulic and utility facilities > Highway facilities > Highway facilities for motorized users > Service stations

Pmru: Highway facilities for motorized users
Pmrur: Service stations

Find documents having Service stations

Cross Reference:
Pmruus: Truck stops
 
Broader Term:
Pmru: Highway facilities for motorized users
 
Related Terms:
Pmrub: Bus and high occupancy vehicle facilities
Pmruj: Inspection stations
Pmrup: Parking facilities
Pmruq: Roadside rest areas
Pmrus: Toll facilities
Pmrut: Traffic control centers
Pmruu: Truck facilities
Pmruv: Turnouts
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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