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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

Pmr: Highway facilities
Pmru: Highway facilities for motorized users
Click to expand Pmrub: Bus and high occupancy vehicle facilities
 Pmruj: Inspection stations
Click to expand Pmrup: Parking facilities
 Pmruq: Roadside rest areas
 Pmrur: Service stations
Click to expand Pmrus: Toll facilities
 Pmrut: Traffic control centers
Click to expand Pmruu: Truck facilities
 Pmruv: Turnouts

Find documents having Highway facilities for motorized users

Broader Term:
Pmr: Highway facilities
 
Related Terms:
Pmrc: Roads
Pmrt: Highway facilities for nonmotorized users
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