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Railroad commuter service (Aetrc)

Transportation (A)
     Use For: Transport; Transportation industry
    Transportation modes (Ae)
         Use For: Modes
         Related Term (Associative): 
        Public transit (Aet)
             Use For: Local transit; Mass transit; Transit
             Related Term (Associative): Rural transit (Afma); Urban transit (Afna)
            Rail transit (Aetr)
                Railroad commuter service (Aetrc)
                     Use For: Commuter rail
                Rapid transit (Aetrd)
                     Use For: Heavy rail transit
                     Related Term (Associative): 
                Light rail transit (Aetrh)