Liste des sigles de l'AAR débutant par U

Pour un article plus général, voir Sigle de l'AAR.

U

  • UBTX - Union Camp Corporation
  • UCCX - Union Carbide Canada, Ltd.
  • UCEX - Union Electric Company
  • UCFX - Union Carbide Corporation
  • UCLX - Vulcan Minerals Company
  • UCOX - Union Carbide Corporation
  • UCPX - Essem Corporation
  • UCR - Utah Coal Route
  • UELX - United Equipment Leasing Associates; Archer Daniels Midland
  • UFIX - Utility Fuels, Inc.
  • UIWX - Riley Stoker Corporation
  • UMP - Upper Merion and Plymouth Railroad
  • UMPX - Upper Merion and Plymouth Leasing Company
  • UNI - Unity Railways
  • UNCX - Union Carbide Canada, Ltd.
  • UNPX - PROCOR
  • UNSX - Unitrain Services
  • UO - Union Railroad (Oregon)
  • UOCX - General American Transportation Corporation
  • UP - Union Pacific Railroad
  • UPAX - United Power Association
  • UPFE - Pacific Fruit Express; Union Pacific Railroad
  • UPM - Union Pacific Railroad (Milwaukee Road directed operations)
  • UPOZ - United Parcel Service
  • UPP - Union Pacific Railroad
  • UPRX - Union Pacific Fruit Express Company
  • UPSZ - United Parcel Service
  • UPWZ - United Parcel Service
  • UPY - Union Pacific Railroad
  • URDX - United States Steel
  • URR - Union Railroad (Pittsburgh, Pennsylvania)
  • URHX - United Railway Historical Societies of New Jersey
  • URTX - General American Transportation Corporation
  • URY - Union Railway of Memphis
  • USAX - Département de la Défense des États-Unis
  • USBX - GE Rail Services
  • USCX - William G. Simon
  • USEX - Evans Railcar Leasing Company
  • USGX - Union Sugar Company
  • USIX - US Industrial Chemicals Company
  • USLF - Burlington Northern Railroad
  • USLX - Evans Railcar Leasing Company; GE Capital Railcar Services
  • USNX - Département de la Défense des États-Unis
  • USPX - US Plastics Corporation
  • USRX - U.S. Railways, Inc.
  • USSX - United States Steel
  • UTAH - Utah Railway
  • UTAX - United Transportation, Inc.
  • UTBX - Union Tank Car Company
  • UTCX - Union Tank Car Company
  • UTLX - Union Tank Car Company
  • UTPX - Union Texas Petroleum Corporation
  • UTR - Union Transportation
  • UTTX - Trailer Train Company
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