Real world company prefixes
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UA UB UC UD UE UF UG UH UI UJ UK UL UM UN UO UP UQ UR US UT UU UV UW UX UY UZ
UTA UTB UTC UTD UTE UTF UTG UTH UTI UTK UTL UTM UTN UTO UTP UTQ UTR UTS UTT UTU UTV UTW UTX UTY UTZ
UA UB UC UD UE UF UG UH UI UJ UK UL UM UN UO UP UQ UR US UT UU UV UW UX UY UZ
UTA UTB UTC UTD UTE UTF UTG UTH UTI UTK UTL UTM UTN UTO UTP UTQ UTR UTS UTT UTU UTV UTW UTX UTY UTZ
| 1 | UT | Union Terminal Ry. Co. | 1/52-4/70 | NRHS | |
| 2 | UT | MISSOURI PACIFIC SYSTEM [UNION TERMINAL RY (ST. JOSEPH, MO)] | PWRC | ||
| 3 | UT | Union Terminal Ry. of St. Joseph, MO | 1/1941-1/1950 | NAKINA | |
| 4 | UT | Union Terminal Ry. Co. | 1/1952-4/1970 | NAKINA | |
| 5 | UT | Union Terminal Ry. Co. (of St. Joseph, MO) | 1/1975 | NAKINA | |
| 6 | UT | Missouri Pacific System | eliminated 1/1979 | NAKINA | |
| 7 | UT | Union Terminal Ry. Co. (of St. Joseph, MO) | Jan-75 | NRHS | |
| 8 | UT | Missouri Pacific System | eliminated 1/79 | NRHS | |
| 9 | UTA | UTair Aviation | IATA: UT | ICAO1 | |
| 10 | UTAA | UNDERDOG TRUCKING LLC | SCAC4 | ||
| 11 | UTAH | Utah Ry. Co. | 10/57-7/2000 | NRHS | |
| 12 | UTAH | UTAH RAILWAY COMPANY | PWRC | ||
| 13 | UTAH | Utah Ry. Co. | 10/1957-7/2005 | NAKINA | |
| 14 | UTAH | Utah Railway | RSRV | ||
| 15 | UTAI | UTAH TRAILWAYS | SCAC4 | ||
| 16 | UTAR | UNINATIONS CORPORATION | SCAC4 | ||
| 17 | UTAW | U W FREIGHT LINE, INC | SCAC1 | ||
| 18 | UTAX | United Transportation, Inc. | 1/75-1/80 | NRHS | |
| 19 | UTAX | *UNITED TRANSPORTATION, INC. | PWRC | ||
| 20 | UTAX | *UTAH TRANSIT AUTHORITY | PWRC | ||
| 21 | UTAX | United Transportation, Inc. | added 7/1972; 1/1975-1/1980; eliminated 7/1985 | NAKINA | |
| 22 | UTAX | United Transportation (Utah Transit Authority) | RSRV | ||
| 23 | UTBI | USA TRUCK | SCAC4 | ||
| 24 | UTBT | UNITY TRUCKING BOAT TRANSPORTATION | SCAC4 | ||
| 25 | UTBX | Union Tank Car Co. | 1/75; added 4/75; 1/80-1/94 | NRHS | |
| 26 | UTBX | (UTCX) UNION TANK CAR CO. | PWRC | ||
| 27 | UTBX | Union Tank Car Co. | 1/1975; added 4/1975; 1/1980-1/1994 | NAKINA | |
| 28 | UTBX | Union Tank Car | RSRV | ||
| 29 | UTCB | UTE CAB CO | SCAC4 | ||
| 30 | UTCC | UTC | SCAC4 | ||
| 31 | UTCI | UNITED TRANSPORT INC | SCAC4 | ||
| 32 | UTCJ | UNIQUE TRANSPORT CORPORATION | SCAC4 | ||
| 33 | UTCK | UNITED TRUCKING | SCAC4 | ||
| 34 | UTCL | UNICO TRANS CORP | SCAC4 | ||
| 35 | UTCM | UNITED TRUCKING CORP | SCAC4 | ||
| 36 | UTCO | Union Traction Co. | Apr-38 | NRHS | |
| 37 | UTCO | UNION TRACTION CO. | PWRC | ||
| 38 | UTCO | Union Traction Co. | 7/1923-1/1941 | NAKINA | |
| 39 | UTCO | UNDERGROUND TECHNOLOGIES INC | SCAC4 | ||
| 40 | UTCP | UTC PROJECTS INC | SCAC4 | ||
| 41 | UTCQ | UNITED TRANSIT COMPANY | SCAC1 | ||
| 42 | UTCQ | UNITED TRANSIT CO | SCAC4 | ||
| 43 | UTCR | UNITED TRANS CO OF R I | PWRC | ||
| 44 | UTCR | UNIWORLD TRUCKING CO | SCAC4 | ||
| 45 | UTCU | STOLT TANK CONTAINERS INC. | PWRC | ||
| 46 | UTCU | Stolt Tank Containers | RSRV | ||
| 47 | UTCU | STOLT TANK CONTAINERS INC | SCAC4 | ||
| 48 | UTCV | U T C OVERSEAS INC | SCAC4 | ||
| 49 | UTCX | Union Tank Car Co. | 4/38-7/2000 | NRHS | |
| 50 | UTCX | UNION TANK CAR CO | PWRC | ||
| 51 | UTCX | Union Tank Car Co. | 7/1930-7/2005 | NAKINA | |
| 52 | UTCX | Union Tank Car | RSRV | ||
| 53 | UTD | UNION TERMINAL CO. (DALLAS, TX) | PWRC | ||
| 54 | UTDC | TRI-COUNTY COMMUTER RAIL AUTHORITY {UTDC TRANSIT SERVICES, INC.} | PWRC | ||
| 55 | UTEL | UTL TRANSPORTATION SERVICES (DIVISI | SCAC4 | ||
| 56 | UTEP | UTAH EXPRESS LLC | SCAC4 | ||
| 57 | UTEU | Unienergy Technologies | RSRV | ||
| 58 | UTEX | Przedsiębiorstwo Produkcyjno-Handlowe UTEX Sp. z o.o. | PL | VKM | |
| 59 | UTFS | UNION TRANSFER & STORAGE | SCAC4 | ||
| 60 | UTFW | UT FREIGHT FORWARDER CO LTD | SCAC4 | ||
| 61 | UTG | UTAGE | ICAO1 | ||
| 62 | UTGD | ULTIMATE TRUCK GEAR LTD | SCAC4 | ||
| 63 | UTHZ | TRANSAMERICA LEASING INCORPORATED | PWRC | ||
| 64 | UTHZ | TAL International Inc | RSRV | ||
| 65 | UTHZ | TRANSAMERICA LEASING INC | SCAC4 | ||
| 66 | UTI | Uzbekistan Railways - Узбекистон темир йуллари (УТИ) | UZ | VKM | |
| 67 | UTI | UPSTATE TRANSIT OF SARATOGA LLC | SCAC4 | ||
| 68 | UTIB | UNION TRUCKING INC | SCAC4 | ||
| 69 | UTIC | UPDEGRAFF TRANSPORTATION INC | SCAC4 | ||
| 70 | UTID | UTAH-IDAHO FREIGHT SYSTEMS | SCAC1 | ||
| 71 | UTID | UTAH IDAHO FREIGHT SYSTEMS | SCAC4 | ||
| 72 | UTIF | US TRANSPORT INC | SCAC4 | ||
| 73 | UTIG | UNDERWOOD TRUCKING INC | SCAC4 | ||
| 74 | UTIH | UCS TRANSPORT INC | SCAC4 | ||
| 75 | UTIJ | USCS TRANSPORT INC | SCAC4 | ||
| 76 | UTIK | UNLIMITED TRUCKING INC | SCAC4 | ||
| 77 | UTIL | UNI-TRANS ILLINOIS CONSOLIDATED INC | SCAC4 | ||
| 78 | UTIM | UNLIMITED TRANSPORT INC | SCAC4 | ||
| 79 | UTIO | UNLIMITED TRANSPORTS INC | SCAC4 | ||
| 80 | UTIQ | UA TRANSPORT INC | SCAC4 | ||
| 81 | UTIR | UNITRANS INTERNATIONAL INC | SCAC4 | ||
| 82 | UTIU | UZBEKISTON TEMIR JOLLARI | SCAC4 | ||
| 83 | UTIV | URIE TRUCKING INC | SCAC4 | ||
| 84 | UTIW | UTI | SCAC4 | ||
| 85 | UTK | Unitranscom | BG | VKM | |
| 86 | UTKI | URIEL TRUCKING INC | SCAC4 | ||
| 87 | UTKL | UTAH TRUCK LINES LLC | SCAC4 | ||
| 88 | UTKU | Unitek Solvent Services | RSRV | ||
| 89 | UTKU | UNITEKSOLVENT SERVICES INC | SCAC4 | ||
| 90 | UTL | Umwelt+Transportlogistik AG | CH | VKM | |
| 91 | UTL | Umwelt-Transport-Logistik GmbH | Konstanz | D | privat-bahn.de |
| 92 | UTLC | UNITED TRADE LOGISTIC INC | SCAC4 | ||
| 93 | UTLD | ULTIMA TRANSPORT LLC | SCAC4 | ||
| 94 | UTLH | UNDERWOOD TRUCKING LLC | SCAC4 | ||
| 95 | UTLJ | ULTIMATE TRANSPORT LLC | SCAC4 | ||
| 96 | UTLK | UTL INTERNATIONAL INC | SCAC4 | ||
| 97 | UTLL | UNITED TRANS LOGISTICS INC | SCAC4 | ||
| 98 | UTLM | ULTIMATE TRANSPORTATION LLC | SCAC4 | ||
| 99 | UTLT | UTL TRANSPORTATION SERVICES (DIVISI | SCAC4 | ||
| 100 | UTLU | Universal Truckload Services | RSRV |