ABFZ
| Arkansas Best Freight | 8 |
ALLZ
| Alliance Shippers Incorporated | 12 |
ATSF
| Atchison Topeka & Santa Fe | 3 |
AXXZ
| Agricultural Express of America | 1 |
BOVZ
| BOVZ | 1 |
CE
| CE | 1 |
CF
| Cape Fear Railways Incorporated | 3 |
CT
| City of Columbia d/b/a Columbia Terminal | 4 |
CTLZ
| CTLZ | 1 |
DOCZ
| DOCZ | 1 |
DTTX
| TTX Company - Double Stack Cars | 1 |
E
| E | 1 |
FEDZ
| Federal Express | 1 |
FFE
| FFE | 1 |
FLEZ
| FLEZ | 1 |
IPOL
| IPOL | 1 |
K
| K | 9 |
MARZ
| MARTRAC | 9 |
MEBZ
| MEBZ | 1 |
MECZ
| MECZ | 3 |
MEIZ
| MEIZ | 1 |
MLNZ
| MLNZ | 5 |
MR
| McCloud Railway Company | 2 |
MRTZ
| MRTZ | 2 |
MTLZ
| Marten Truck Lines | 11 |
MTRZ
| MTRZ | 1 |
MUPZ
| MUPZ | 1 |
PCAZ
| PCAZ | 1 |
PRIZ
| PRIZ | 5 |
ROCO
| ROCO | 1 |
TEMZ
| TEMZ | 1 |
TIN
| TIN | 1 |
TRAN
| TRAN | 1 |
TRN
| TRN | 1 |
TRNA
| TRNA | 1 |
UPGZ
| UPGZ | 2 |
UPHZ
| Union Pacific Railroad Company | 1 |
UPMZ
| UPMZ | 2 |
UPNZ
| Union Pacific Railroad Company | 2 |
UPSZ
| United Parcel Service | 1 |
UPUZ
| UPUZ | 1 |
USAZ
| XTRA Intermodal | 4 |
UUPM
| UUPM | 1 |
VETZ
| VETZ | 2 |
WTLZ
| WTL Rail Corporation | 1 |