ABFZ
| Arkansas Best Freight | 5 |
AHTZ
| AHTZ | 1 |
ALLZ
| Alliance Shippers Incorporated | 2 |
AXXZ
| Agricultural Express of America | 1 |
BMDZ
| Minnesota Dakota and Western Railway Com | 1 |
BN
| Burlington Northern | 1 |
BNZ
| Burlington Northern and Santa Fe Railway | 3 |
CNWZ
| Chicago & Northwestern | 1 |
FEDZ
| Federal Express | 11 |
FT
| FT | 2 |
ITRZ
| ITRZ | 1 |
JBHZ
| J. B. Hunt Transport Incorporated | 1 |
KCXZ
| KCXZ | 1 |
KYSB
| KYSB | 1 |
LNZZ
| Louisville & Nashville | 1 |
MATZ
| Matson Navigation Company | 3 |
MILZ
| Soo Line Railroad Company | 2 |
MITZ
| MITZ | 1 |
MPZ
| Missouri Pacific | 1 |
REAZ
| Transamerica Leasing Incorporated | 6 |
RFPZ
| CSX Transportation Incorporated | 1 |
RIZ
| Rock Island | 1 |
RLZ
| R&L Transport | 2 |
SBOZ
| SBOZ | 1 |
SFO
| SFO | 1 |
SKRZ
| XTRA Intermodal | 2 |
SOOZ
| Soo Line Railroad Company | 1 |
TIRZ
| Union Pacific Railroad Company | 2 |
TTOZ
| Totem Ocean Trailer Express Incorporated | 2 |
UPGZ
| UPGZ | 1 |
UPSZ
| United Parcel Service | 1 |
YRCZ
| YRCZ | 3 |