ABF
| ABF | 1 |
ATSF
| Atchison Topeka & Santa Fe | 2 |
AVAZ
| CSX TRANSPORTATION, INC. | 1 |
BOZ
| Baltimore & Ohio | 1 |
CNAZ
| Grand Trunk Western Railroad Incorporated | 1 |
CNWZ
| Chicago & Northwestern | 1 |
CRZ
| Conrail Trailer | 1 |
DLW
| Delaware Lackawanna & Western | 3 |
EL
| Erie Lackawanna | 1 |
ELZ
| ELZ | 2 |
ICG
| Illinois Central Gulf | 1 |
ICGZ
| Illinois Central Railroad Company | 1 |
MECZ
| MECZ | 3 |
MILZ
| Soo Line Railroad Company | 1 |
NYCU
| New York Central | 1 |
PBSZ
| CSX Intermodal Incorporated | 1 |
PCTZ
| PCTZ | 1 |
REAZ
| Transamerica Leasing Incorporated | 2 |
RFCZ
| RFCZ | 2 |
ROAD
| ROAD | 2 |
SBD
| Seaboard System | 2 |
SFTZ
| Santa Fe | 2 |
SNC
| Saratoga & North Creek Railway | 1 |
SOUZ
| Norfolk Southern Railway Company | 1 |
TPWZ
| Toledo, Peoria and Western Railway | 1 |
XTRZ
| XTRA Intermodal | 1 |