| 1 | TCAX | Transportation Corp. of America | added 4/1974; 1/1975-1/1980; eliminated 4/1991 | | NAKINA |
| 2 | TCAX | Transportation Corp. of America | added 4/1991; eliminated 1/1994 | | NAKINA |
| 3 | TCAX | General Electric Railcar Services Corp. | added 1/1994; eliminated 1/2000 | | NAKINA |
| 4 | TCAX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 5 | TCAX | Transportation Corp. of America | added 4/74; 1/75-1/80; eliminated 4/91 | | NRHS |
| 6 | TCAX | Transportation Corp. of America | added 4/91; eliminated 1/94 | | NRHS |
| 7 | TCAX | General Electric Railcar Services Corp. | added 1/94; eliminated 1/2000 | | NRHS |
| 8 | TCAX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 9 | TCAX | *TRANSPORTATION CORPORATION OF AMERICA | | | PWRC |
| 10 | TCAX | +(NATX) GENERAL ELECTRIC RAIL SERVICES CORPORATION | | | PWRC |
| 11 | TCAX | Transportation Corporation of America | | | RSRV |
| 12 | TCAX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
| 13 | TCAX | Transportation Corp. of America | | USA | TRAFFIC |