| 1 | RRCX | Radar Railcar, Inc. | 1/1994-7/2005 (not listed) | | NAKINA |
| 2 | RRCX | Regent Refining (Canada) Ltd. (marks changed from TLCX) | added 4/1956; 10/1957; eliminated 10/1958 | | NAKINA |
| 3 | RRCX | Regent Refining (Canada) Ltd. | 10/57; eliminated 10/58 | | NRHS |
| 4 | RRCX | Radar Railcar, Inc. | 1/94-7/2000 | | NRHS |
| 5 | RRCX | *REGENT REFINING (CANADA) LTD. | | | PWRC |
| 6 | RRCX | +RADER RAILCAR, INC. | | | PWRC |
| 7 | RRCX | Radar Railcar | | | RSRV |
| 8 | RRCX | RADAR RAILCAR, INC. | | | SCAC4 |
