| 145 | Empty car under directive CSD145. |
| 145A | Loaded car under directive CSD145 that is to return to agent at city specified. |
| 145S | Loaded car under directive CSD145 that is to return to shipper at billed origin. |
| 145X | Assigned TTX car that is to be returned to shipper at billed origin by reverse of loaded move. |
| 150 | Unassigned special equipped car that is to be handled in accordance with the provisions of directive CSD150. |
| 150X | Unassigned TTX car that is to be handled in accordance with trailer train directive 150. |
| 155 | Empty car under CSD155. |
| 155A | Loaded car under directive CSD155 that is to return to agent at city specified. |
| 155S | Loaded car under directive CSD155 that is to return to shipper at billed origin. |
| 435 | Empty car under directive CSD435. |
| 435A | Loaded car under directive CSD435 that is to return to agent at city specified. |
| 435S | Loaded car under directive CSD435 that is to return to shipper at billed origin. |
| 439 | Special heavy duty flat car that is to be handled under the provisions of directive CSD439. |
| 34617 | Car being returned per car owner's instructions. |
| 34618 | Car being returned per the pool operator's instructions. |
| 34619 | Car being returned per AAR/ICC instructions. |
| CMD1A | Loaded TTX cars under directive CMD1 that are to be returned to the origin road at the city specified. |
| CMD1S | Loaded TTX cars under directive CMD1 that are to be returned to shipper at billed origin. |
| CSR5 | Empty Car Moving Under Car Service Rule 5 Charges |