| Acronym | Railroad | Acronym | Railroad | |
| UP | Union Pacific | GEXR | Goderich-Exeter Railway | |
| CN | Canadian National | CSX | CSX Transportation | |
| BNSF | Burlington Northern Santa Fe | NS | Norfolk Southern | |
| IC | Illinois Central (owned by CN) | CP | Canadian Pacific | |
| RA | RailAmerica | OSR | Ontario Southland Railway | |
| STCR | St Thomas Central Railway | CASO | Canada Southern | |
| CRIX | Citicorp Railmark Inc | STER | St Thomas & Eastern Railway | |
| WSJR | Waterloo-St. Jacobs Railway | NREX | National Railway Equipment | |
| StL&H | St Lawrence & Hudson | KCS | Kansas City Southern |