Just list every railroad you've seen at least one locomotive owned by in real life. My personal list (Note this is just on my YT): Union Pacific Kansas City Southern (CPKC) Canadian Pacific (CPKC) BNSF Railway Canadian National Norfolk Southern CSX Transportation Ferromex Amtrak Corpus Christi Terminal RR (Watco) Fort Worth & Western RR Texas & Northeastern RR (G&W) Dallas Garland & Northeastern RR (G&W) Massachusetts Bay Transport Authority Texas Rock Crusher RR (TNW Corp)
