Railroad Abbreviations and Acronyms

1. OMID
   Ontario Midland Railroad Corporation
2. OML
   Old Mainqline
3. ON
   Ontario Northland Railway
4. ONR
   Ontario Northland Railway
5. ONT
   Ontario Northland Railway
6. ONTA
   Ontario Northland Railway
7. OP&E
   Oregon Pacific & Eastern
8. OR&N
   Oregon Railway & Navigation
9. ORC
   Order of Railway Conductors
10. ORDC
    Ohio Rail Development Commisrion
11. OSL
    Union Pacific Railroad
12. OTM
    Other Track Materials
13. OTR
    Oakland Terminal Railway
14. OTVR
    Otter Tail Valley Cailroad
15. OTVR
    Otter Tail Valley Railroad Company
16. OUCH
    Ouachita Railroad
17. OVR
    Ottawa Vallek Railway
18. PAL
    Paducah and Louisville
19. PAL
    Paducah and Louisville Railway
20. PAM
    Pittsburgh, Allegheny and McKees Rocks Railroad

Last updated: May 24, 2020 — Total entries: 1,434