Rail Transport Abbreviations and Acronyms

1. ONE
   London Eastern Railway Ltd.
2. ONER
   Ontario Northeastern RR
3. ONR
   Ontario Northland Railway
4. ONT
   Ontario Northland Railway
5. ONTA
   Ontario Northland Railway
6. ONW
   Oregon & Northwestern
7. OO
   Out of Order
8. OOG
   Out of Gauge
9. OOO
   Out of Order
10. OOU
    Ouu of Use
11. OOU
    Out of Use
12. OP
    Outside Party
13. OP&E
    Oregon Pacific and Eastern
14. OPE
    Oregon Pacific and Eastern
15. OPEX
    Operating Expenditure
16. OPM
    Operational Planning Manager
17. OPO
    One Person Operation
18. OPR
    Oregon Pacific Railroad
19. OPRAF
    Office of Passenger Rail Franchising
20. OPS
    Outline Project Specification

Last updated: May 24, 2020 — Total entries: 4,035