Rail Transport Abbreviations and Acronyms

1. SSO
   Special Stop Order
2. SSOR
   Sisseton Southern Railway Company
3. SSP
   Signalling Supply Point
4. SSP
   Standard Signalling Principle
5. ST
   Springfield Terminal Railway Company
6. STABS
   Signalling and Telecommunications Area Budget System
7. STAR
   Signalling and Telecommunications Asset Register
8. STD
   Standard Deviation
9. STE
   Stockton Terminal and Eastern RR
10. STEP
    Safety, Teamwork, Excellence, Professionalism
11. STEX
    Sterling Chemicals, Inc.
12. STLH
    St Lawrence and Hudson
13. STMA
    St. Maries River Railroad Company
14. STN
    Special Traffic Notice
15. STO
    Senior Technical Officer
16. SUAB
    Southern Alabama RR
17. SV
    Shenandoah Valley Railroad
18. SVI
    Southern Railway of Vancouver Island
19. SVP
    Safety Verification Plan
20. SVRR
    Shamokin Valley Railroad Company

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