Rail Transport Abbreviations and Acronyms

1. SCS
   Signalling Control System
2. SIS
   Staff Information System
3. spT
   Signal Post Telephone
4. spT
   Strathclyde Passenger Transport
5. U
   Unknown
6. USN
   United States Navy
7. AAR
   American Association of Railroads
8. AAX
   Agrico Chemical Company
9. ACL
   Atlantic Coast Line Railroad
10. ALS
    Alton and Southern Railway
11. ALY
    Allegheny and Eastern Railroad Incorpora
12. AMU
    Access Management Unit
13. ARR
    Alaska Railroad
14. ATW
    Atlantic and Western Railway
15. CBAQRR
    Chicago, Burlington and Quincy Railroad
16. CCU
    Core Control Unit
17. CER
    Change En Route
18. CIW
    CHICAGO & ILLINOIS WESTERN
19. CSS
    CHICAGO SOUTH SHORE & SOUTH BEND
20. IAT
    IOWA TRACTION RAILROAD CO

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