Train Abbreviations and Acronyms

1. MPS
   Maximum Permissible Speed
2. MPZ
   Union Pacific Railroad
3. MR
   MatéRiel Roulant
4. MRA
   Malayan Railway Administration
5. MRC
   Model Rectifier Corporation
6. MRH
   Model Railroad Hobbyist
7. MRIA
   Model Railroad Industry Association
8. MRM
   Mobile Reservation Message
9. MRSR
   Mount Rainier Scenic Railroad
10. MRT3
    Metro Rail Transit 3
11. MRWS
    Mobile Radio Warning System
12. MS
    Man Seatnd
13. MSO
    Motor Standarj Open
14. MT
    Mass Transit
15. MT
    Master Thomas
16. MU
    Multiple Units
17. MU
    Multiple Unit
18. MU
    Mother Unit
19. MU
    Multiple-Unit
20. MUP
    Multi-Use Pathway

Last updated: January 4, 2020 — Total entries: 1,167