Operations Special Interest Group
The Operations Special Interest Group
Focused on Realistic Prototype Operation
HomeJoin Us!About OPSIGDispatcher's Office
Our Quarterly Journal
Online ResourcesFAQs (Primer)Ops 101BibliographyBooksIndustry DatabaseInternet ResourcesOps VideosComing EventsMembers OnlyOPSIG Clothing

Operations SIG Common Abbreviations

Abbreviations were often used to make communication more efficient in the days of Morse code. Here are some that are fairly common.

Check Rule 223 or 224 of your standard rule book.

Know one that's missing? Please send it to webmaster@OPSIG.org

9Clear the line for train orders
19D"19 Order" Displayed
23A message to all
24-RLA locomotive brake system
ABSAutomatic Block Signal System
ACSAutomatic Cab Signal System
ACTAgainst Current of Traffic
App cktApproach Circuit
ATCAutomatic Train Control
ATSAutomatic Train Stop
BCContaminated fuel (previously Bad Coal)
BrBranch
C&EConductor and Engineer
CCORConsolidated Code of Operating Rules
CERefuelling (formerly Coaling Engine)
CktCircuit
ComComplete
CondrConductor
CSSCab Signal System
CTCCentralized Traffic Control System
CTDChief Train Dispatcher
CyCopy
Dbl trkDouble Track
DisprTrain Dispatcher
DivDivision
DivnDivision
DROrder
DTDouble Track
EngEngine
EngrEngineer
FDFlagged Down
FrtFreight
GYMGeneral Yardmaster
HwyHighway
JctJunction
JOEngine failure
MBSManual Block System
MinsMinutes
MPMile Post
MPHMiles Per Hour
MTMain Track
NDNot Displayed
NoNumber
NSNo Train Order Signal; or signal not displayed
ofcOffice
OKCorrect
OprOperator
OrigOriginating
OSTrain Report
OTOn Time
OTSOut of Service
PKInspection
PsgrPassenger
RFERoad Foreman of Engines (Engr's boss)
SD"Stop" Displayed
SDGSignal Displayed Green
SDRSignal Displayed Red
StrStreamline
SubSubdivision
SubdivnSubdivision
SuptSuperintendent
SwtgSwitching
T&ETrain and Engine
tfcTraffic
TMTrainmaster
TrkTrack
Trk cktTrack Circuit
TTTOTimetable and Train Order
TWTake (or taking) Water
UCORUniform Code of Operating Rules
XTrain will be held until train order is made complete
XCMeet and Meeting
YMYardmaster

Page updated: 2013 January 21
To Top of Page Copyright 2018, OPSIG Contact Us