Bradshaw:Glossary

For three-letter station codes see CRS codes.

Not everyone knows all the hundreds of rail-specific acronyms and initialisms, so if any pop up in conversation on the Discord server, add them and their meaning below so others can look them up.

Please keep these in alphabetical order so it is easy to find a specific term.

4LM: Four Lines Modernisation programme
ACOA: Adverse Change Of Aspect
ARL: Arriva Rail London
ARS: Automatic Route Setting
ASC: Area Signalling Centre
ATC: Automatic Train Control
ATO: Automatic Train Operation
ATOC: Association of Train Operating Companies
ATP: Automatic Train Protection
ATW: Arriva Trains Wales
AWC: Avanti West Coast
AWS: Automatic Warning System
BML: Bright Main Line
BR: British Rail
BTP: British Transport Police
C+H: Circle and Hammersmith & City Lines
CAPE: Cancelled At Point of Entry
CBTC: Communications Based Train Control
CIS: Customer Information System
CoT: Close of Traffic
CR: Chiltern Railways
CS: Caledonian Sleeper
CSA: Customer Service Assistant
CSDE: Correct Side Door Enable
CSL2: Customer Service Level 2
CSR: Cab Secure Radio
DCO: Driver Controlled Operation
DCV: Door Closed Visual
DDA: Disability Discrimination Act
DLR: Docklands Light Railway
DOO: Driver Only Operation
DRA: Driver Reminder Appliance
DTG-R: Distance to Go Radio
DVA: Digital Voice Announcer
E*: Eurostar
ECML: East Coast Main Line
EMR: East Midlands Railway
EMT: East Midnland Trains
ERTMS: European Rail Traffic Managment System
ERU: Emergency Response Unit
ESDC: Emergency Saloon Door Control
ESR: Emergency Speed Restriction
ETCS: European Train Control System
FGW: First Great Western
FOC: Freight Operating Company
GA: Greater Anglia
GC: Great Central
GN: Great Northern
GoA (0-4): Grade of Automation
GSM-R: Global System for Mobile Communications – Railway
GTR: Govia Thameslink Railway
GWML: Great Western Main Line
GWR: Great Western Railway
GX: Gatwick Express
HEX: Heathrow Express
HML: Highland Main Line
HS1: High Speed 1
HS2: High Speed 2
HST: High Speed Train
HT: Hull Trains
IC: Intercity
IECC: Intergrated Electronic Control Centre
IEP: Interciy Express Program
IET: Intercity Express Train
IMR: Interlocking Machine Room
IoW: Isle of Wight
JLE: Jubilee Line Extension
KYT: Know Your Train
LNER: London North Eastern Railway
LNR: London Northwestern Railway
LO: London Overground
LOM: Limit of Movement
LOROL: London Overground Rail Opration Ltd.
LOS: Limit of Shunt
LPTB: London Passenger Transport Board
LRT: London Regional Transport
LSL: Locomtive Services Limited
LT: London Transport
LTM: London Transport Museum
LTP: Long Term Plan
LUL: London Underground Limited
MDR: Metropolitain District Railway
MENTOR: Mobile Electric Network Testing Observation and Recording
MML: Midland Main Line
MOM: Mobile Operations Manager
MR: Metropolitan Railway
MTR: Mass Transit Railway (Hong Kong Subway)
NLE: Northern Line Extension
NMT: New Messurement Train
NR: Network Rail
NR: Northern Rail
NRM: National Railway Museum
NRN: National Radio Network
NSE: Network South East
OA: Open Access
OCS: Overhead Contact System
OLE: Overhead Line Equipment
OOL: On Our Lines (This project)
OPO: One Person Operation
PEA: Passenger Emergency Alarm
PED: Platform Edge Doors
PEP: Prototype Electro Pneumatic Train
PIS: Passenger Information System
PLPR (1-4): Plain Line Pattern Recognition
PRM: Persons with Reduced Mobility
PSA: Passenger Service Agent
PSB: Power Signal Box
PSD: Platform Screen Doors
PSR: Permanent Speed Restriction
PTI: Platform Train Interface
PTS: Personal Track Safety
RAT: Rail Adhesion Train
RDG: Rail Delivery Group
REC: Railway Emergency Call
RGI: Rail Gap Indicator
RHTT: Rail Head Treatment Train
ROC (Network Rail): Rail Operating Centre
ROC (SimSig:Sessions): Railway Operating Centre
RSF: Right Side Failure
RTT: Real Time Trains
RVAR: Rail Vehicle Accessibility Regulation
SATS: Staff Assisted Train Services
SCAT: Speed Control After Tripping
SCC: Service Control Centre
SCL1: Service Controller Level 1
SCL2: Service Controller Level 2
ScR: ScotRail
SE: Southeastern

SMA (0.5-14): Signal Migration Area SN: Southern Rail SoT: Start of Traffic SotD: Signal of the Day SPAD: Signal Passed At Danger SPAR: Signal Passed At Red SPAS: Signal Passed At Stop SPT: Signal Post Telephone SR: ScotRail SSR: Sub-Surface Railway STN: Special Train Notice STP: Short Term Plan SWML: South West Main Line SWR: South Western Railway SWT: South West Trains T/Op: Train Operator TBC: Traction Brake Controller TBTC: Transmission Based Train Control TC: Track Circuit TCF: Track Circuit Failure TCP: Trip Cock Protection TD (London Underground): Train Description TD: Train Describer TfGM: Transport for Greater Manchester TfL: Transport for London TfW: Transport for Wales TL: Thameslink TMS: Train Management System TOC: Train Operating Company TOPS: Total Operations Processing System TPE: TransPennine Express TPS: Train Planniong System TPWS: Train Protection and Warning System

TRC: Track Recording Car
TRT: Track Recording Train
TRTS: Train Ready To Start
TRU: Track Recording Unit
TRV: Track Recording Vehicle
TS: Tube Stock
TSC: Transport Strategy Centre
TSF: Track Section Failure
TSI: Technical Specifications for Interoperability
TSR: Temporary Speed Restriction
TSW: Train Sim World
TTN: Timetable Notice
TYT: Track Your Train
UERL: Underground Electric Railway Company of London
UTO: Unattended Train Operation
VAR: Varied Timetable
VETC: Virgin Trains East Coast
VOBC: Vehichle OnBoard Computer
VSTP: Very Short Term Plan
VT: Virgin Trains
WAML: West Anglia Main Line
WCML: West Coast Main Line
WCRC: West Coast Railway Company
WDM: Wrong Direction Move
WMR: West Midlands Railway
WMT: West Midland Trains
WSF: Wrong Side Failure
WSL: Wrong Signal Lowered
WTT: Working Timetable
XC: Cross Country
XR: Crossrail