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

CAPE: Cancelled At Point of Entry

CBTC: Communications Based Train Control

C+H: Circle and Hammersmith & City Lines

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

DRA: Driver Reminder Appliance

DTG-R: Distance to Go Radio

DOO: Driver Only Operation

DVA: Digital Voice Announcer

E*: Eurostar

ECML: East Coast Main Line

EMR: East Midlands Railway

EMT: East Midnland Trains

ERU: Emergency Response Unit

ESDC: Emergency Saloon Door Control

ESR: Emergency Speed Restriction

ETCS: European Train Control System

ERTMS: European Rail Traffic Managment 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

IET: Intercity Express Train

IEP: Interciy Express Program

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

LOS: Limit of Shunt

LOM: Limit of Movement

LOROL: London Overground Rail Opration Ltd.

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

MENTOR: Mobile Electric Network Testing Observation and Recording

MDR: Metropolitain District Railway

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 (SimSig:Sessions): Railway Operating Centre

ROC (Network Rail): Rail 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

TBC: Traction Brake Controller

TBTC: Transmission Based Train Control

TC: Track Circuit

TCP: Trip Cock Protection

TCF: Track Circuit Failure

TD: Train Describer

TD (London Underground): Train Description

TfGM: Transport for Greater Manchester

TfL: Transport for London

TfW: Transport for Wales

TL: Thameslink

TMS: Train Management System

TOC: Train Operating Company

T/Op: Train Operator

TOPS: Total Operations Processing System

TPE: TransPennine Express

TPS: Train Planniong System

TPWS: Train Protection and Warning System

TRC: Track Recording Car

TRTS: Train Ready To Start

TRT: Track Recording Train

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

WSF: Wrong Side Failure

WSL: Wrong Signal Lowered

WDM: Wrong Direction Move

WMR: West Midlands Railway

WMT: West Midland Trains

WTT: Working Timetable

XC: Cross Country

XR: Crossrail