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