University of and Rail List of Acronyms and Abbreviations for Railways (LAAR) Mark 24, February 2011 This list was originally produced by the Railway Systems Group at the University of Sheffield, in cooperation with staff from Railtrack, , Bechtel and HMRI. It was expanded with the support of many other railwy industry organisations and individuals. Members of staff at the University of Birmingham and the team of The Railway Consultancy update the Rail Lexicon on a regular basis. Obsolete terminology is shown in grey, where the status is known. Comments are welcomed by: [email protected] and [email protected] . In general, the UK term “railway” is used rather than the US term “railroad”.

3G – 3rd Generation Mobile Phone ATR – (1) Automatic Reporting 4GL – Fourth Generation Language ATR – (2) Automatic Train Regulation ATS – (1) Automatic A– A – ATS – (2) Automatic Train Supervision ATS – (3) Applicable Timetable Service AAR – Association of American Railroads ATSS – Automatic Train Supervision System AB – Absolute Block (system of working) ATT – Active ABCL – Automatic Barrier Crossing Locally ATTA – Automatic Top and Alignment monitored ATWS – Automatic Track Warning System ABCR – Automatic Barrier Crossing Remotely monitored AVACS – Aire VAlley Control System

ADIF – Spanish Manager AVB – Automatic

AHB – Automatic half barrier crossing AVI – Automatic Vehicle Identification

AHQ – (British Police) Area Headquarters AWB – Advance Warning Board

ALARP – As low as reasonably practicable AWE – Advance Warning Estimates

ALCRAM – All Risk Assessment AWG – Adhesion Working Group Model AWS – (1) AM – Amplitude Modulation AWS – (2) Auxiliary Wayside System

AOA – Angel Of Attack AWS – (3) Audible Warning System AOCL – Automatic Open Crossing Locally monitored B– B –

AOCR – Automatic Open Crossing Remotely monitored b – braking rate (abbreviation) ARS – Automatic Route Setting B/C – Benefit to Cost Ratio

ASLEF – Associated Society of BAA – British Authority Engineers and Firemen. BABT – British Approval Board for Telecommuni-

ASPER – ASset PERformance database cations

AT – (1) Auto Transformer (supply) BACS – Banking Automated Credit System AT – (2) Auto Transformer Baneverket – Swedish infrastructure manager

ATA – Automatic Track Alignment BATS – Business Analysis of Train Services

ATC – BBEST – Balfour Beatty Embedded Slab Track BBRM – Balfour Beatty Rail Maintenance Ltd. ATCO – Association of Transport Co-ordinating Offices (formerly SIE)

ATM – Amended Timetable Manager BBRPL – Balfour Beatty Rail Projects Ltd. ATO – Automatic Train Operation BBRR – Balfour Beatty Rail Renewals

ATOC – Association of Train Operating Companies BCA – Business Critical Application (IT term)

ATP – Automatic Train Protection BCC – Banking Control Account ATPM – Automatic Train Protection Manual BCK – Brake

Page 1 LAAR Mark 24, February 2011

BCRRE – Birmingham Centre for Railway Research BSPG – Business Systems Policy Group: an RTIS and Education authorising body BCU – Brake Control Unit BST – (1) Basic Signalling Technology BCWS – Budgeted Cost of Work Scheduled BST – (2) British Summer Time BDM – (1) Business Development Manager BT – Booster Transformer BDM – (2) Business Development Manual BTA – British Transport Advertising BFK – Brake BTOG – British Transport Officers’ Guild BFO – Brake BTP – British Transport Police BH–RAIL – Bull Head Rail Section BTS - Base Transceiver Station BHX – Bank Holiday eXcepted BZP – Bright Zinc Plating BIFS – Billing Infrastructure Freight System BMB – Block marker board C– C –

BMIS – Business Management Information System BMS – Basic Mechanical Signalling C&W – Carriage and Wagon C/E – Country End BNC – British National Connector BOP – Booking On Point – Commercial Name for Tilbury and Southend lines BP – (1) Brake Pipe CA – (1) CAble, BP – (2) British Petroleum CA – (2) Commercial Assistant, BP – (3) Business Plan CA – (3) Cash Accounts BPA – (1) Business Planning Accountant CAD – Computer Aided Design BPA – (2) Business Planning Analysis CAG – (1) Contract Approval Group BPM – Business Process Manual CAG – (2) Project Compliance & BPR – Business Policy Review group: an RTIS body Assurance Group BR – (1) British Railways CAHA – Claims Allocation and Handling Agreement

BR – (2) (see also RIDRR) BRASS – British Railways Additional Superannua- CAMPS – Computer Assisted Maintenance Planning

tion Scheme System

BRB – CAMS – Cost Allocation Management System BRBS – British Railways Business Systems (former CAPE – (1) Train Cancelled, derived from former

BR equivalent of RTIS) Telegraph Code BRENDA – BRidge ENgineer Data, computer system CAPE – (2) Computer Aided Project Engineering

BRG – Business Review Group CAPEX – CAPital EXpenditure – funds spent on BRI – British Rail International fixed assets BRIMS – British Rail Incident Monitoring Syste CAPM – Capital Asset Pricing Model BRIS – British Rail Infrastructure Services CAPP – Confirmed Annual Possession Plan BRP – Budget Reporting Pack CAPS – Colchester Area Power Supplies BRR – British Rail Research CAR – Corrective Action Request BRS – Business Route Section CARINO – TOPS (Total Operations Processing

BRSA – British Rail Staff Association System) wagon number BRT – British Rail Telecommunications , now known CARKND – TOPS (Total Operations Processing

as RACAL System) wagon type

BRV - Brake Release Valve (LUL) CAT – Cable Avoiding Tool

BS – British Standard CATP – Continous ATP

BS spec – British Standards specification CATE – Computer Assisted Train Enquiries BS&TE – Business Signal & Telecommunications CB – (1) Central Battery Engineer CB – (2) Circuit Breaker BSC – Base Station Controller CB – (3) Car body, carriage body BSK – Brake Second Corridor CBA – Cost Benefit Analysis BSN – Bridge Strike Nominee (see Bridge Bash / CBCT – Communications Based Train Control Strike) CBI – (1) Confederation of British Industry BSO – Brake Second Open CBI – (2) Computer Based

BSP – Bulk Supply Point CBS – Contract Breakdown Structure CBTC – Communication Based Train Control

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CCA – Current Cost Accounting CITDS – Construction Industry Tax Deduction

CCF – Control Centre of the Future Scheme CCI – Confirmation of Client's Instruction CITR – Centre for Independent Transport Research

CCM – Company Control Manager (EWS) (London)

CCS – Contract Conditions – Safety CLASS 0 – Light CCSC – Contractor Core Safety Case CLASS 1 TRAINS – Express passenger trains, mail trains and some emergency trains CCTV – Closed Circuit TeleVision CLASS 2 TRAINS – Stopping passenger trains CCU – Core Control Unit CLASS 3 TRAINS – Express parcel trains CD – (1) Closed Doors platform indicator CLASS 4 TRAINS – Express freight trains – 75mph CD – (2) Circuit Diagramme maximum speed CD ROM – Compact Disc Read Only Memory CLASS 5 TRAINS – Empty coaching stock trains CDL – Central Door Locking CLASS 6 TRAINS – Express freight trains – 60mph CDM – (1) The Construction (Design and maximum speed Management) Regulations 1994 CLASS 7 TRAINS – Freight trains with 45mph CDM – (2) Control Duty Manager maximum speed CDMA – Collision Detection Multiple Access CLASS 8 TRAINS – Freight trains with 35mph

CDNP – Cheques Drawn Not Presented maximum speed and engineers’ trains

CE – Contract Engineer CLASS 9 TRAINS – trains CEDAC – Civil Engineering Design And CM – (1) Contracts Manager

Construction CM – (2) Coded Manual

CEDG – Civil Engineering Design Group CMD – Central Materials Depot

CEGB – Central Electrictricity Generating Board CMS – Competence Management System CENELEC – European Committee for Electro- COA – Chart Of Accounts technical Standardisation CoCoSig – Command, Control and Signalling (TSI) CENTRO – Marketing name of CoCP – Code of Construction Practice Passenger Transport Executive COCS – Computerised Operations Control System CER – (1) Change En Route COI – Confirmation Of verbal Instruction CER – (2) Community of European Railways COMET – Community Metro CER – (3) Communications Equipment Room COMPASS – COMbined Performance And Safety CERT – City of Edinburgh Rapid Transport System CESM – Civil Engineering Safety Manual CoPA – Control of Pollution Act 1974 CET – Controlled Emission Toilet COS – Central Operating Section CGT – Capital Gains Tax COS – Client Operating System CH – CHiltern Railway Company COSHH – Control Of Substances Hazardous to CHALET – Casualties, Hazards, Access, Location, Health 1988 Emergency services and Time COSS – Controller of Site Safety CHAPS – Clearing House Accounts Payable System COT – Condition Of Track. CHIP – Chemicals Hazard Information and COTS – Commercial Off The Shelf equipment Packaging regulations COWD – Cost Of Work to Date CI – Contract Instruction CPC – Circuit Protective Conductor CIÉ – Corás Iompair Éireann, holding company of Iarnród Éireann (Irish Rail) CPD – Continuing Professional Development

CILT – Chartered Institute of Logistics and Transport CPD –Capital Programmes Directorate CIM – rules for international carriage of goods (Con- CPFR – Crossrail Programme Functional vention Internationale concernant le transport Requirements des marchandises par chemins de fer) CPM – Codes per Minute

CIMA – Chartered Institute of Management CPMG – Company Performance Management Group Accountants CPMT – Central Project Management Team, WCML CIMAH – Control of Industrial Major Accident CPO – Compulsory Purchase Order

Hazard CPPP – Confirmed Period Possession Plan

CIMU – Central Infrastructure Maintenance Unit CPS – Crown Prosecution Service

CIP – Core Investment Programme CPST – Central Project Sponsor’s Team, WCML

CIS – Customer Information System CR – Change Request CITB – Construction Industry Training Board

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CRA – Call Routing Apparatus DAPF – Document Amendment Proposal Form CRC – Class Representative Committee DAPP – Draft Annual Possession Plan CRE – (1) Contractor’s Responsible Engineer DART – (1) Dublin Area , the coastal CRE – (2) Conductor Rail Equipment metro system in Dublin CRG – (1) Contracts Review Group DART – (2) Developing Auckland CRG – (2) Commercial Review Group DART – (3) Digital Advanced Radio for Trains CRL – Crossrail ltd. DB – Deutsche Bundesbahn, German State Railways CRR – Competition & Regulatory Review DB – Deutsche Bahn, German State Railways CRS – Computerised Reservation System DB AG – Deutsche Bahn AG, German State Rail-

CRT – (1) Critical Rail Temperature ways CRT – (2) Construction Round Table DB Netz – German infrastructure manager CRUCC – Central Rail Users’ Consultative DB Regio – Deutsche Bahn Regio Committee DB Schenker – Deutsche Bahn Schenker (formerly CSA – Cross–Sectional Area English, Welsh and Scottish railway - EWS) CSAC – Candidate Special Area of Conservation DBFO – Design Build Finance Operate (Highways Agency Tender arrangements) CSC – (1) Connex South Central DBVIC – Driver’s Brake Valve Isolating Cock (LUL) CSC – (2) Contractor's Safety Case DBSO – Driving Brake Second Open (Anglia TOC CSDE – Correct Side Door Enable Push–Pulls) CSE – DC – Direct Current CSI – Common Safety Indicator DCA – Data Concentrator Appreciation CSM – (1) Commercial Services Manager DCF – Discounted Cash Flow CSM – (2) Customer Service Manager DCIO – Deputy Chief Inspecting Officer (or CSM – (3) Common Safety Method Railways)

CSR – Cab Secure Radio DCM – Duty Contracts Manager CST – Common Safety Target DCP – (1) Document Control Point

CT – DCP – (2) Designated Competent Person CTC – Centralised Traffic Control DCU – Digital Control Unit CTOC – Crossrail DD – Direct Debit

CTR – Cost Time Resource DDA – (1) Disability Discrimination Act

CTR1 – Channel Route 1 (via Tonbridge) DDA – (2) Design & Development Authority

CTR2 – Route 2 (via Maidstone) DDI or DD&I – Design Development and

CTR3 – Channel Tunnel Route 3 (via Redhill) Implementation CTRL – Channel Tunnel Rail Link DeBo – Designated Body (as defined by the RIR)

CTRU – Central Track Renewals Unit DEL – Down Electric Line

CV – Curriculum Vitae DeltaRail – Formerly British Rail Research & AEA CWG – Canary Wharf Group Technolgy Rail CWM – Carriage Washing Machine DEMU – Diesel Electric CWPR – Company Weekly Performance Report DEP – Designated Earth Point CWR – Continuously Welded Rail DETP – Detailed Engineering Train Plan CWT – Carlson Wagonlit DETR – Department of the Environment, Transport and the Regions D– D – DFL – Down Fast Line DFO – Depot Facility Owner

D&C – Design and Construction DFT – DART Fixed Terminal

D&D – Design & Development DfT – Department for Transport

D&DA – Design and Development Authority DG – Dangerous Goods

D&DR – Design & Development Report DGI – Dangerous Goods Incident

D&I – Design & Implementation DGL – Down Goods Loop D&IA – Design and Implementation Authority (see DGPS – Differential Global Positioning by Satellite.

also DD&I) DIADS – Diagram Input And Distribution System

DAB – Departmental Advice (Blue). DiPTAC – Disabled Persons Transport Advisory

DAC – Depot Access Conditions Committee DAL – Down Avoiding Lane

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DIRFT – Daventry International Terminal DTS – (1) Dynamic Track Stabiliser DIS – Flexible DIsplay System (IECC replacement DTS – (2) Data Transmission System

for SDS) DVT – .

DLM – Data Link Module DWL – Dynamic Warning Lights

DLR – Docklands DWP – Department of Work and Pensions

DM – Deutsche Mark (former German Currency) DX – Direct eXtract (air distribution system) DML – (1) Data Manipulation Language DML – (2) Down Main Line E– E – DMMU – Diesel Mechanical Multiple Unit

DMSS – Development Manager, Signalling Strategy E – Energy (normally measured in J or Ws)

DMU – E&G – Edinburgh to Glasgow line

DNC – Declared Non–Compliance E&M – Earth and Mark DO – Driver Only E&OD – Engineering and Operations Development DoE – Department of the Environment E&P – (1) Electrification and Plant

DoETR –Department of the Environment, Transport E&P – (2) Engineering and Production and the Regions E,L&N – Early, Late and Night (turns of duty) DOO – Driver Only Operation EA – (1) East Anglia DOO(NP) – Driver Only Operation – Non Passenger EA – (2) Electronics Appreciation DOO(P) – Driver Only Operation – Passenger EAC – (1) Extended Arm Contract

EAC – (2) Equivalent Annual Cost DOP – Driver Only Passenger DOS – Disk Operating System EAM – Engineering Access Manager EAMG – Engineering Access Management Group DOT – Department Of Transportation (United States) DoT or DTp – (former) Department of Transport EAWA – Electricity at Work Act EAZ – East Anglia Zone DP – Delivery Partner DPA – Delegated Procurement Authority EAZIAL – Easy Access Zonal Infrastructure Asset Log DPC – (1) Data Protocol Converter EBA – Eisenbahnbundesamt (German Regulator) DPC – (2) Development Planning Centre EBS – Emergency Bypass Switch (on ) DPC – (3) Damp Proof Course EC – (1) European Commission DPI – Dye Penetrant Inspection EC – (2) European Community (now EU) DPL – (1) Down Platform Line EC4T – Electric Current for Traction DPL – (2) Down Passenger Loop ECC – English China Clays DPM – Development Planning Manager ECML – DPPP – Disabled People's Protection Policy y ECO – Electrical Control Operator DPPP – Draft Period Possession Plan ECR – (1) Electrical Control Room DQM – Data Quality Manager ECR – (2) Evaluation of Change Request DRA – Driver Reminder Appliance ECRO – Electrical Control Room Operator DRACAS – Data Reporting, Analysis & Corrective ECS – Empty Coaching Stock Action System DRM – Delivery Resource Manager ECU – (former) European Currency Unit (now EURO) DRS – (1) EDB – Electrodynamic brake DRS – (2) Drive Reverse Switch EDI – Electronic Data Interchange DRS – (3) Down Refuge EDP – Electrification Distribution and Plant DSD – Driver’s Safety Device EDP – Electronic Data Processing DSE – Display Screen Equipment EE&CS – Electrical Engineering & Control Systems DSL – Down Slow Line EEB – Eastern Electricity Board DSP – Digital Signal Processing EEC – European Economic Community, now referred DSS – formerly Department of Social Security to as the EU DTG-R – Distance To Go-Radio EEN – Examining Engineer’s Nominee (for bridge DTI – Department of Trade and Industry strikes)

DTL – Down Tilbury Loop E/E/PES – Electrical /Electronic /Programmable

DTMF – Dual Tone Multi Frequency Electronic Systems DTN – Data Transmission Network EFC – External Financing Contribution

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EFE – Electrification Fixed Equipment EROS – (1) Early Rationalisation Of Signalling EFL – External Financing Limit EROS – (2) Efficiency by means of Rationalisation EFPL – Economical Facing Point Lock Of Signal boxes

EFRTC – European Federation of Railway EROS – (3) Emergency Restriction Of Speed Trackwork Contractors ERRI – European Rail Research Institute EG – Executive Grade: old style executive job ERRAC – European Rail Research Advisory Council

grading system ERTMS – European Railway Traffic Management EHD – East Ham Depot System EI – Electrical Installation ES – Engineering Supervisor EIA – (1) Electronics Industry Association (standards ESI – Electricity Supply Industry setting body) ESM – Engineering Safety Management (Yellow EIA – (2) Environmental Impact Assessment Book) EIB – European Investment Bank ESMS – Engineering Safety Management System EIM – European Infrastructure Managers ESR – Emergency Speed Restriction (association) ESSD – Electro-Static Sensitive Device

EIP – Examination In Public ETA – Expected Time of Arrival EIRENE – European Integrated railways Radio ETB – Electronic Token Block

Enhanced NEtwork ETCS – European Train Control System

ELCB – Earth Leakage Circuit Breaker ETD – (1) Expected Time of Departure

ELP – East London Partnership ETD – (2) National Extension Trunk Dialling

ELR – Engineers Line Reference ETE – Electric Traction Engineers

EM – Environmental Manager ETH – Eidgenössische Technische Hochschule

EMC – ElectroMagnetic Compatibility (Swiss Federal Institute of Technology) EMGTPA – Equivalent Million Gross Tonnes Per ETH index – Electric Trains Heating Capacity (on

Annum traction rolling stock)

EMI – ElectroMagnetic Interference ETHERNET – Computer cabling system EMP – Environmental Management Plan ETM – Electric Track Maintenance EMS – (1) Environmental Management Statement ETR – Electronic Train Recording. EMS – (2) Engineering Management System ETRB – Electronic Train Register Book EMU – (1) , ETRM – Engineering Train Routing Map EMU – (2) European Monetary Union EU – European Union

EN – Euro Norm EUCG – End User Computing Group

ENS – European Night Services EUKL – Eurostar (UK) Ltd

EOA – End of Authority EuroSPIN – European Seamless Passenger EOTD – End of Train Device Information Network EP – Electronic Principles EVA – Ethylene Vinyl Acetate EPA – Engineering Publications Assistant EVR – Early Voluntary Retirement EPB – Electro-Pneumatic Brake EWD – Each Week Day EPBIC – Electro-Pneumatic Brake Isolating Cock EWI – Emergency Warning Indicator (LUL) EWS – English, Welsh & Scottish Railway Ltd.

EPD – Engineering & Production Directorate EWSA – Engineering Works & Safety Arrangements. EPI – Environmental Performance Indicator (LUL) EPROM – Erasable Programmable Read Only ExCo – Railtrack Line Executive Committee Memory Expotel – hotel accommodation and conference EPS – (1) Earnings Per Share booking agency EPS - (2) Enhanced Permissable Speed EZP – (1) Electro–Zinc Plating EPS – (3) European Passenger Services EZP – (2) Engineering Zone of Possession EQAP – EQuipment APpreciation F ER – Employer’s Representative – F – ERA – European Railway Agency F/B – Foot Bridge ERDF – European Regional Development Fund F/H – FreeHold FA – Fixed Assets FAQ – Frequently Asked Question

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FAST – (1) Federation Against Software Theft FRS – (1) Financial Reporting Standard, FAST – (2) Facility for Accelerated Service Testing, FRS – (2) Functional Requirements Specification + Pueblo, USA FS – (1) Feeder Station

FAT – Factory Acceptance Test FS – (2) Fixed Stations, trackside radio equipment for FBMIS – Finance and Business Management cab secure radio

Information System: now known as BMIS FSG – Financial Statement Generator: a reporting FBP – Fixed Block Processor tool within the BMIS system FB-RAIL – Flat Bottom Rail FSH – Full Screen Height FC – Financial Controller FSK – Frequency Shift Keying FCU – Fixed Communications Unit FTA – (1) Fault Tree Analysis FDC – (1) Financial Data Control FTA – (2) Federal Transit Administration (of the FDC – Framework Design Consultant DOT, United States)

FDDB – Fibre Distributed Database FTA – (3) Freight Transport Association

FDDI – Fibre Distributed Data Interface FTS – Failure To Stop

FDM – Frequency Division Multiplex FUG – Freight UpGrade

FE – (1) Finite Elements FURNO – Until FURther NOtice FE – (2) Foundation Electronics FWI – Fatality & Weighted Injuries

FEA – Finite Element Analysis FX – Foreign Exchange FFG – Freight Facilities Grant FFT – Functional Fault Tree G– G – FGE – G&SW – Glasgow and South Western line FGW – First Great Western GBP – Pound FIBU – FIfty hertz Booster Unit GBPRT – Great Britain Passenger Rail Timetable FIO – For Information Only GBV – Gross Book Value FIRM – Increases Regulation Mechanism GCC – Gauge Corner Cracking FIS – Fault isolating switch (LUL) GDI – Graphical Data Interface FK – Corridor first GDP – Gross Domestic Product FLAWS – a computer database of rail flaws GE – Great Eastern FLT – Freight Liner Terminal GENIUS – GEmini for Non Integrating Unit Stock FM – Frequency Modulation GEOGIS – GEOGraphic Information System FMEA – Failure Mode and Effects Analysis GER – FMECA – Failure Mode Effect and Criticality GF – Ground Frame Analysis GIJ – Glued Insulated rail Joint FMES – Fixed & Mobile Equipment Supply GIS – (1) Geographic Information System FN – Fault Number + GIS – (2) Graphical Information System FNW – FO – Open First GL – (1) Goods Line GL – (2) General Ledger FOC – (1) Freight Operating Company FOC – (2) Fibre Optic Cable GLE – Grant Lyon & Eagre GLW – Gross Laden Weight FOC – (3) Free Of Charge FORI – Fibre Optic Route Indicator GMITA – Greater Manchester Integrated Transport Authority FOU – Freight Operating Unit GMITE – Greater Manchester Integrated Transport FP – FootPath (level crossing) Executive FPL – Facing Point Lock GMPTA – formerly Greater Manchester Passenger

FPM – Fire Precautions Manager Transport Authority

FR – Feasibility Report GMPTE – formerly Greater Manchester Passenger FRA – (1) Federal Railroad Administration, USA Transport Executive FRA – (2) Fixed Rate Agreement GMT – Greenwich Mean Time FRAME – Fault Reporting And Monitoring GN – Great Northern Line (Kings Cross to Equipment Cambridge via Royston) FRED – Financial Reporting Exposure Draft GNER – Great North Eastern Railway FRP – Field Reporting Procedures GTS – Greater Nottingham Rapid Transit System

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GOB – Gospel Oak to Barking line HMFI – Her Majesty’s Factory Inspectorate GOL – Government Office for London HMI – Human Machine Interface GP – General Purpose HMRI – Her Majesty's Railway Inspectorate GPF – General Protection Fault (in computing) HOBC – High Output Ballast Cleaner GPL – Ground Position Light HOCM – Head of Contract Management GPR – General Purpose Relief (staff) HOE (HofE) – Head Of Engineering GPRS – General Packet Radio Service HOP – Head Of Projects GPS – Global Positioning by Satellite system HOPO (HoPO) – Head Of Projects Organisation GRIP – Guide to Railway Investment Projects HOPP – Head Of Property Projects GRN – Goods Received Note HQ – HeadQuarters GSM – Global System for Mobile communications HR – Human Resources GSM–R – Global System for Mobile commu nications HRA – Heritage Railway Association

for Railways HRM – Human Resources Manager

GSP – Ground Switch Panel HRRP – (Crossrail Project) Hazard Record Review GSPP – General Specification for Possession Panel

Planning HRS – Human Resources System

GTD – Group Tax Department HSC – Health & Safety Commission

GTO – Gate Turn Off Thyristor HSDR – High Speed Data Ring

GTRM – GT Railway Maintenance HSE – Health & Safety Executive (UK)

GUI – Graphical User Interface HSM – Hand Signal Man

GUV – HST – High Speed Train

GW – Great Western HSTRC – High Speed Track Recording Coach

GWH – Great Western Holdings HSTRT – (1) High Speed Track Recording Train

GWML – HSTRT – (2) High Speed Track Relaying Train GWR – HSWA – Health and Safety at Work Act 1974

GWT – Great Western Trains HTS – High Tensile Steel

GWUG – Great Western UpGrade HV (hv) – (1) High Voltage

GWZ – Great Western Zone HV (hv) – (2) High Visibility GZ – (Safeguarded) Greenzone HVAC – Heating, Ventilating and Air Conditioning H HVI – High Voltage Impulse ( type) – H – HVITC – High Voltage Impulse Track Circuit

H&S – Health and Safety HW – HardWare HW–Point – Particular type of point with electric H&SE – Health & Safety Executive (UK) motor drive H/S – Hand Signaller Hz – Hertz HA – Highways Agency HABD – Hot Axle Box Detector I– I – HASAW – Health And Safety At Work

HAZCHEM – HAZardous CHEMical I/L – InterLocking

HAZID – HAZard IDentification IA – (1) Implementation Authority

HAZOP – HAZard OPerability study IA – (2) Investment Authority HAZPAK – training course for drivers of vehicles IAMS – Integrated Asset Management System carrying dangerous substances in packages IATC – Intermittent Automatic Train Control HCA – Historic Cost Accounting IBH – Intermediate Block Home Signal HEP – Head End Power IBIS – Internal Business Invoicing System: a former HEX – BR internal trading system

HFDG – Human Factors Development Group IBJ – Insulated Block Joint

HIP – Headquarters Investment Panel IC – (1) InterCity HL – (1) High Level IC – (2) Integrated Circuit

HL – (2) Home Location IC – (3) Investment Committee HLOS – High Level Output Statement IC – (4) Investment Controller

HM – Her Majesty’s ICAEW – Institute of Chartered Accountants of HMG – Her Majesty’s Government and

Page 8 of 22 LAAR Mark 24, February 2011

ICC – (1) International Convention Centre IORPS – Integrated Operational Railway Planning

ICC – (2) Infrastructure Control Centre System

ICDB – Industry Capacity DataBase IP – (1) Intellectual Property

ICE – (1) Institution of Civil Engineers IP – (2) Investment Proposal

ICE – (2) InterCity Express (Germany) IR – InfraRed

ICM – (1) Infrastructure Contracts Manager IRJ – Insulated Rail Joint

ICM – (2) Internal Communications Manager IRR – Internal Rate of Return

ICMU – Interference Current Monitoring Unit (on 3 IRSE – Institution of Engineers phase train) IS – (1) Information System IDC – (1) Insulation Displacement Connector IS – (2) Intermediate Signalling IDC – (2) Inter Disciplinary Check ISA – Independent Safety Assessor IDF – Intermediate Distribution Frame ISAR – Information Systems Activity Request IDMS – Integrated Document Management System ISDN – Integrated Services Digital Network IDS – Infrastructure Data Server ISG – Infrastructure Support Group IDT (ID&T) – Implementation, Development and ISM – IECC System Monitor

Training ISO – International Standards Organisation IÉ – Iarnród Éireann (Irish Rail) ISRS – International Safety Rating System

IEC – International Electrotechnical Commission ISTP – Intermediate Signalling Technology: IECC – Integrated Electronic Control Centre Principles IEE – (1) Institution of Engineering and Technology ISU – Infrastructure Services Unit IEE – (2) Institution of Electrical Engineers, now IET ISwA – Independent Software Assessor IEEE – Institute of Electrical and Electronics IT – Information Technology

Engineers (United States) ITA – Integrated Transport Authority IEP – Intercity Express Programme ITE – Institute of Transportation Engineers (United

IERS – International Environmental Rating System States)

IFC – Infrastructure Fault Control ITPM – IT Process Model

IFS – Independent Function Switch ITS – Infrastructure Testing Services

IGBT – Integrated Gate Bipolar Transistor ITT – Invitation To Tender IHHA – International Heavy Haul Association, USA ITU – International Telecommunications Union

IIP – Investors In People IVPS – Intermediate Voltage Power Supply ILGRI – International Railway Inspectors Group IVS† – Infrastructure Video System (Omnicom Ltd)

ILM – Railtrack Infrastructure Liability Manager IWA – Individual Working Alone

ILWS – Inductive Loop Warning System IZ – Inter Zonal: the transfer of costs between IM – Infrastructure Manager Business Units without cash IMACS – Inventory Management Accounting and IZPD – Inter–Zonal Possession Database Control System IMC – (1) Infrastructure Maintenance Company J– J – IMC – (2) Infrastructure Maintenance Contract IMC – (3) Infrastructure Maintenance Contractor J – Joule, international unit for energy (= Ws)

IMC2 – 2nd generation Infrastructure Maintenance JCN – Job Cost Number Contract JCN – IMCO – Infrastructure Maintenance COmpany JCT – Joint Construction Trades IMDG – International Maritime Dangerous Goods JD – Job Description Code Jernbaneverket – Norwegian railway infrastructure IMechE – Institution of Mechanical Engineers manager IMG – Infrastructure Materials Group JLE – Jubilee Line Extension IMPACT – Improved Manufacturing Performance JN (JC) – Junction Through Active Change and Training JS1 – basic signalling cable jointing and testing IMPS – Investment Monitoring and Planning System: JS2 – advanced signalling cable jointing and testing

the BR predecessor to PIPS JSOP – Joint Signing On Point

IMR – Interlocking Machine Room JTC – Jointless Track Circuit IMU – Infrastructure Maintenance Unit INLORS – INner London Orbital Route Strategy

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LMD – Light Maintenance Depot (for locos and K– K – stock) LN – Leeds Northern

KDC – Key Distribution Centre LNE(Z) – London North Eastern (Zone)

KE – Kinematic (or kinetic) Envelope LOA – Limit of Authority

km – kilometre, 1000 m LOP – Loss of Power

km/h – kilometre per hour LOROL – Railway Ltd.

KPI – Key Performance Indicator LOS – Limit Of Shunt indicator

kVA – kilovolt-Ampere LOWS – Lookout Operated Warning System LP – Local Processor L– L – LPA – Local Procurement Agent LPO – Local Process Owner L&B – Land and LPS – Local Policy Statement L/H – Leasehold LRM – Layout Risk Model L/S – (1) Late Start LRP – Local Reporting Pack L/S – (2) London Side LRPC – London Regional Passengers’ Committee LA – Local Authority LRT – Transit LAN – Local Area Network (for computer systems) LRV – Light Rail Vehicle LAWS – Low Adhesion Warning System LS – (Network Rail) Line Standard LB – Line Blocked LSB – Local Sensor LC – (1) Level Crossing LSC – Local Site Computer LC – (2) locally controlled manned level crossing LSPD – Local Safety Policy Document LC – (3) Line Clear LSS – London Shift Supplement LCC – Life Cycle Costing LT – London Transport LCAMS – Low Carbon Austenitic Manganese Steel RT LTA – (1) London Transport Authority

LCD – Liquid Crystal Display LTA – (2) Lost Time Accidents

LCP – Local Control Panel LTC – Long Term Charge

LCR – London and Continental Railways LTP – Local Transport Plans LCU – Local Control Unit LTS – (former) London, Tilbury and Southend railway, now C2C LD – (1) Light LU – London Underground LD – (2) Liquidated Damages LUL – London Underground Ltd LDDC – (former) London Docklands Development Corporation LV – (1) LiVerpool Street

LDG – List of Dangerous Goods (obsolete) LV – (2) Low Voltage

LDT – Long Distance Termination LVDT – Linear Variable Differential Transformer

LE – Light Engine (or Light Electric loco) LWR – Long Welded Rail LEB – London Electricity Board LWRT – Long Welded Rail Train

LEC – (former) London Electricity Contracting Ltd. LX (L/X) – level crossing LED – Light Emitting Diode M LEM – Local Estimating Manager – M –

LEU – Lineside Electronic Unit m – metre, international unit of length LFB – London Fire Brigade, now London Fire & M&E – Mechanical and Electrical

Civil Defence Authority M&EE – Mechanical & Electrical Engineer LGV – Ligne à Grande Vitesse: French high speed M&EE – Mechanical & Electrical Engineering line MA – Movement Authority LIFT – London International Freight Terminal MAF – Main Aspect Free LITM – Local IT Manager MAFF – Ministry of Agriculture Fisheries & Food LJU – Line Jack Unit MART – Mean Active Repair Time LL/H – Long Leasehold MAS – (1) Management Aspects of Supervision LLPA – Long Lead (Line) Public Address (Signalling & Telecomms)

LMA – Limit of Movement Authority MAS – (2) Multiple Aspect Signalling MATP – Manual ATP

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MB – (1) level crossing with Manually lifted Barriers MRT – (1) Minimum Rail Temperature MB – (2) MegaBit MRT – (2) Mass Rapid Transit MB/s – MegaBit per second MS – (1) Member State (of the EU) MBS – Motor Brake Second (or Standard) MS – (2) Method Statement MBO – Management Buy Out MSL – Level crossing with Miniature Stop Lights MBSS – Signalling System MSP – Measured Shovel Packing MCB – (1) Manually Controlled Barrier (of level MSS – Maximum Safe Speed crossing) MTBF – Mean Time Between Failures MCB – (2) Miniature Circuit Breaker MTBFF – Mean Time Between Functional Failures MCU – Main Control Unit MTBHE – Mean Time Between Hazardous Events

MDC – Management Driven Change MTBSAF – Mean Time Between Service Affecting MDF – (1) Medium Density Fibreboard Failures MDF – (2) Main Distribution Frame MTBWF – Mean Time Between Wrongside Failures MEAV – Modern Equivalent Asset Value MTL – Mersey Travel Ltd. MEBO – Management and Employee Buy Out MTP – Mode of Travel Priority MEF – Modern Equivalent Form MTR – Mass Transit Railway, MEP – Member of European Parliament MTRC – MassTransit Railway Corporation, Hong MEWP – Mobile Elevating Work Platform Kong

MGL – Multiple Groove Locking MTRT – Matisa Track Recording Trolley

MGR – Merry-Go-Round MTTR – Mean Time To Repair

MGT – Mega (Million) Gross Tonnes MTTRS – Mean Time To Restore Service

MHSW (MHSAW, MHSWR) – Management of MVB – Multifunctional Vehicle Bus Health and Safety at Work Regulations, 1992 MWL – Level crossing with Miniature red/green

MI – Mechanical Installation Practices Warning Lights

MICC – Management Information Communications MWO – Minor Works Order Centre (controls BTP operations South of MZ – Midland Zone (Lead Zone)

England) MZSA – Midland Zone Sponsor’s Agent

Mids – Midlands N MIP – Mobility Impaired Person – N – MIPS – Million Instructions Per Second N – Newton, international unit of Force [kg m / ss] MIS – Management Information System N&VMP – Noise and Vibration Management Plan MLF – Main Line Freight NAO – National Audit Office MLRI – Multi–Lamp Route Indicator NAPS – National Accounts Payable System: a former MM – Money Market BR system MMC – Monopolies and Mergers Commission NASG – National Applications Support Group MMIS – Maintenance Management Information NAT – Not Applicable Timetable System NATM – New Austrian Tunnelling Method MML – (1) Minimum Monetary Limit NBA – National radio network Base station MML – (2) Midland Main Line Alignment MOD – Ministry Of Defence NBV – Net Book Value MoP – Member of the Public NCC – National Control Centre MOS – (1) Mobile Operations Supervisor NCL – Northern MOS – (2) Motor Operated Switch NCR – Non-Conformance Report MP – (1) Major Projects NDA – Not Described Alarm MP – (2) MilePost NDE – Non-Destructive Evaluation MPD – Major Projects Division ( 2000, NDF – No Defect Found WCML, Crossrail etc.) NDM – Network Development Manager MPI – Magnetic Particle Inspection NDN – National Data Communications Network MPM – Multi Processor Module NDT – Non-Destructive Testing MPU – Motive Power Unit NEBOSH – National Examination Board in MPV – Multi Purpose Vehicle Occupational Safety & Health MRP – (1) Management Reporting Pack NEC – National Electrical Code (also known as MRP – (2) Monthly Reporting Pack NFPA 70)

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NEG – Group NTO – National Training Organisation NEM – National Estimating Manager NTP – North Trans–Pennine route NEMA – National Electrical Manufacturers NTPC – National Transaction Processing Centre: Association now known as the Shared Services Centre

NET – Nottingham Express Transit (SSC)

NFF – No Fault Found NTR – National Track Renewals

NFPA – National Fire Prevention Association NVQ – National Vocational Qualification

NG – Normal Grade NWR – Normal Working Resumed

NI – National Insurance NWT – North Western Trains

NIC – National Insurance Contributions NWZ – North West Zone

NIR – (1) National Incident Register NX – eNtrance – eXit (Signal Box Control Panel) NIR – (2) Northern Ireland Railways NLL – North London Line (North Woolwich– O– O – Richmond) O&I – Operations and Interface NLR – North London Railways O&M – Operation & Maintenance (manual) NMC – Network Management Centre O&SPA – Operational and Support hazard Analysis NMCSA – Network Management Centre Sponsor's Agent O/B – OverBridge NMS – Network Management Statement ÖBB – Österreichische Bundesbahnen

NMT – New Measurement Train OC – Open Crossing

NNTR – Notified National Technical Rule OCB – Oil Circuit Breaker NoBo – Notified Body OCC (or Occ) – (1) Occupied

NOL – Notice of Liability OCC – (2) Operations Control Centre

NPB – Non-powered OCL – Operational Communications Link

NPCCS – Non Passenger Carrying Coaching Stock OCS – (1) One Control Switch (signalling panel)

NPM – National Procurement Manager OCS – (2) Overhead Catenary System

NPMEA – National Planning Manager, Eng. Access OCU – Operator’s Control Unit

NPO – National Process Owner OD (od) – Outside Diameter

NPS – National Payroll System OE – Outside Edge

NPV – Net Present Value OEL – Occupational Exposure Limit

NPW – Normal Place of Work OETR – Outline Engineering Train Requirements NR – Network Rail OFN – Optical Fibre Network

NRA – (1) National Rivers Authority OHL –

NRA – (2) National Rail Academy (now RSC) OHLE – OverHead Line Equipment

NES – National Rail Enquiry Service OHNS – OverHead Line Neutral Section

NRG – National Records Group OJEC – Official Journal of the European Community

NRLS – Network Rail Line Standards OJEU – Official Journal of the European Union NRM – Nominated Responsible Manager OLBI – Off-line battery inverter (LUL)

NRN – National Radio Network OLC – Occupation Level Crossing

NRNA – National Radio Network Appreciation OLE – Overhead Line Equipment

NRS – National Railway Supplies (now UniPart) OLEAR – Overhead Line Equipment Asset Register NRSC – Network Rail railway Safety Case OLEMI – Overhead Line Equipment Master Index

NRV – National Reference Value OOG – Out Of Gauge

NS – Nederlande Spoorwegen OOO – Out Of Order NSA – National Safety Authority OOR – Out Of Round

NSC – National Supply Contract OOU – Out of Use

NSE – formerly Network South East OP – Outside Party

NSKT – No Signaller – Key Token OPEX – Operating EXpenditure

NSR – National Safety Rule OPM – Operational Planning Manager

NSTR – No Signaller – Token Remote OPO – One Person Operation

NTBEP – Not To Be Exceeded Price OPRAF – Office of Passenger RAil Franchising

NTN – National Teleprinter Network OPS – Outline Project Specification OPU – Operational Planning Unit

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OPUG – Other Passenger Upgrades PCB – (1) Printed Circuit Board ORE – Office de Recherches et d'Essais PCB – (2) PolyChlorinated Biphenyl, coolant / insul- ORN – Overlay Radio Network ant for transformers, toxic, PCB production OROR – Outside Rules Of the Route was banned in 2001

ORR – (1) Office of Rail Regulation PCB – (3) Petty Cash Book ORR – (2) Office of the Railway Regulator PCI – Positive Crew Identification

OS – Ordnance Survey PCM – (1) Production Control Manager OSG – Operation Safety Group PCM – (2) Project Control Manual OSGR – Ordnance Survey Grid Reference PCS&TE – Profit Centre Signal & Telecommunications Engineer OSI – Open Systems Interconnect PCSE(M) – Profit Centre Signal Engineer OTDR – Optical Time Domain Reflectometer (Maintenance) OTM – (1) On-Track Machine PCSE(W) – Profit Centre Signal Engineer (Works) OTM – (2) Overhead–Line Traction Maintenance PCTE – Profit Centre Telecommunications Engineer OTMR – On Train Monitoring Recorder PCV – Petty Cash Voucher OTP – On-Track Plant PD – Project Delivery OTW – One Train Working PDAC – Performance Data Accuracy Code PDFH – Passenger Demand Forecasting Handbook P– P – PDH – Plesiochronous Digital Hierarchy

P3 – Primavera Project Planner PDM – Project Development Manager

P – Programme PDMX – Programmable Digital Multiplexer

P&C – Points and Crossings: an alternative PDP – Personal Development Plan abbreviation for S&C PDS – Project Definition Stage P&E – Plant and Equipment PDT – Portable Data Terminal P&L – Profit and Loss PEA – Passenger Emergency Alarm (LUL) P&M – Plant & Machinery PEARLS – Personnel Enquiries and Administration

p.a. – per annum Recording Local System PEARS – Paladin data Extract And Recording P.Way (P–way) – see Pa – Pascal, international unit of pressure [N / m2] System PEDROUTE – Passenger flow modelling tool PA – (1) Public Address (System) PA – (2) Personal Assistant PER – Portable (relocatable) Equipment Room PESRCY – PassEnger Service Requirement PABS – Passenger track Access Billing System Compliance Yardstick PABX – Private Automatic Branch eXchange PETS – Public Emergency Telephone System PAC – Platform ATO Communicator PF – Passsenger Focus PACS – Public Affairs Correspondence System PFI – Private Finance Initiative PACT – PAved Concrete Track: a slab track system PFM – (1) Performance Focus Manager PADS – Parts And Drawing System PFM – (2) Projects Finance Manager PAF – Project Authority Form PFPI – Process For Performance Improvement PAL – Property Action Line PH – Professional Head PALADIN – Performance And Loading Analysis PHA – Preliminary Hazard Analysis Database INformation Phase 0 – Period of interim and full running of Virgin PAM – Product Acceptance Manager ATT at existing line speeds PAMX – PrivAte Manual branch eXchange Phase 1 – Period of full running on WCML at speeds PAT – Performance Action Tracking of up to 200 km/h between 2002 & 2005

PAX – Private Automatic Exchange Phase 2 – Full service after April 2005 at speeds of up

PAYE – Pay As You Earn (i.e., income tax) to speeds of 225 km/h PBI – Processor Based Interlocking PHIS – Performance Historical Information System

PBT – Profit Before Tax PI – Platform Indicator

PBX – Private Branch eXchange PIC – Person in Charge PC – (1) Personal Computer PICOP – Person In Charge Of Possession PC – (2) Protection Controller PICP – Pollution Incident Control Plan PIDS – Passenger Information Display System

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PIE – Performance Improvement Executive PRIDE – (1) Passenger Rail Information Display

PIM – Precursor Indicator Model Equipment PIMS – Programme Integrated Management System PRIDE – (2) Possession Resource Information PIO – Police Incident Officer DatabasE PIP – Property Investment Panel PRIMA – Professional Rail Industry Management Association PIPS – Packaging and Investment Planning System PRM – PRocurement Manager PIS – Passenger Information System PROCSYS – Procurement Control PIXC – Passengers In eXcess of Capacity (bespoke regime applied to commuter services) PROJEX – PROJect EXpenditure

pkm – passenger kilometres PROM – Programmable Read Only Memory PLC – Public Limited Company PROMISE – Planning and ResOurces MonItoring SystEm PLGS – Position Light Ground Signal PROMPT – PRiority On Managing Performance PLJI – Position Light Junction Indicator Trends PLOD – Patrolman's LockOut Device (Trackside PSB – Power Signal Box staff protection system) PSBR – Public Sector Borrowing Requirement PLRA – Private Locomotive Registration Agreement PSD – Platform Screen Door PLS – Position Light Signal PSM – Performance Strategy Manager PLUG – Pride Local User Group PSN – Packet Switched Network PM – (1) Production Manager PSO – Public Service Obligation PM – (2) Project Manager PSPP – Particular Specification for Possession PMBX – Private Manual Branch Exchange Planning PMCS – Project Management Control System PSR – (1) Permanent Speed Restriction PMI – Project Manager's Instruction PSR – (2) Public Service Requirement PMT – Project Management Team PSRG – Project Strategy Review Group PMUX – Panel MUltipleXer PSTN – Public Switched Telecommunications PNB – Personal Needs Break Network

PO – Purchase Order PT&R – Promotion Transfer & Redundancy

POA – Payment On Account PTA (see ITA) – Passenger Transport Authority POD – Point Of Derailment PTC – (US term) PoD – Probability of Detection PTE – Passenger Transport Executive

POM – Possession Optimisation Manager PTI – (1) Positive Train Identification

POMG – Police Incident Office PTI – (2) Platform Train Interface (LUL)

PON – Periodical Operating Notice PTM – Permanent Timetable Manager PORV – Possession Only Rail Vehicle PTO – Public Telecommunications Operator POSA – Proceed On Sight Authority PTS – Personal Track Safety

PP – Period available for Possessions PTW – Permit To Work

PPE – Personal Protective Equipment PUG1 & 2 – Passenger Up Grades 1&2 on (WCML)

PPG – Planning Policy Guidance PUWER – Provision and Use of Workplace

PPM – (1) Panel Processor Module Equipment Regulations 1992

PPM – (2) Planned Preventative Maintenance PVC – PolyVinyl Chloride

PPM – (3) Public Performance Measure PW – (1) Parallel Wing PPP – (1) Period Possession Plan PW – (2) Permanent Way

PPP – (2) Public Private Partnership PWay – Permanent Way (track, ballast etc)

PPTC – Powered Plant Training – Chainsaw PWI – Permanent Way Institution PPTD – Powered Plant Training – Disc Cutter And PWM – Pulse Width Modulation

Class 9 Cutting Of Wheels PWMA – Permanent Way Maintenance Assistant

PRB – Personalised Rule Book PWME – Permanent Way Maintenance Engineer PRDC – Princess Royal Distribution Centre (Royal PWRA – Private Wagon owners Registration Mail Railnet Hub at Willesden) Agreement

PRI – Preliminary Routing Indicator PWS – (1) Permanent Way Supervisor PWS – (2) Permanent Way Slack (slang term for TSR)

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PWSS – Permanent Way Section Supervisor RCM (2) – Remote Condition Monitoring 2 RCM – Combination of RCM (1) and RCM (2) Q– Q – RCS – Radio Control System RD – GEC time division multiplex, type RD QA – Quality Assurance RDN – Railtrack Director’s Nominee QAM – Quality Assurance Manager RDO – Relevant Delivery Organisation QM – Quality Manual RE – Resident Engineer QMS – Quality Management System REB – Relocatable Equipment QRA – Quantified Risk Analysis / Assessment RED – Railtrack Energy Database QRP – Quarterly Reporting Pack REFOS – Running Edge to Face Of Structure QS – Quantity Surveyor REG – Railtrack Executive Group QX – Qualifying eXceptions REN – Ringer Equivalence Number, unit of load for telephone ringers R– R – RENFE - Red Nacional de los Ferrocarriles Españoles R&PA – Route and Programme Analyst Renlog – infrastructure renewals log R&R – Rationalisation and Resignalling REPTA – Railway Employees Privilege Ticket R(SCW)R – Railway (Safety Critical Work) Association Regulations 1994 RES – (now part of DB Schen- R/G – level crossing with miniature Red & Green ker) warning lights RETB – Radio Electronic Token Block R/T – Right Time RF – Radio Frequency R3G – RAIB Recommendation Review Group RfD (RFD) – (DB Schenker) RA – (1) Radio Agency RFF – Réseau Ferré de France (French infrastructure RA – (2) Reporting Accountant manager) RA – (3) Right Away platform indicator RFI – Rete Ferroviaria Italiana (Italian Infrastructure RA – (4) Route Availability Manager)

RAB – Regulatory Asset Base RfL – Rail for London RAC – Risk Assessment Criteria RGS – Railway Group Standard

RAFS – RAil Freight billing System RGSP – Railway Group Safety Plan

RAI – Right Away Indicator RHA – Road Haulage Association RAIB – Railway Accident Investigation Branch RHS – Rectangular Hollow Section RAILTEL – RAILway TELephone project RHT – Railway Heritage Trust RAM – (1) Random Access Memory RI – Relay Interlocking RAM – (2) Reliability, Availability, Maintainability RIA – Railway Industry Association RAMS – Reliability, Availability, Maintainability and RIAC – Railway Industry Advisory Committee Safety RIC – (1) Rail Incident Commander

RAP – Remedial Action Project RIC – (2) Regolamento Internazionale Carrozze

RAR – Railtrack Asset Register (Regulations for the international exchange of RBC – Radio Block Centre passenger carriages) RC – (1) Reinforced Concrete RICA – Regional Independent Commercial Auditor

RC – (2) Remote Control (SRP)

RC – (3) Remotely Controlled (Level Crossing) RICP – Rail Incident Control Post RC – (4) Return Conductor RID – Regulations governing International carriage

RCC – Route Control Centre of Dangerous goods by rail RCD – Residual Current Device RIDDOR '95 – Reporting of Injuries, Disease and Dangerous Occurrences Regulations 1995 RCDO – Railway Crossing Diversion Order RIDRR – Railway Industry Dispute Resolution Rules RCE – Regional Civil Engineer (see also CAHA) RCF – Rolling Contact Fatigue RIFAA – Rail Industry First Aid Association RCH – Railway Convalescent Home RIG – Railway Industry Group RCI – Railtrack Controlled Infrastructure RII – Relay Interlocking Interface RCL – Railway Claims Ltd RIL – Railtrack Insurance Ltd. RCM – Reliability Centred Maintenance (1) RIO – Rail Incident Officer

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RIP – (former) Railtrack Investment Panel RRI – Route Relay Interlocking RIPM – Railtrack Investment Prioritisation Model RRIP – Route Relay Interlocking Processor RIR – Railways Interoperability Regulations RRNE – North East RISC – Reduced Instruction Set Computer RRNW – Regional Railways North West RISSC – Railway Industry Safety Strategy Comittee RRV – Road Rail Vehicle RITC – Railway Industry Training Council RS – (former) Railway Safety RITS – Rail Infrastructure Transport System RSA – Railway Study Association RIV – Regolamento Internazionale Vagoni RSAB – Rolling Stock Acceptance Board (regulations governing the international RSABGP – RSAB Group which provides support to

exchange of railway freight wagons) RSAB and projects

RJIS – Rail Journey Information System RSAG – Railway Safety Advisory Group

RL – Relief Line (see also Slow Line) RSBS – Railway Standard Building Specification

RLE – Rail Link Engineering RSC – (1) Railway Skills Council (Sector Skills RM – Route Modernisation Council for the Railway Industry) RMG – Railtrack Management Group RSC – (2) Railway Safety Case RMMM – Rail Mounted Maintenance Machine RSCI – Real Staff Cost Increase RMPD – Route Modernisation Product Delivery RSF – Right Side Failure RMS – (1) Risk Management System RSL – Rolling Stock Library RMS – (2) Root Mean Square RSPG – Railway Safety Principles & Guidance RMT – national union of Rail, Maritime and RSRS – Railtrack Safety Rating System

Transport Workers RSSB – Rail Safety and Standards Board RNA – Railway Notification of Accidents RSSP – Railway Strategic Safety Plan

Regulations RSTL – Rail Staff Travel Ltd (Travel Facilities:

RO – Rail Operator Pensions Management Ltd 1/2/97)

ROA – Right On Arrival RT – (1) Radiographic Testing

ROAD – Railway jargon for railway line RT – (2) RailTrack

ROCE – Return On Capital Employed RT1A – Railtrack Infrastructure Maintenance ROGS – Railways and Other Guided Transport Contract Systems (Safety) Regulations 2006 (supersede RT1B – Railtrack Track Renewal Contract +

ROTS) RTA – Road Traffic Accident ROI – Return On Investment RTAC – RailTrack Access Conditions ROM – Read Only Memory RTFN – RailTrack Fault Number

ROM – Regional Operating Manager RTG – RailTrack Group PLC ROP – Rules Of the Plan RTHQ – RailTrack Headquarters

ROR – Rules of the Route RTIS – RailTrack Information Systems

ROS – Restriction of Speed RTLS – RailTrack Line Standard

ROSCO – ROlling Stock leasing COmpany RTLs – Road Traffic Lights ROSIN – Railway Open System Interconnection RTMZ – RailTrack Midlands Zon Network (a European Project) RTP – Real Time Protocols ROTP – Rules Of The Plan RTPI – Real Time Passenger Information system ROTR – Rules Of The Route (based on [GPS] transmissions) ROTS – Railways and Other Transport Systems RTS – Rapid Transit System (Approval of Works, Plant and Equipment) RTU – Remote Terminal Unit Regulations 1994 (superseded by ROGS) RUCC – Rail Users’ Consultative Committee(s): ROW – Renewal Of Way formerly the Transport Users’ Consultative RPI – (1) Retail Price Index Committee(s)

RPI – (2) Revenue Protection Inspector RUPP – (former) Road Used as a Public Path RPL – (formerly) Rail Property Ltd.: a subsidiary of RX – Receiver (of Track Circuits and Communi- the British Railways Board cations Links) RPM – Route Performance Manager (organisation

pre 24/02/97) S– S – RPPS – Rail Passenger Partnership Scheme RPS – Radio Propagation System S&C – Switches & Crossings RRD – Rolling Radius Difference

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S&F – Switches & Fittings SFT – Stress Free Temperature S&SD – (1) Railtrack’s Safety and Standards SG – Special Ground Directorate SGT – Gauging Train

S&SD – (2) Systems and Safety Department SHA – Safety Hazard Analysis

S&SM – Safety and Standards Manager SHRT – South Hampshire Rapid Transit

S&T – Signalling and Telecommunications SI – Site Instruction

S&TE – Signal and Telecommunications Engineer SIC – System Interface Committee

S.L/H – Short LeaseHold SICA – Signalling Infrastructure Condition SA – (1) Safety Authority Assessment SA – (2) Signalling Assistant SIGTAN – SIGnalling equipment Technical Advice

SA – (3) Sponsor’s Agent Notice SAA – Station Access Agreement SIGWEN – SIGnalling equipment Workshop

SAC – Station Access Conditions Engineering Notice

SAE – Society of Automotive Engineers SIL – Safety Integrity Level

SAM – Switch Activating Mechanism SIMBIDS – SIMplified BI–Directional Signalling SAP – Safety Assessment Panel SIMS – Safety Incident Management System

SAT – Site Acceptance Test SIN – (1) Site Instruction Notice

SB – Signal Box SIN – (2) Special Inspection Notice SBB – Schweizerische Bundesbahnen SIN – (3) Special Instruction Notice SC – Signalling Centre SIN – (4) Substance Identification Number

SCADA – Supervisory Control And Data Acquisition SINAC – Special Inspection Notice Action Complete

SCC – (1) Supervisory Control Centre SINCS – SIgnalling INCident System

SCC – (2) Supplier Creation Co-ordinator SINMON – Special Inspection Notice MONitor

Schedule 4 – The possession–planning regime SIP – Strike-In Point Schedule 8 – The performance regime with TOCs SIPS – (1) Supplier Performance Monitoring System SCHLID – SCHeduLe IDentity: TOPS term for a SIPS – (2) Standard Infrastructure Performance train schedule System (Civil Engineering equivalent of PEARS) SCI – Standard Contract Interpretation SIS – Staff Information System SCM – Senior Contracts Manager SITS – Security Incident Tracking System Scot (SCOT) – SIVS – Station Inspector Viewing System SCS – System SK – Second Korridor SCU – Signalling Compatibility Unit SLA – Service Level Agreement SCUK – Signalling Controls UK Ltd, now part of Westinghouse Signals Ltd SLE – Sleeper (coach) SCW – Safety Critical Work SLEP - Sleeper (coach) with Pantry

SD – (1) Standard Deviation SLOA – Operators Association

SD – (2) Sand Drag SLU – Standard Length Unit

SDA – (1) Solid state interlocking Data Appreciation SLW – Single Line Working

SDA – (2) Strategy, Design and Architecture group, SMA – (1) Signalling Maintenance Assistant

an RTIS body SMA – (2) Single Manning Agreement

SDDR – Short distance data recorder SMA – (3) Statistical Multiplexer Appreciation SDH – Synchronous Digital Hierarchy SMA – (4) Strathclyde Manning Agreement SDR – Simplified Direct Reporting SMART – (1) Specific, Measurable, Achievable,

SDS – Signalman's Display System Realistic, Timebased SDT – Service Disruption Threshold SMART – (2) Signal Monitoring And Reporting to TRUST SEC – Southern Electric Company SMC – System Management Centre SEE – Systems Engineering Environment SME – Signalling Maintenance Engineer SER – Signalling Equipment Room SMFD – Systems Management Framework Design SETA – Signalling Equipment Technical Agent SMG – Systems Management Group SEU – Signalling Equivalent Units SMIC – Site Manager’s Information Compendium SFAIRP – So Far As Is Reasonably Practicable SMIS – Safety Management Information System SFO – (1) Senior Fire Officer SMOS – Structure Mounted Outdoor Switchgear SFO – (2) Station Facility Owner

Page 17 of 22 LAAR Mark 24, February 2011

SMS – (1) Station Management System SSI – Solid State Interlocking SMS – (2) Signal Maintenance Standard SSIC – Solid State Interlocking Controller SMS – (3) Safety Management System SSIDES – Solid State Interlocking DESign SMT – Signalling Maintenance Testing SSIDWS – Solid State Interlocking Design

SMTH – Signal Maintenance Tester’s Handbook WorkstationS

SNCB – Société Nationale des Chemins de Fer SSIHA – SubSystem Interface Hazard Analysis Belges: Belgian national railways SSISIM – Solid State Interlocking SIMulator SNCF – Société Nationale des Chemins de Fer SSM – Safety Strategy Manager

Français: French national railways SSn-FTA – Subsystem Fault Tree Analysis SO – Second (or Standard) Open SSO – Special Stop Order

SOCO – Scene Of Crime Officer SSP – (1) Signalling Supply Point

SODA – Single Option Development Authority SSP – (2) Standard Signalling Principle

SOWC – Shows Occupied When Clear SSP – (3) System Safety Plan

SP – Single Phase SSR – (1) Spread Spectrum Radio

SP&SN – Single Phase and Switched Neutral SSR – (2) System Safety Report

SPA – Special Protected Area SSRA – Shadow Strategic Rail Authority

SPAD – Signal PAssed at Danger SSRB – Special Speed Restriction Board SPADMIS – Signal Passed At Danger throughout SSSI – Site of Special Scientific Interest

Information System SSTD – Solid State Train Describer

SPADRAM – SPAD Reduction & Mitigation SSW – Safe System of Work SpAg – Sponsor’s Agent STA – Supplementary Track Access (Agreement) SPC – Senior Production Controller STABS – Signalling and Telecommunications Area SPI – Safety Performance Indicator Budget System SPM – Senior Project Manager STAR – Signalling & Telecommunications Asset SPOC – Single Point Of Contact Register SPT – (1) Signal Post Telephone STEP – Safety, Teamwork, Excellence,

SPT – (2) Strathclyde Partnership for Transport Professionalism

SPTA – Strathclyde Passenger Transport Authority STN – Special Traffic Notice

SPV – Special Purpose Vehicle (Project STO – Senior Technical Officer Management) STOPS – Signalling and Telecommunications

SPWEE – Safety Procedures for Working on Outturn Processing System Electrical Equipment STP – Short Term Planning: one–off bids for train

SQE – Safety, Quality and Environment paths (see also Spot Bids)

SQL – Structured Query Language SVP – Safety Verification Plan

SR – ScotRail SW – Software

SRA – Strategic Rail Authority SWA (swa) – Steel Wire Armoured (cable) SRG – Safety Review Group Swap Body – a system for conveying road freight SRI – Signalling Restructuring Initiative vehicle bodies on rail vehicles SRP – (1) Station Regeneration Programme SWELTRAC – South WEst London TRAnsport Conference SRP – (2) Statutory Reporting Pack SWIFT – Structured ‘What IF?’ Technique: a process SRP – (3) System Review Panel for assessing level of safety risk SRP – (4) Safety Review Panel SWIMCo – formerly South West Iinfrastructure SRPTA –SRP Secretariat Technical Advisor Maintenance Company, then AMEC Rail

SRS – Safety Responsibility Statement SWOT – Strengths, Weaknesses, Opportunities and

SRT – Sectional Running Time Threats analysis

SSA – Station Specific Annexe SWT – SSAP – Statement of Standard Accounting Practice SWTH – Signalling Works Testing Handbook

SSDC – Signalling Systems Direct Current SYITA – South Yorkshire Integrated Transport SSG – Safety Strategy Group Authority SSG – (1) Standards Steering Group SYITE –South Yorkshire Integrated Transport

SSG – (2) Systems Strategy Group (for Information Executive Systems projects) SYPTE – formerly South Yorkshire Passenger

SSHA – SubSystem Hazard Analysis Transport Executive

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SZ – Scotland Zone TEN – Trans–European Network TENS – Trans European Network Strategy T– T – TESCO – TEchnical Service COmpany TEU – Twenty Foot Equivalent Unit (container T&H – Tottenham & Hampstead (Barking–Gospel length) Oak Junction) TF – Trailer First T&RS – Traction & Rolling Stock TfL – Transport for London T&V – Trespass & Vandalism TFM – Trackside Functional Module TAA – Track Access Agreement TGM – Transport Gateway Metro (services proposed TAC – Telecomms Appreciation Course for the Woolwich Rail Tunnel)

TADS – Telecommunications Asset Database System TGV – Train á Grande Vitesse: French high speed TAG – Track Access Grant train TAN – Track Access Notice TIC – (1) Technical Investigation Centre TARDIS – TOPS Ancillary Retrospective Data TIC – (2) Tester In Charge

Information Service TIC – (3) Track Inspection Coach TAS – Technical Assurance Strategy TID – Track IDentity TASS – Tilt Authorisation & Speed Supervision TIIS – Train Infrastructure Interface Specification TB – (1) Token(less) Block TIMI – TelecommunIcations Maintenance Instruction TB – (2) Trial Balance TIPS – Telecommunications Installation and TBA – To Be Advised Procurement Service TBE – To Be Evaluated TIR – Internationaux Routiers TBS – Transmission Based Signalling TIS – (1) Track Isolating Switch TBTC – Transmission Based Train Control TIS – (2) Train Information System TBW – Temporary Block Working TIS – (3) Traction Interlock Switch TC – (1) Track Circuit TIS – (4) Traction Isolation Switch TC – (2) Trailer Composite tkm – tonne kilometres TCA – Track Circuit Actuator TL – Through Line TCAID – Track Circuit Actuator Interference TL2000 – ThamesLink 2000

Detector TLC – Telephone protection only Level Crossing

TCB – Track Circuit Block TMD – (1) Traction Maintenance Depot

TCF – Track Circuit Failure TMD – (2) Train Mass Detector TCI – (1) Track Circuit Interrupter TMO – Train crew Manually Operated level crossing TCI – (2) Transportation Consultants International TMP – Traffic Management Plan TCIC – TripCock Isolating Cock (LUL) TMS – Traffic Management System

TCM – Time Cycle Maintenance TNA – Training Needs Analysis

TCN – Train Communications Network TNM – Train Network Management TCOC – Track Circuit Operating Clip TO – (1) Team Organiser

TCOD – Track Circuit Operating Device TO – (2) Technical Officer TCP/IP – Transmission Control Protocol / Internet TO – (3) Transport Operator Protocol TOC – (1) Train Operating Company TCS – (1) Traffic Control System TOC – (2) Test On Completion TCS – (2) Train Control System TOHD – TOPS Operations Help Desk TCS – (3) Train Crew Supervisor. TOL – Train On Line TD – Train Describer TOOS – Taken Out Of Service TDA – TRUST Delay Attribution TOPS – Total Operations Processing System TD–D – Data Course (Training) TOR – Top of rail TDM – Time Division Multiplex TORR – Train Operated Route Release TDMA – Time Division Multiple Access protocol TORUS – TransportOperations Rapid Update System TDMS – Title Deeds Management System TOU – Train Operating Unit TDS – Train Diagnostic System TOWS – Train Operated Warning System TD–T – Transmission Course (Training) TP&SN – Three Phase and Switched Neutral: type of TE – Zone Telecommunications Engineer low voltage switch gear

TEB – Telephone Enquiry Bureaux TPH – Trains per Hour

Page 19 of 22 LAAR Mark 24, February 2011

TPC – Trackside Processing Centre TX – Transmitter (in track circuits and communi-

TPC – Train Performance Calculator cations Links) TPO – TPPP – Transport Policies and Programme Package U– U –

(Central Government funding) UB – (1) UnderBridge TPS – Traction Power Supply UB – (2) Universal Beam TPT – Train Positioning and Tracking UEL – Up Electric Line TRUB – Trailer Restaurant Unclassified Buffet UFL – Up Fast Line TRUK – Trailer Restaurant Unclassified Kitchen UFN – Until Further Notice TPWS – Train Protection and Warning System UGL – Up Goods Line or Up Goods Loop TPWS+ – Train Protection and Warning System Plus for operation at speeds above 70mph UIC – Union Internationale des Chemins de Fer (international union of railways) TPWS-E – Train Protection and Warning System based on technology UM (UML) – Up Main (Line)

TPWSSA – TPWS Sponsor's Agent UPL – Up Platform Line or Up Passenger Loop

TQ – Technical Query UPS – Uninterruptible Power Supply

TQI – Track Quality Index UPWSF – UnProtected Wrong Side Failure

TQSUM – Track Quality SUMmary URFD – Ultrasonic Rail Flaw Detection TRACA – TRAck Condition Assessment URFDO – Ultrasonic Rail Flaw Detector Operator

TRAMM – Track Renewal And Maintenance URL – Up Relief Line Machine URS – Up Refuge Siding TRB – (1) Train Recording Book USA – Urgent Safety Advices TRB – (2) Transportation Research Board (United USL – Up Slow Line States) UT – Ultrasonic Testing TRC – (1) Track Recording Coach UTS – Ultrasonic Testing System TRC – (2) Track Renewals Company , UTU – Ultrasonic Test Unit TRE – Track Recording Engineer UTX – Under Track Crossing TRS – (1) Train Ready to Start UWC – User Worked Crossing TRS – (2) Train Reporting System UWG – public road crossing with User Worked Gates TRTS – Train Ready To Start indicator UWSF – Unprotected Wrong Side Failure TRU – (1) Track Recording Unit UWTF – Unprotected Wrongside Telecommunica- TRU – (2) Track Renewal Unit tions Failure TRUST – Train RUnning Systems on TOPS TRV – Track Recording Vehicle V– V – TS – Trailer Second VAB – Vehicle Acceptance Board TS&I – Technical Services and Innovation VAL – Validation Action Label TSC – (1) Track Sectioning Cabin VAMPIRE – Vehicle dynAmic Modelling Package in TSC – (2) Train Service Code a Railway Environment TSDB – Train Service Data Base VAT – Value Added Tax TSI – Technical Specification for Interoperability VATT – Virgin Active Tilt Trains TSO – Trailer Second Open VCB – Vacuum Circuit Breaker TSR – Temporary Speed Restriction VCC – Virgin Cross Country TSSA – Transport Salaried Staffs’ Association VCU – Vehicle Control Unit TSSU – Time Slot Sharing Unit VDP – Vertical Design Package TT – Time Table VDU – Visual Display Unit, for computers TTP – Time Table Processor VDV – Vibration Dose Value TU – Transport Undertaking VLR – Visitors Location Register TUPE – Transfer of Undertakings (Protection of VM – Value Management Employment Regulations 1981) VNCAB – Vehicle and Network Change Approvals TVM – Transmission Voie Machine, French ATP Board TWA – Transport & Works Act VO – Variation Order TWE – Track Welding Engineer VOBC – Vehicle OnBoard Control / Computer TWO – Transport and Works Order

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VPF (VOPF) – Value of Preventing a Fatality WON – Weekly Operating Notice

criterion WPI – Wholesale Price Index

VPI – Vital Processor Interlocking WRISA – Wheel Rail System Interface Authority

VRAC – Vehicle and Route Acceptance Contract WR SSTD – Western Region Solid State Train VRG – Describer

VSTP – Very Short Term Plan WRSL – Westinghouse Rail Systems Ltd. VT – WSF – (1) Wrong Side Failure VTI – Vehicle Track Interaction WSF – (2) Wrong side Signalling Failure V/T-SIC – Vehicle / Track Systems Interface WSL – formerly Westinghouse Signals Ltd Committee WSO – Work Station Operator VTISM – Vehilce Track Interaction Strategic Model WSP – Wheel Slip Protection V/V-SIC – Vehicle / Vehicle Systems Interface WTB – Wire Train Bus Committee WTF – Wrong side Telecommunications Failure

VWC – Virgin West Coast WTT – Working Time Table WW – Wales and West Passenger Trains W– W – WWW – World Wide Web W – Watt (electrical unit) WYITA – West Yorkshire Integrated Transport Authority W/m – Watt per metre (heat loss unit) 2 WYITE –West Yorkshire Integrated Transport W/m – Watt per metre squared (heat flow unit) Executive W/S – Work Station WYPTA – formerly West Yorkshire Passenger WA – West Anglia Lines (Liverpool Street to Transport Authority Cambridge & Local Branches) WYPTE – formerly West Yorkshire Passenger WACC – Weighted Average Cost of Capital Transport Executive

WAGN – West Anglia Great Northern WYSIWYG – What You See Is What You Get WAN – Wide Area Network WARC – West Anglia Route Controller X– X – WARM – West Anglia Route Modernisation

WARP – West Coast Advanced Recovery Reliability XCT – Cross Country Trains Programme XLPE – Cross-Linked PolyEthylene WBS – Work Breakdown Structure WCML – Y– Y –

WCML RM – West Coast Main Line Route Modernisation YB2 – Yellow Book issue 2 (ESM)

WCRM – West Coast Route Modernisation YB3 – Yellow Book issue 3 (ESM)

WEN – Weekly Engineering Notice YTD – Year To Date WESTRACE – WESTinghouse Radio Advanced Control Equipment Z– Z – WI – Warning Indicator ZCAM – Zonal Corporate Affairs Manager WI – Work Instruction ZCRG – Zonal Commercial Review Group WILD – Wheel Impact Load Detector ZD – Zone Director WIP – Works In Progress ZEPE – Zone Electrical and Plant Engineer WLC – Whole Life Cost ZFC – Zone Freight Controller WLL – ZIAR – Zone Infrastructure Asset Register WLRM – Whole Life Rail Model ZIP – Zone Investment Panel WMITA – West Midlands Integrated Transport Authority ZOC – Zone Operational Control

WMITE – West Midlands Integrated Transport ZPAM – Zonal Public Affairs Manager

Executive ZPUG – Zonal Possession User Group WMP – Waste Management Plan ZTE – Zone Telecommunications Engineer WMPTA – formerly West Midlands Passenger Transport Authority WMPTE – formerly West Midlands Passenger Transport Executive

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