Railway Technical Web Pages

Introduction

This list was originally produced by the Railway Systems Group at the University of Sheffield in co-operation with Railtrack and other organisations.  Experts at the University of Sheffield now update the list on a regular basis.  Obsolete Railtrack terminology is shown in brackets where known.  This is version 15 of this document.

The underlined tag at the end of an entry "RT" signifies definition contributed by Railtrack, "RailCons" signifies that a definition was contributed by The Railway Consultancy Ltd, "UoS" signifies a definition contributed by The University of Sheffield.  Comments and feedback are welcomed by: f.schmid@shef.ac.uk

Further information is available at:
Modern Railway Terminology - The Brakes Glossary - The Steam Locomotive Glossary - The Electric Traction Glossary - US-UK Terminology and the UK Railway Lexicon

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A...

AAR – American Association of Railroads ^UoS

AB – Absolute Block^RT

ABC – Automatic Ballast Cleaner^RT
ABCL – Automatic Barrier level Crossing Locally monitored by train crew^RT
AC (ac) – Alternating Current^RT
ACCOLC – ACCess OverLoad Control^RT
ACE – Area Civil Engineer^RT
ACIO – Assistant Chief Inspecting Officer (of Railways)^RT
ACM – (1) Area Consents Manager, (2) Area Contracts Manager^RT
ACOP – Approved Code of Practice^RT
ACORP – Association of Community Rail Partnerships
ACT – Advanced Corporation Tax^RT
ACWP – Actual Cost of Work Performed^RT
AD&R – Asset Development and Renewal^RT
ADD – Automatic Dropping Device^RT
ADG – Area Delivery Group^RT
ADR – regulations concerning the International Carriage of Dangerous Goods by Road^RT
ADRC – Access Dispute Resolution Committee^RT
AE – Account Executive^RT
AEA – Atomic Energy Authority^RT
AEAT – AEA Technology plc.^RT
AEAT Rail – The Former British Rail Research^RT
AEEU – Amalgamated Electrical Engineering Union^RT
AEM – Area Environmental Manager^RT
AF – (1) Auxiliary Feeder, (2) Audio Frequency^RT
AFC – (1) Anticipated Final Cost, (2) Approved for Construction^RT
AFD – Automatic Fire Detection^RT
AFFF – Aqueous Film Forming Foam (used in fire extinguishers)^RT
AGT – Automatic Guideway Transit^UoS
AHB – Automatic Half Barrier level crossing^RT
AHBC – Automatic Half Barrier Crossing^RT
AHBLC – Automatic Half Barrier Level Crossing^RT
AHQ – British Transport Police Area Headquarters^RT
AIM – Asset Information Manager^RT
AIP – (1) Approval In Principle, (2) Area Investment Panel^RT
ALARP – As Low As Reasonably Practicable^RT
ALC – (1) Automatic Lining Control ^RT, (2) Accommodation Level Crossing^RT
ALG – Association of London Government^RT
ALRMS – Access Level crossing Risk Management System^RT
AM – Amplitude Modulation^UoS
AMP – (1) Asset Maintenance Programme, (2) Asset Management Plan^RT
AMS – Austenitic Manganese Steel^RT
AMU – Access Management Unit^RT
ANSI – American National Standards Institute^UoS
AOCL – Automatic Open level Crossing Locally monitored by train crew^RT
AOCR – Automatic Open level Crossing Remotely monitored^RT
AP – Accounts Payable ^RT
AP TDM – AP Electronics, Time Division Multiplex^RT
APC – Automatic Power Control^RT
API – Applications Interface ^UoS
APLAN – track Access PLANning system^RT
APM – (1) Area Production Manager, (2) Assistant Project Manager^RT
APP – Annual Possession Plan^RT
APT – Advanced Passenger Train^RT
AQL – Acceptable Quality Level^RT
AR – (1) Anglia Railways Train Services, (2) Accounts Receivable^RT
AREA – or AREMA American Rail Engineers and Maintenance Association^UoS
ARI – Alphanumeric Route Indicator ^RT
ARPS – Association of Railway Preservation Societies^RT
ARRC – Advanced Railway Research Centre ^UoS
ARS – Automatic Route Setting^RT
ARTP – Association of Rail Training Providers^RT
ASAP – As Soon As Possible^RT
ASB – (1) AS Built, (2) Adjacent SignalBox^RT
ASBPC – Adjacent SignalBox Protocol Converter^RT
ASLEF – Associated Society of Locomotive Engineers and Firemen.^RT
ASPER – ASset PERformance database^RT
AT – Auto Transformer^RT
ATA – Automatic Track Alignment ^RT
ATC – Automatic Train Control^RT
ATCO – Association of Transport Co-ordinating Offices^RT
ATM – Amended Timetable Manager^RT
ATO – Automatic Train Operation^RT
ATOC – Association of Train Operating Companies^RT
ATP – Automatic Train Protection^RT
ATPM – Automatic Train Protection Manual ^UoS
ATR – (1) Automatic Train Reporting, (2) Automatic Train Regulation^UoS
ATS – (1) Automatic Train Supervision, (2) Automatic Train Stop ^{UoS ,} (3) Applicable Timetable Service^RT
ATT – Active Tilting Train^RT
ATTA – Automatic Track Top and Alignment^RT
AVACS – Aire VAlley Control System^RT
AVB – Automatic Vacuum Brake^RT
AVI – Automatic Vehicle Identification^RT
AWB – Advance Warning Board^RT
AWE – Advance Warning Estimates^RT
AWG – Adhesion Working Group^RT
AWS – (1) Automatic Warning System, (2) Auxiliary Wayside System ^RT
 

B...

BAA – British Airports Authority^RT
BABT – British Approved Board for Telecommunications^RT
BACS – Bank Automated System ^RT
BATS – Business Analysis of Train Services^RT
BBRM – Balfour Beatty Rail Maintenance Limited (formerly SIE)^RT
BBRPL – Balfour Beatty Rail Projects Limited^RT
BBRR – Balfour Beatty Rail Renewals ^RT
BCA – Business Critical Application (IT term)^RT
BCC – Banking Control Account^RT
BCWS – Budgeted Cost of Work Scheduled^RT
BDM – (1) Business Development Manager, (2) Business Development Manual^RT
BH–RAIL – Bull Head RAIL Section^RT
BHX – Bank Holiday eXcepted^RT
BIFS – Billing Infrastructure Freight System ^RT
BMS – Basic Mechanical Signalling ^RT
BMIS – Business Management Information System
BNC – British National Connector^UoS
BOP – Booking On Point^RT
BP – (1) Brake Pipe , (2) British Petroleum , (3) Business Plan^RT
BPA – (1) Business Planning Accountant , (2) Business Planning Analysis^RT
BPM – Business Process Manual^RT
BPR – Business Policy Review group: an RTIS body^RT
BR – (1) (former) British Railways, (2) (former) British Rail^RailCons
BRASS – British Railways Additional Superannuation Scheme^RT
BRB – British Railways Board^RT
BRBS – British Railways Business Systems (former BR equivalent of RTIS)^RT
BRENDA – BRidge ENgineer Data, computer system ^RT
BRG – Business Review Group^RT
BRI – British Rail International^RT
BRIMS – British Rail Incident Monitoring System^RT
BRIS – (former) British Rail Infrastructure Services^UoS
BRP – Budget Reporting Pack
BRR – (former) British Rail Research^RT
BRS – Business Route Section^RT
BRSA – British Rail Staff Association^RT
BRT – British Rail Telecommunications^RT , now known as RACAL^UoS
BS – British Standard ^RT
BSC – Base Station Controller ^UoS
BS spec – British Standards specification ^RT
BS&TE – Business Signal & Telecommunications Engineer ^RT
BSN – Bridge Strike Nominee (see Bridge Bash/Strike) ^RT
BSP – Bulk Supply Point^RT
BSPG – Business Systems Policy Group: an RTIS authorising body^RT
BST – (1) Basic Signalling Technology,, (2) British Summer Time^RT
BT – Booster Transformer^RT
BTA – British Transport Advertising^RT
BTOG – British Transport Officers’ Guild^RT (alternative union for managers and executives)
BTP – British Transport Police^RT
BZP – Bright Zinc Plating^RT
 

C...

C&W – Carriage and Wagon^RT
C/E – Country End^RT
CA – (1) CAble, (2) Commercial Assistant, (3) Cash Accounts^RT
CAD – Computer Aided Design^RT
CAG – Contract Approval Group ^RT
CAHA – Claims Allocation and Handling Agreement ( see also RIDRR) ^RT
CAMPS – Computer Assisted Maintenance Planning System^RT
CAMS – Cost Allocation Management System^RT
CAPE – Train Cancelled (derived from former Telegraph Code^RT)
CAPEX – CAPital EXpenditure – funds spent on fixed assets^RT
CAPM – Capital Asset Pricing Model^RT
CAPP – Confirmed Annual Possession Plan^RT
CAPS – Colchester Area Power Supplies^RT
CAR – Corrective Action Request^RT
CARINO – TOPS (Total Operations Processing System) wagon number ^RT
CARKND – TOPS (Total Operations Processing System) wagon type^RT
CAT – Cable Avoiding Tool^RT
CATE – Computer Assisted Train Enquiries^RT
CB – (1) Central Battery, (2) Circuit Breaker^UoS
CBCT – Communications Based Train Control ^UoS
CBI – Confederation of British Industry^RT
CBS – Contract Breakdown Structure^RT
CCA – Current Cost Accounting^RT
CCF – Control Centre of the Future^RT
CCI – Confirmation of Client's Instruction^RT
CCM – Company Control Manager (EWS)^RT
CCS – Contract Conditions – Safety^RT
CCSC – Contractor Core Safety Case
CCTV – Closed Circuit TeleVision^RT
CCU – Core Control Unit^RT
CD – Close Doors platform indicator^RT
CD ROM – Compact Disc Read Only Memory^RT
CDL – Central Door Locking^RT
CDM – (1) The Construction (Design and Management) Regulations 1994, (2) Control Duty Manager^RT
CDMA – Collision Detection Multiple Access^UoS
CDNP – Cheques Drawn Not Presented^RT
CE – Contract Engineer^RT
CEDAC – Civil Engineering Design And Construction^RT
CEDG – Civil Engineering Design Group^RT
CEGB – Central Electrictricity Generating Board (now fragmented into producers and distributors)^RT
CENELEC – European Committee for Electrotechnical Standardisation ^UoS
CENTRO – Marketing name of West Midlands Passenger Transport Executive^RT
CER – Change En Route^RT
CERT – City of Edinburgh Rapid Transport^RT
CESM – Civil Engineering Safety Manual^RT
CET – Controlled Emission Toilet^UoS
CGT – Capital Gains Tax^RT
CH – CHiltern Railway Company^RT
CHALET – Casualties, Hazards, Access, Location, Emergency services and Time^RT
CHAPS – Clearing House Accounts Payable System^RT
CHIP – Chemicals Hazard Information and Packaging regulations^RT
CI – Contract Instruction^RT
CIÉ – Corás Iompair Éireann, holding company of Iarnród Éireann (Irish Rail)^RailCons
CILT – Centre for Independent Transport Research (London)^RT
CIM – rules for international carriage of goods^RT
CIMA – Chartered Institute of Management Accountants^RT
CIMAH – Control of Industrial Major Accident Hazard^RT
CIMU – Central Infrastructure Maintenance Unit^RT
CIP – Core Investment Programme^RT
CIS – Customer Information System^RT
CITB – Construction Industry Training Board^RT
CITDS – Construction Industry Tax Deduction Scheme^RT
CLASS 0 TRAINS – Light locomotives^RT
CLASS 1 TRAINS – Express passenger trains, mail trains and some emergency trains^RT
CLASS 2 TRAINS – Stopping passenger trains^RT
CLASS 3 TRAINS – Express parcel trains^RT
CLASS 4 TRAINS – Express freight trains – 75mph maximum speed^RT
CLASS 5 TRAINS – Empty coaching stock trains^RT
CLASS 6 TRAINS – Express freight trains – 60mph maximum speed^RT
CLASS 7 TRAINS – Freight trains with 45mph maximum speed^RT
CLASS 8 TRAINS – Freight trains with 35mph maximum speedand engineers’ trains^RT
CLASS 9 TRAINS – Eurostar trains^RT
CM – Contracts Manager^RT
CMD – Central Materials Depot^RT
CMS – Competence Management System^RT
COA – Chart Of Accounts^RT
CoCP – Code of Construction Practice^RT
COI – Confirmation Of verbal Instruction^RT
COMPASS – COMbined Performance And Safety System^RT
CoPA – Control of Pollution Act 1974^RT
COS – Client Operating System^RT
COSHH – Control Of Substances Hazardous to Health 1988^RT
COSS – Controller of Site Safety^UoS
COT – Condition Of Track. ^RT
COTS – Commercial Off The Shelfequipment ^UoS
COWD – Cost Of Work to Date^RT
CPC – Circuit Protective Conductor^RT
CPD – (1) Capital Programmes Directorate, (2) Continuing Professional Development^RT
CPMG – Company Performance Management Group^RT
CPMT – Central Project Management Team (WCML)^RT
CPMT – Central Project Management Team (WCML)^RT
CPO – Compulsory Purchase Order^RT
CPPP – Confirmed Period Possession Plan^RT
CPPP – Confirmed Period Possession Plan^RT
CPS – Crown Prosecution Service^RT
CPST – Central Project Sponsor’s Team (WCML^RT
CR – Change Request^RT
CRA – Call Routing Apparatus^RT
CRC – Class Representative Committee^RT
CRE – (1) Contractor’s Responsible Engineer , (2) Conductor Rail Equipment^RT
CRG – (1) Contracts Review Group, (2) Commercial Review Group^RT
CRR – Competition & Regulatory Reviews^RT
CRS – Computerised Reservation System^RT
CRT – (1) Critical Rail Temperature^, (2) Construction Round Table^RT
CRUCC – Central Rail Users’ Consultative Committee^RT
CSA – Cross–Sectional Area^RT
CSAC – Candidate Special Area of Conservation
CSC – (1) (former) Contractor's Safety Case or (former) Connex South Central^RT
CSE – Connex South Eastern^RT
CSM – (1) Commercial Services Manager , (2) Customer Service Manager^RT
CSR – Cab Secure Radio^RT
CT – Central Trains^RT
CTC – Centralised Traffic Control ^UoS
CTR – Cost Time Resource^RT
CTR1 – Channel Tunnel Route 1 (via Tonbridge)^RT
CTR2 – Channel Tunnel Route 2 (via Maidstone)^RT
CTR3 – Channel Tunnel Route 3 (via Redhill)^RT
CTRL – Channel Tunnel Rail Link^RailCons
CTRU – (former) Central Track Renewals Unit^RT
CV – Curriculum Vitae^RT
CWM – Carriage Washing Machine^RT
CWPR – Company Weekly Performance Report^RT
CWR – Continuously Welded Rail^RT
CWT – Carlson Wagonlit Travel ^RT
C2C – Acronym for London Tilbury and Southend line^RailCons
 

D...

D&C – Design and Construction^RT
D&D – Design & Development^RT
D&DA – Design and Development Authority^RT
D&DR – Design & Development Report^RT
D&I – Design & Implementation^RT
D&IA – Design and Implementation Authority (see also DD&I)^RT
DAB – Departmental Advice (Blue).^RT
DAC – Depot Access Conditions^RT
DAL – Down Avoiding Lane^RT
DAPF – Document Amendment Proposal Form^RT
DAPP – Draft Annual Possession Plan^RT
DART – (1) Digital Advanced Radio for Trains, (2) the coastal metro system in Dublin^RailCons
DB – Deutsche Bundesbahn, German State Railways^UoS
DBFO – Design Build Finance Operate (Highways Agency Tender arrangements)^RT
DBSO – Driving Brake Second Open (Anglia TOC Push–Pulls)^RT
DC – Direct Current ^RT
DCA – Data Concentrator Appreciation^RT
DCF – Discounted Cash Flow^RT
DCIO – Deputy Chief Inspecting Officer (or Railways)^RT
DCM – Duty Contracts Manager^RT
DCP – (1) Document Control Point, (2) Designated Competent Person^RT
DD – Direct Debit^RT
DDA – (1) Disability Discrimination Act, (2) Design & Development Authority^RT
DDI or DD&I – Design Development and Implementation^RT
DEL – Down Electric Line^RT
DEMU – Diesel Electric Multiple Unit^RT
DEP – Designated Earth Point^RT
DETP – Detailed Engineering Train Plan^RT
DETR – Department of the Environment, Transport and the Regions^RT
DFL – Down Fast Line^RT
DFO – Depot Facility Owner^RT
DFT – DART Fixed Terminal^RT
DG – Dangerous Goods^RT
DGI – Dangerous Goods Incident^RT
DGL – Down Goods Loop^RT
DGPS – Differential Global Positioning by Satellite.^UoS
DIADS – Diagram Input And Distribution System^RT
DIRFT – Daventry International RailFreight Terminal^RT
DIS – Flexible DIsplay System (IECC replacement for SDS)^RT
DLM – Data Link Module^RT
DLR – Docklands Light Railway^RT
DM – Deutsche Mark(former German Currency) ^RailCons
DML – (1) Data Manipulation Language , (2) Down Main Line
DMMU – (occasionally) Diesel Mechanical Multiple Unit^RT
DMSS – Development Manager, Signalling Strategy^RT
DMU – Diesel Multiple Unit^RT
DNC – Declared Non–Compliance^RT
DO – Driver Only^RT
DoE – (former) Department of the Environment^RT
DoETR – see DETR^RT
DOO – Driver Only Operation^RT
DOO(NP) – Driver Only Operation – Non Passenger^RT
DOO(P) – Driver Only Operation – Passenger^RT
DOP – Driver Only Passenger^RT
DOS – Disk Operating System^RT
DOT – Department Of Transportation (United States) ^UoS
DoT or DTp – (former) Department of Transport^RailCons
DPA – Delegated Procurement Authority^RT
DPC – (1) Data Protocol Converter , (2) Development Planning Centre , (3) Damp Proof Course^RT
DPI – Dye Penetrant Inspection^RT
DPL – (1) Down Platform Line; or , (2) Down Passenger Loop^RT
DPM – Development Planning Manager^RT
DPPP – Disabled People's Protection Policy^RT
DPPP – Draft Period Possession Plan^RT
DQM – Data Quality Manager^RT
DRA – Driver Reminder Appliance^RT
DRM – Delivery Resource Manager^RT
DRS – Direct Rail Services
DSD – Driver’s Safety Device^RT
DSE – Display Screen Equipment^RT
DSL – Down Slow Line^RT
DSS – Department of Social Security^RT
DTI – Department of Trade and Industry^RT
DTL – Down Tilbury Loop^RT
DTMF – Dual Tone Multi Frequency^RT
DTS – Dynamic Track Stabiliser^RT
DVT – Driving Van Trailer. ^RT
DWL – Dynamic Warning Lights^RT
DX – Direct eXtract (wall mounted air distribution system)^RT

E...

E&G – Edinburgh to Glasgow line^RT
E&M – Earth and Mark^RT
E&OD – Engineering and Operations Development^RT
E&P – (1) Electrification and Plant, (2) Engineering and Production^RT
E,L&N – Early, Late and Night (turns of duty)^RT
EA – (1) East Anglia, (2) Electronics Appreciation^RT
EAC – Extended Arm Contract^RT
EAM – Engineering Access Manager^RT
EAMG – Engineering Access Management Group^RT
EAWA – Electricity at Work Act^RT
EAZ – East Anglia Zone^RT
EAZIAL – Easy Access Zonal Infrastructure Asset Log^RT
EBS – Emergency Bypass Switch (on rolling stock)^RT
EC – European Community (now EU)^RT
EC4T – Electric Current for Traction^RT
ECC – English China Clays^RT
ECML – East Coast Main Line^RT
ECO – Electrical Control Operator^RT
ECR – (1) Electrical Control Room, (2) Evaluation of Change Request^RT
ECRO – Electrical Control Room Operator^RT
ECS – Empty Coaching Stock ^RT
ECS – Empty Coaching Stock^RT
ECU – (former) European Currency Unit (now EURO)^RT
EDI – Electronic Data Interchange^RT
EDP – (1) Electrification Distribution and Plant^{RT, (2)} Electronic Data Processing^UoS
EE&CS – Electrical Engineering & Control Systems^RT
EEB – (former) Eastern Electricity Board^RailCons
EEN – Examining Engineer’s Nominee (for bridge strikes)^RT
EFC – External Financing Contribution^RT
EFE – Electrification Fixed Equipment^RT
EFL – External Financing Limit^RT
EFPL – Economical Facing Point Lock^RT
EFRTC – European Federation of Railway Trackwork Contractors^RT
EG – Executive Grade: old style executive job grading system^RT
EHD – East Ham Depot^RT
EI – Electrical Installation^RT
EIA – (1) Electronics Industry Association (standards setting body), (2) Environmental Impact Assessment^RT
EIB – European Investment Bank^RT
EIP – Examination In Public^RT
EIRENE – European Integrated railways Radio Enhanced NEtwork^UoS
ELCB – Earth Leakage Circuit Breaker^RT
ELP – East London Partnership^RT
ELR – Engineers Line Reference^RT
EM – Environmental Manager^RT
EMC – ElectroMagnetic Compatibility^RT
EMGTPA – Equivalent MillionGross Tonnes Per Annum^UoS
EMI – ElectroMagnetic Interference^RT
EMP – Environmental Management Plan^RT
EMS – Environmental Management Statement^RT
EMU – (1) Electric Multiple Unit, (2) European Monetary Union^RT
EN – Euro Norm^RT
ENS – European Night Services^RT
EOA – End of Authority^RT
EOTD – End of Train Device^RT
EP – Electronic Principles^RT
EPA – Engineering Publications Assistant^RT
EPB – Electro – Pneumatic Brake^UoS
EPD – Engineering & Production Directorate^RT
EPI – Environmental Performance Indicator^RT
EPROM – Erasable Programmable Read Only Memory^RT
EPS – (1) European Passenger Services, renamed Eurostar (UK), (2) Earnings Per Share^RT
EQAP – EQuipment APpreciation^RT
ER – Employer’s Representative^RT
ERDF – European Regional Development Fund^RT
EROS – (1) Emergency Restriction Of Speed or (2a) Efficiency by means of the Rationalisation Of Signal boxes and (2b) Early Rationalisation Of Signalling^RT
ERTMS – European Railways Traffic Management System^RT
ES – Engineering Supervisor^RT
ESI – Electricity Supply Industry^RT
ESM – Engineering Safety Management (Yellow Book)^RT
ESMS – Engineering Safety Management System^RT
ESR – Emergency Speed Restriction^RT
ESSD – ElectroStatic Sensitive Device^RT
ETA – Expected Time of Arrival^RT
ETB – Electronic Token Block^RT
ETCS – European Train Control System^RT
ETD – National Extension Trunk Dialling^RT
ETE – Electrical Traction Engineers^RT
ETH index – Electric Trains Heating Capacity (on traction rolling stock)^RT
ETH – Eidgenössische Technische Hochschule (Swiss Federal Institute of Technology)^UoS
ETHERNET – Computer cabling system^RT
ETM – Electric Track Maintenance^RT
ETR – Electronic Train Recording. ^RT
ETRB – Electronic Train Register Book^RT
ETRM – Engineering Train Routing Map^RT
EU – European Union^RT
EuroSPIN – European Seamless Passenger Information Network
EUCG – End User Computing Group^RT
EUKL – Eurostar (UK) Ltd^RT
EVA – Ethylene Vinyl Acetate^RT
EVR – Early Voluntary Retirement^RT
EWD – Each Week Day^RT
EWI – Emergency Warning Indicator^RT
EWS – English, Welsh & Scottish Railway Ltd. ^RT
ExCo – Railtrack Line Executive Committee^RT
Expotel – hotel accommodation and conference booking agency^RT
EZP – Electro–Zinc Plating^RT
 

F...

F/B – Foot Bridge^RT
F/H – FreeHold^RT
FA – Fixed Assets^RT
FAQ – Frequently Asked Question^RT
FAST – Federation Against Software Theft ^RT
FAT – Factory Acceptance Test^RT
FB – RAIL – Flat Bottom Rail ^RT
FBMIS – Finance and Business Management Information System: now known as BMIS^RT
FC – Financial Controller^RT
FDC – Financial Data Control^RT
FDDB – Fibre Distributed Database^RT
FDDI – Fibre Distributed Data Interface^RT
FDM – Frequency Division Multiplex^RT
FE – (1) Finite Elements, (2) Foundation Electronics^UoS
FFG – Freight Facilities Grant^RT
FFT – Functional Fault Tree ^UoS
FGE – First Great Eastern^RT
FGW – First Great Western^RT
FIBU – FIfty hertz Booster Unit^RT
FIO – For Information Only^RT
FIRM – Fares Increases Regulation Mechanism^RT
FLAWS – a computer database of rail flaws ^RT
FLT – Freight Liner Terminal^RT
FM – Frequency Modulation ^UoS
FMEA – Failure Mode and Effect Analysis ^UoS
FMECA – Failure Mode Effect and Criticality Analysis ^UoS
FMES – Fixed & Mobile Equipment Supply^RT
FN – Fault Number^RT
FNW – First North Western^RT
FOC – (1) Freight Operating Company, (2) Fibre Optic Cable, (3) Free Of Charge^RT
FORI – Fibre Optic Route Indicator^RT
FOU – Freight Operating Unit^RT
FP – (1) FootPath (level crossing), (2) Flexibility Premium^RT
FPL – Facing Point Lock ^RT
FPM – Fire Precautions Manager^RT
FR – Feasibility Report^RT
FRA – (1) Federal Railroad Administration (in the USA), (2) Fixed Rate Agreement^RT
FRAME – Fault Reporting And Monitoring Equipment^RT
FRED – Financial Reporting Exposure Draft^RT
FRP – Field Reporting Procedures^RT
FRS – (1) Financial Reporting Standard, (2) Functional Requirements Specification^RT+UoS
FS – Feeder Station^RT
FS – Fixed Stations (Trackside radio equipment for cab secure radio)^UoS
FSG – Financial Statement Generator: a reporting tool within the BMIS system^RT
FSH – Full Screen Height^RT
FTA – (1) Fault Tree Analysis^UoS, (2) Federal Transit Administration (of the DOT, United States) ^UoS, (3) Freight Transport Association^RT
FTS – Failure To Stop^RT
FUG – Freight Up Grade^RT
FURNO – Until FURther NOtice^RT
FX – Foreign Exchange^RT
 

G...

G&SW – (former) Glasgow and South West line^RT
GBP – Great Britain Pound^RT
GBPRT – Great Britain Passenger Rail Timetable^RT
GBV – Gross Book Value^RT
GDI – Graphical Data Interface^RT
GDP – Gross Domestic Product^RT
GE – (former) Great Eastern^RT
GENIUS – GEmini for Non Integrating Unit Stock^RT
GEOGIS – GEOGraphic Information System ^RT
GER – (former) Great Eastern Railway ^RT
GF – Ground Frame^RT
GIJ – Glued Insulated rail Joint^RT
GIS – (1) Graphical Information System, (2) Geographic Information System^RT+UoS
GL – (1) Goods Line, (2) General Ledger^RT
GLE – Grant Lyon & Eagre^RT
GLW – Gross Laden Weight^RT
GMPTA – Greater Manchester Passenger Transport Authority^RT
GMPTE – Greater Manchester Passenger Transport Executive^RT
GMT – Greenwich Mean Time^RT
GN – (former) Great Northern Line (Kings Cross to Cambridge via Royston)^RT
GNER – Great North Eastern Railway^RT
GNRTS – Greater Nottingham Rapid Transit System^RT
GOB – Gospel Oak to Barking line^RT
GOL – Government Office for London^RT
GP – General Purpose^RT
GPF – General Protection Fault (in computing)^RT
GPL – Ground Position Light^RT
GPR – General Purpose Relief (staff)^RT
GPRS – General Packet Radio Service^UoS
GPS – Global Positioning by Satellite system^UoS
GRIP – Guide to Railway Investment Projects ^UoS
GRN – Goods Received Note^RT
GSM – Global System for Mobile communications^RT
GSM–R – Global System for Mobile communications for Railways ^RT+UoS
GSP – Ground Switch Panel^RT
GSPP – General Specification for Possession Planning^RT
GTD – Group Tax Department^RT
GTO – Gate Turn Off Thyristor^UoS
GTRM – GT Railway Maintenance^RT
GUI – Graphical User Interface^RT
GUV – General Utility Van^RT
GW – Great Western^RT
GWH – Great Western Holdings^RT
GWML – Great Western Main Line^RT
GWR – (former) Great Western Railway^RailCons
GWT – Great Western Trains^RT
GWUG – Great Western UpGrade^RT
GWZ – Great Western Zone^RT
 

H...

H&S – Health and Safety^RT
H&SE – see HSE^RT
H/S – Hand Signaller^RT
HA – Highways Agency^RT
HABD – Hot Axle Box Detector^RT
HASAW – Health And Safety At Work ^RT
HAZCHEM – HAZardous CHEMical^RT
HAZID – HAZard IDentification^RT
HAZOP – HAZard OPerability study^RT
HAZPAK – training course for drivers of vehicles carrying dangerous substances in packages ^RT
HCA – Historic Cost Accounting^RT
HEP – Head End Power ^UoS
HEX – Heathrow EXpress^RT
HFDG – Human Factors Development Group^RT
HIP – Headquarters Investment Panel^RT
HL – (1) High Level, (2) Home Location^RT
HM – Her Majesty’s^RT
HMFI – Her Majesty’s Factory Inspectorate^RT
HMRI – Her Majesty's Railway Inspectorate^RT
HOBC – High Output Ballast Cleaner^RT
HOCM – Head of Contract Management^RT
HOE (HofE) – Head Of Engineering^RT
HOP – Head Of Projects^RT
HOPO (HoPO) – Head Of Projects Organisation^RT
HOPP – Head Of Property Projects^RT
HQ – Head Quarters^RT
HR – Human Resources^RT
HRM – Human Resources Manager^RT
HRS – Human Resources System ^RT
HSC – Health & Safety Commission^RT
HSDR – High Speed Data Ring^RT
HSE – Health & Safety Executive (UK)^RT
HSM – Hand Signal Man^RT
HST – High Speed Train^RT
HSTR – High Speed Track Recording^RT
HSTRC – High Speed Track Recording Coach^RT
HSTRT – High Speed Track Relaying Tin^UoS
HSWA – Health and Safety at Work Act 1974^RT
HTS – High Tensile Steel^RT
HV (hv) – (1) High Voltage, (2) High Visibility^RT
HVAC – Heating, Ventilating and Air Conditioning ^UoS
HVI – High Voltage Impulse (Track Circuit type)^RT
HW – HardWare^RT
HW–Point – Particular type of point with electricmotor drive^UoS
Hz – Hertz^RT
 

I...

I/L – InterLocking^UoS
IA – (i) Implementation Authority, (2) Investment Authority ^RT
IAMS – Integrated Asset Management System^RT
IBH – Intermediate Block Home Signal^RT
IBIS – Internal Business Invoicing System: a former BR internal trading system^RT
IBJ – Insulated Block Joint^RT
IC – (1) InterCity, (2) Integrated Circuit, (3) Investment Committee, (4) Investment Controller^RT
ICAEW – Institute of Chartered Accountants of England and Wales^RT
ICC – (1) Infrastructure Control Centre, (2) International Convention Centre^RT
ICC – Infrastructure Control Centre^RT
ICDB – Industry Capacity DataBase^RT
ICE – (1) Institute of Civil Engineers, (2) InterCity Express (Germany)^RT
ICM – (1) Infrastructure Contracts Manager, (2) Internal Communications Manager^RT
ICMU – Interference Current Monitoring Unit (on 3 phase train)^RT
IDC – (1) Insulation Displacement Connector, (2) Inter Disciplinary Check^RT
IDF – Intermediate Distribution Frame^RT
IDMS – Integrated Document Management System^RT
IDS – Infrastructure Data Server^RT
IDT (ID&T) – Implementation, Development and Training^RT
IEC – International Electrotechnical Commission^UoS
IECC – Integrated Electronic Control Centre^RT
IEE – Institution of Electrical Engineers (Britain)^UoS
IEEE – Institute of Electrical and Electronics Engineers (United States) ^UoS
IERS – International Environmental Rating System^RT
IFC – Infrastructure Fault Control^RT
IFS – Independent Function Switch^RT
IGBT – Integrated Gate Bipolar Transistor^UoS
IIP – Investors In People^RT
ILM – Railtrack Infrastructure Liability Manager^RT
ILWS – Inductive Loop Warning System^RT
IMACS – Inventory Management Accounting and Control System^RT
IMC – (1) Infrastructure Maintenance Contractor, (2) Infrastructure Maintenance Company, (3) Infrastructure Maintenance Contract^RT
IMC2 – 2nd generation Infrastructure Maintenance Contract^RT
IMCO – (former) Infrastructure Maintenance COmpany (obsolete term)^UoS
IMDG – International Maritime Dangerous Goods Code^RT
IMechE – Institution of Mechanical Engineers^UoS
IMG – Infrastructure Materials Group^RT
IMPACT – Improved Manufacturing Performance Through Active Change and Training^RT
IMPS – Investment Monitoring and Planning System: the BR predecessor to PIPS^RT
IMR – Interlocking Machine Room^RT
IMU – Infrastructure Maintenance Unit^RT
INLORS – INner London Orbital Route Strategy^RT
IORPS – Integrated Operational Railway Planning System^RT
IP – Investment Proposal^RT
IRJ – Insulated Rail Joint^RT
IRR – Internal Rate of Return^RT
IRSE – Institution of Railway Signal Engineers^RT
IS – (1) Information Systems, (2) Intermediate Signalling^RT
ISAR – Information Systems Activity Request^RT
ISDN – Integrated Services Digital Network^RT
ISG – Infrastructure Support Group^RT
ISM – IECC System Monitor^RT
ISO – International Standards Organisation ^UoS
ISRS – International Safety Rating System^RT
ISTP – Intermediate Signalling Technology: Principles^RT
ISU – Infrastructure Services Unit^RT
IT – Information Technology^RT
ITE – Institute of Transportation Engineers (United States) ^UoS
ITPM – IT Process Model^RT
ITS – Infrastructure Testing Services^RT
ITT – Invitation To Tender^RT
ITU – International Telecommunications Union^RT
IVPS – Intermediate Voltage Power Supply ^UoS
IVS – Infrastructure Video System (being developed by BRBS and Omnicom Eng. Ltd)^RT
IZ – Inter Zonal: the transfer of costs between Business Units without cash^RT
IZPD – Inter–Zonal Possession Database^RT
 

J...

JCN – (1) Job Cost Number^RT ,, (2) JunCtioN^UoS
JCT – Joint Construction Trades ^RT
JD – Job Description^RT
JLE – Jubilee Line Extension^RT
JN (JC) – Junction^RT
JS1 – basic signalling cable jointing and testing^RT
JS2 – advanced signalling cable jointing and testing^RT
JSOP – Joint Signing On Point (Cambridge)^RT
JTC – Jointless Track Circuit^RT
 

K...

KDC – Key Distribution Centre^RT
KE – Kinematic (or kinetic) Envelope^RT
KPI – Key Performance Indicator^RT
kVA – kiloVolt–Ampere^RT

L...

L&B – Land and Buildings^RT
L/H – Leasehold^RT
L/S – (1) Late Start, (2) London Side^RT
LA – Local Authority^RT
LAN – Local Area Network (for computer systems)^RT
LAWS – Low Adhesion Warning System^RT
LB – Line Blocked^RT
LC – (1) Level Crossing, (2) locally controlled manned level crossing, (3) Line Clear^RT
LCAMS – Low Carbon Austenitic Manganese Steel^RT
LCD – Liquid Crystal Display ^UoS
LCP – Local Control Panel^RT
LCR – London and Continental Railways^RT
LCU – Local Control Unit^RT
LD – (1) Light Diesel locomotive, (2) Liquidated Damages^RT
LDDC – (former) London Docklands Development Corporation^RT
LDG – List of Dangerous Goods (obsolete)^RT
LDT – Long Distance Termination^RT
LE – Light Engine (or Light Electric loco)^RT
LEB – London Electricity Board^RT
LEC – (former) London Electricity Contracting Limited^RT
LED – Light Emitting Diode ^UoS
LEM – Local Estimating Manager^RT
LEU – Lineside Electronic Unit^RT
LFB – London Fire Brigade, now London Fire & Civil Defence Authority^RT
LGV – Ligne Grande Vitesse: French high speed line^UoS
LIFT – London International Freight Terminal^RT
LITM – Local IT Manager^RT
LJU – Line Jack Unit^RT
LL/H – Long Leasehold^RT
LLPA – Long Lead (Line) Public Address^RT
LMA – Limit of Movement Authority^UoS
LMD – Light Maintenance Depot (for locos and stock)^RT
LN – Leeds Northern^RT
LNE(Z) – London North Eastern (Zone)^RT
LOA – Limit of Authority^RT
LOP – Loss of Power^RT
LOS – Limit Of Shunt indicator^RT
LPA – Local Procurement Agent^RT
LPO – Local Process Owner^RT
LPS – Local Policy Statement^RT
LRM – Layout Risk Model^RT
LRP – Local Reporting Pack^RT
LRPC – London Regional Passengers’ Committee^RT
LRT – Light Rail Transit^UoS
LRV – Light Rail Vehicle ^UoS
LS – (Network Rail) Line Standard ^RT
LSB – Local Sensor Bus ^UoS
LSPD – Local Safety Policy Document^RT
LSS – London Shift Supplement^RT
LT – London Transport^RT
LTA – (1) London Transport Authority, (2) Lost Time Accidents^RT
LTC – Long Term Charge^RT
LTP – Local Transport Plans^RT
LTS – (former) London, Tilbury and Southend, now C2C^RailCons
LUL – London Underground Ltd^RT
LV – (1) LiVerpool Street, (2) Low Voltage^RT
LVDT – Linear Variable Differential Transformer^RT
LWR – Long Welded Rail^RT
LWRT – Long Welded Rail Train ^RT
LX (L/X) – level crossing^RT
 
 

M...

M&E – Mechanical and Electrical^RT
M&EE – Mechanical & Electrical Engineering (or Engineer)^RT
MA – Movement Authority^RT
MAFF – Ministry of Agriculture Fisheries & Food^RT
MAS – (1) Multiple Aspect Signalling, (2) Management Aspects of Supervision (Signalling & Telecomms)^RT
MB – Level crossing with Manually lifting Barriers^RT
MBO – Management Buy Out^RT
MCB – (1) Miniature Circuit Breaker, (2) Manually Controlled Barrier (of level crossing)^RT
MDC – Management Driven Change^RT
MDF – (1) Main Distribution Frame, (2) Medium Density Fibreboard^RT
MEAV – Modern Equivalent Asset Value^RT
MEBO – Management and Employee Buy Out^RT
MEF – Modern Equivalent Form^RT
MEP – Member of European Parliament^RT
MGL – Multiple Groove Locking^RT
MGR – Merry–Go–Round^RT
MHSW (MHSAW, MHSWR) – Management of Health and Safety at Work Regulations, 1992^RT
MI – Mechanical Installation Practices^RT
MICC – Management Information Communications Centre (controls BTP operations South of England)^RT
Mids – Midlands^RT
MIPS – Million Instructions Per Second^RT
MIS – Management Information System^RT
MLF – Main Line Freight^RT
MLRI – Multi–Lamp Route Indicator^RT
MM – Money Market^RT
MMC – Monopolies and Mergers Commission^RT
MML – Minimum Monetary Limit^RT
MOD – Ministry Of Defence^RT
MOS – (1) Mobile Operations Supervisor, (2) Motor Operated Switch^RT
MP – MilePost ^RT
MPD – Major Projects Division (Thameslink 2000, WCML, Crossrail etc)^RT
MPI – Magnetic Particle Inspection^RT
MPM – Multi Processor Module^RT
MPU – Motive Power Unit^RT
MPV – Multi Purpose Vehicle^RT
MRP – (1) Management Reporting Pack, (2) Monthly Reporting Pack^RT
MRT – Minimum Rail Temperature^RT
MS – Method Statement^RT
MSL – Level crossing with Miniature Stop Lights^RT
MSP – Measured Shovel Packing^RT
MTBF – Mean Time Between Failures^UoS
MTBFF – Mean Time Between Functional Failures^UoS
MTBHE – Mean Time Between Hazardous Events^UoS
MTL – Mersey Travel Ltd. ^RT
MTP – Mode of Travel Priority ^RT
MTR – Mass Transit Railway (Singapore)^UoS
MTRC – MassTransit Railway Corporation (Hong Kong)^UoS
MTRT – Matisa Track Recording Trolley^RT
MTTR – Mean Time To Repair^UoS
MTTRS – Mean Time To Restore Service^UoS
MVB – Multifunctional Vehicle Bus^UoS
MWL – Level crossing with Miniature red/green Warning Lights^RT
MWO – Minor Works Order^RT
MZ – Midland Zone (Lead Zone)^RT
MZSA – Midland Zone Sponsors Agent^RT
 

N...

N&VMP – Noise and Vibration Management Plan^RT
NAO – National Audit Office^RT
NAPS – National Accounts Payable System: a former BR system^RT
NASG – National Applications Support Group^RT
NAT – Not Applicable Timetable^RT
NATM – New Austrian Tunnelling Method^RT
NBA – National radio network) Base station Alignment ^RT
NBV – Net Book Value^RT
NCC – National Control Centre^RT
NCL – Northern City Line^RT
NCR – Non–Conformance Report^RT
NDA – Not Described Alarm^RT
NDM – Network Development Manager^RT
NDN – National Data Communications Network^RT
NDT – Non–Destructive Testing^RT
NEBOSH – National Examination Board in Occupational Safety & Health^RT
NEC – National Electrical Code (also known as NFPA 70)^UoS
NEG – National Express Group^RT
NEM – National Estimating Manager^RT
NEMA – National Electrical Manufacturers Association^UoS
NFF – No Fault Found^RT
NFPA – National Fire Prevention Association^UoS
NG – Normal Grade^RT
NI – National Insurance^RT
NIC – National Insurance Contributions^RT
NIR – (1) National Incident Register, (2) Northern Ireland Railways^RT
NLL – North London Line (North Woolwich–Richmond)^RT
NLR – (former) North London Railways^RT
NMC – Network Management Centre^RT
NMCSA – Network Management Centres Sponsor's Agent^RT
NMS – Network Management Statement^RT
NOL – Notice of Liability^RT
NPCCS – Non Passenger Carrying Coaching Stock^RT
NPM – National Procurement Manager^RT
NPMEA – National Planning Manager, Engineering Access^RT
NPO – National Process Owner^RT
NPS – National Payroll System^RT
NPV – Net Present Value^RT
NPW – Normal Place of Work^RT
NR – Network Rail ^UoS
NRA – National Rivers Authority^RT
NRA – National Rail Academy (now RSC) ^UoS
NRES – National Rail Enquiry Service^RT
NRG – National Records Group^RT
NRLS – Network Rail Line Standards^RT
NRM – Nominated Responsible Manager^RT
NRN – National Radio Network^RT
NRNA – National Radio Network Appreciation^RT
NRSC – Network Rail railway Safety Case^RT
NRS – National Railway Supplies^RT
NSC – National Supply Contract^RT
NSE – (former) Network South East^RailCons
NSKT – No Signaller – Key Token^RT
NSTR – No Signaller – Token Remote^RT
NTBEP – Not To Be Exceeded Price^RT
NTN – National Teleprinter Network^RT
NTO – National Training Organisation^RT
NTP – North Trans–Pennine route^RT
NTPC – National Transaction Processing Centre: now known as the Shared Services Centre (SSC)^RT
NTR – National Track Renewals^RT
NVQ – National Vocational Qualification^RT
NWR – Normal Working Resumed^RT
NWT – (former) North Western Trains^RT
NWZ – North West Zone^RT
NX – eNtrance – eXit (Signal Box Control Panel)^RT
 

O...

O&I – Operations and Interface
O&M – Operation & Maintenance (manual)^RT
O&SPA – Operational and Support hazard Analysis^UoS
O/B – Over Bridge^RT
OC – Open Crossing^RT
OCB – Oil Circuit Breaker^RT
OCC (or Occ) – Occupied^RT
OCL – Operational Communications Link^RT
OCS – (i) Overhead Catenary System, (2) One Control Switch (signalling panel)^RT
OCU – Operator’s Control Unit^RT
OD (od) – Outside Diameter^RT
OE – Outside Edge^RT
OEL – Occupational Exposure Limit^RT
OETR – Outline Engineering Train Requirements^RT
OHL – OverHead Line^RT
OHLE – OverHead Line Equipment^RT
OHNS – OverHead Line Neutral Section^RT
OJEC – Official Journal of the European Community^RT
OLC – Occupation Level Crossing^RT
OLE – Overhead Line Equipment^RT
OLEAR – Overhead Line Equipment Asset Register^RT
OLEMI – Overhead Line Equipment Master Index^RT
OOG – Out Of Gauge^RT
OOO – Out Of Order^RT
OOU – Out of Use^RT
OP – Outside Party^RT
OPEX – OPerating EXpenditure^RT
OPM – Operational Planning Manager^RT
OPO – One Person Operation^UoS
OPRAF – Office of Passenger RAil Franchising^RT
OPS – Outline Project Specification^RT
OPU – Operational Planning Unit^RT
OPUG – Other Passenger Upgrades^RT
ORN – Overlay Radio Network^RT
OROR – Outside Rules Of the Route^RT
ORR – Office of the Railway Regulator ^RT
OS – Ordnance Survey^RT
OSG – Operation Safety Group^RT
OSGR – Ordnance Survey Grid Reference^RT
OSI – Open Systems Interconnect^UoS
OTDR – Optical Time Domain Reflectometer^RT
OTM – (1) Overhead–Line Traction Maintenance, (2) On–Track Machine^RT
OTMR – On Train Monitoring Recorder^RT
OTW – One Train Working^RT
 

P...

P3 – Primavera Project Planner ^RT
P – Programme^RT
P&C – Points and Crossings: an alternative abbreviation for S&C^RT
P&E – Plant and Equipment^RT
P&L – Profit and Loss^RT
P&M – Plant & Machinery^RT
P.Way (P–way) – see Permanent Way^RT
PA – (1) Public Address, (2) Personal Assistant or p.a. Per Annum^UoS
PAL – Property Action Line
PABS – Passenger track Access Billing System^RT
PABX – Private Automatic Branch eXchange^RT
PACS – Public Affairs Correspondence System^RT
PACT – PAved Concrete Track: also known as slab track^RT
PADS – Parts And Drawing System^RT
PAF – Project Authority Form^RT
PALADIN – Performance And Loading Analysis Database INformation^RT
PAM – Product Acceptance Manager^RT
PAMX – PrivAte Manual branch eXchange^RT
PAT – Performance Action Tracking^RT
PAX – Private Automatic Exchange^RT
PAYE – Pay As You Earn (i.e. income tax)^RT
PBT – Profit Before Tax^RT
PBX – Private Automatic Branch eXchange^RT
PC – Personal Computer^RT
PCB – (1) Printed Circuit Board, (2) PolyChlorinated Biphenyl (coolant/insulant for transformers, (3) Petty Cash Book^RT
PCM – (1) Project Control Manual, (2) Production Control Manager^RT
PCS&TE – Profit Centre Signal & Telecommunications Engineer^RT
PCSE(M) – Profit Centre Signal Engineer (Maintenance)^RT
PCSE(W) – Profit Centre Signal Engineer (Works)^RT
PCTE – Profit Centre Telecommunications Engineer^RT
PCV – Petty Cash Voucher^RT
PD – Project Delivery^RT
PDAC – Performance Data Accuracy Code^RT
PDFH – Passenger Demand Forecasting Handbook^UoS
PDH – Plesiochronous Digital Hierarchy^RT
PDM – Project Development Manager^RT
PDMX – Programmable Digital Multiplexer^RT
PDP – Personal Development Plan^RT
PDS – Project Definition Stage^RT
PDT – Portable Data Terminal^RT
PEARLS – Personnel Enquiries and Administration Recording Local System^RT
PEARS – Paladin data Extract And Recording System^RT
PESRCY – PassEnger Service Requirement Compliance Yardstick
PER – Portable (relocatable) Equipment Room^RT
PETS – Public Emergency Telephone System^RT
PFI – Private Finance Initiative^RT
PFM – (1) Performance Focus Manager , (2) Projects Finance Manager^RT
PFM – Performance Focus Manager^RT
PFPI – Process For Performance Improvement^RT
PH – Professional Head^RT
PHA – Preliminary Hazard Analysis^UoS
Phase 0 – Period of interim and full running of Virgin ATT at existing line speeds^RT
Phase 1 – Period of full running on WCML up to speeds of 200kph between 2002 & 2005^RT
Phase 2 – Full service after April 2005 up to speeds of 225kph^RT
PHIS – Performance Historical Information System^RT
PIC – Person in Charge^RT
PICOP – Person In Charge Of Possession^RT
PICP – Pollution Incident Control Plan^RT
PIDS – Passenger Information Display System^RT
PIE – Performance Improvement Executive^RT
PIMS – Programme Integrated Management System ^UoS
PIO – Police Incident Officer^RT
PIP – Property Investment Panel^RT
PIPS – Packaging and Investment Planning System^RT
PIXC – Passengers In eXcess of Capacity (bespoke regime applied to commuter services)^RT
PLC – Public Limited Company^RT
PLGS – Position Light Ground Signal^RT
PLJI – Position Light Junction Indicator^RT
PLOD – Patrolman's LookOut Device (Trackside staff protection system)^RailCons
PLRA – Private Locomotive Registration Agreement^RT
PLS – Position Light Signal^RT
PLUG – Pride Local User Group ^RT
PM – (1) Project Manager, (2) Production Manager^RT
PMBX – Private Manual Branch Exchange^RT
PMCS – Project Management Control System^RT
PMI – Project Manager's Instruction^RT
PMT – Project Management Team^RT
PMUX – Panel MUltipleXer^RT
PNB – Personal Needs Break^RT
PO – Purchase Order^RT
POA – Payment On Account^RT
POM – Possession Optimisation Manager^RT
POMG – Police Incident Office^RT
PON – Periodical Operating Notice^RT
PP – Period available for Possessions^RT
PPE – Personal Protective Equipment^RT
PPG – Planning Policy Guidance^RT
PPM – (1) Planned Preventative Maintenance, (2) Panel Processor Module^RT
PPP – Period Possession Plan^RT
PPTC – Powered Plant Training – Chainsaw^RT
PPTD – Powered Plant Training – Disc Cutter And Class 9 Cutting Of Wheels^RT
PRB – Personalised Rule Book^RT
PRDC – Princess Royal Distribution Centre (Royal Mail Railnet Hub at Willesden)^RT
PRI – Preliminary Routing Indicator^RT
PRIDE – (1) Possession Resource Information DatabasE, (2) Passenger Rail Information Display Equipment^RT
PRIMA – Professional Rail Industry Management Association^RT
PRM – PRocurement Manager^RT
PROCSYS – Procurement Control ^RT
PROJEX – PROJect EXpenditure ^UoS
PROM – Programmable Read Only Memory^RT
PROMISE – Planning and ResOurces MonItoring SystEm^RT
PROMPT – PRiority On Managing Performance Trends^RT
PSB – Power Signal Box^RT
PSBR – Public Sector Borrowing Requirement^RT
PSM – Performance Strategy Manager^RT
PSN – Packet Switched Network^RT
PSO – Public Service Obligation^RT
PSPP – Particular Specification for Possession Planning ^RT
PSR – (1) Permanent Speed Restriction, (2) Public Service Requirement^RT
PSRG – Project Strategy Review Group^RT
PSTN – Public Switched Telecommunications Network^RT
PT&R – Promotion Transfer & Redundancy^RT
PTA – Passenger Transport Authority^RT
PTE – Passenger Transport Executive^UoS
PTI – Positive Train Identification^UoS
PTM – Permanent Timetable Manager^RT
PTO – Public Telecommunications Operator^RT
PTS – Personal Track Safety^RT
PTW – Permit To Work^RT
PUG – Passenger Up Grades 1&2 on (WCML)^RT
PUWER – Provision and Use of Workplace Equipment Regulations 1992^RT
PVC – PolyVinyl Chloride^RT
PW – (1) Permanent Way, (2) Parallel Wing^RT
Pway – Permanent Way (track, ballast etc)^RT
PWI – Permanent Way Institution^RT
PWM – Pulse Width Modulation^UoS
PWMA – Permanent Way Maintenance Assistant^RT
PWME – Permanent Way Maintenance Engineer^RT
PWRA – Private Wagon owners Registration Agreement^RT
PWS – Permanent Way Supervisor^RT
PWSS – Permanent Way Section Supervisor^RT
 

Q...

QA – Quality Assurance^RT
QAM – Quality Assurance Manager^RT
QRA – Quantified Risk Analysis^RT
QRP – Quarterly Reporting Pack^RT
QS – Quantity Surveyor^RT
QX – Qualifying eXceptions ^RT
 

R...

R&PA – Route and Programme Analyst^RT
R&R – Rationalisation and Resignalling^RT
R(SCW) – Railway (Safety Critical Work) Regulations 1994^RT
R/G – level crossing with miniature Red & Green warning lights^RT
R/T – (1) RailTrack (or RT), (2) Right Time^RT
RA – (1) Route Availability, (2) Reporting Accountant, (3) Radio Agency or (4) Right Away platform indicator^RT
RAB – Regulatory Asset Base^RT
RAFS – RAil Freight billing System^RT
RAI – Right Away Indicator^RT
RAILTEL – RAILway TELephone project^RT
RAM – Random Access Memory^RT
RAMS – Reliability, Availability, Maintainability and Safety
RAP – Remedial Action Project^RT
RAR – Railtrack Asset Register^RT
RBC – Radio Block Centre^RT
RC – (1) Return Conductor^{RT, (2)} Remotely Controlled (Level Crossing),, (3) Reinforced Concrete, (4) Remote Control^RT+UoS
RCD – Residual Current Device^RT
RCDO – Railway Crossing Diversion Order^RT
RCE – Regional Civil Engineer^RT
RCF – Rolling Contact Fatigue^UoS
RCH – Railway Convalescent Home^RT
RCI – Railtrack Controlled Infrastructure^RT
RCL – Railway Claims Ltd^RT
RCM₍₁₎ – Reliability Centred Maintenance^UoS
RCM₍₂₎ – Remote Condition Monitoring^UoS
RCM² – Combination of RCM₍₁₎ and RCM₍₂₎ ^UoS
RD – GEC time division multiplex, type RD^RT
RDN – Railtrack Director’s Nominee^RT
RDO – Relevant Delivery Organisation^RT
RE – Resident Engineer^RT
REB – Relocatable Equipment Building^RT
RED – Railtrack Energy Database^RT
REG – Railtrack Executive Group^RT
REN – Ringer Equivalence Number, unit of load for telephone ringers^RT
Renlog – infrastructure renewals log^RT
REPTA – Railway Employees Privilege Ticket Association^RT
RES – Rail Express Systems (former parcels and mail train operator, now part of EWS)^RailCons
RETB – Radio Electronic Token Block^RT
RF – Radio Frequency^UoS
RfD (RFD) – Railfreight Distribution : now part of EWS^RT
REFOS – Running Edge to Face Of Structure^RT
RFQ – Request For Quotation^RT
RGS – Railway Group Standard^RT
RGSP – Railway Group Safety Plan^RT
RHA – Road Haulage Association^RT
RHS – Rectangular Hollow Section^RT
RHT – Railway Heritage Trust^RT
RI – Relay Interlocking^RT
RIA – Railway Industry Association^RT
RIAC – Railway Industry Advisory Committee^RT
RIC – (1) Rail Incident Commander, (2) Regolamento Internazionale Carrozze (Regulations for the international exchange of passenger carriages)^UoS
RICA – Regional Independent Commercial Auditor (SRP)^RT
RICP – Rail Incident Control Post^RT
RID – Regulations governing International carriage of Dangerous goods by rail^RT
RIDDOR '95 – Reporting of Injuries, Disease and Dangerous Occurrences Regulations 1995^RT
RIDRR – Railway Industry Dispute Resolution Rules (see also CAHA)^RT
RIFAA – Rail Industry First Aid Association^RT
RIG – Railway Industry Group^RT
RII – Relay Interlocking Interface^RT
RIL – Railtrack Insurance Limited^RT
RIO – Rail Incident Officer^RT
RIP – (former) Railtrack Investment Panel^RT
RIPM – Railtrack Investment Prioritisation Model^RT
RISC – Reduced Instruction Set Computer^RT
RISSC – Railway Industry Safety Strategy Comittee^RT
RITC – Railway Industry Training Council^RT
RITS – Rail Infrastructure Transport System^UoS
RIV – Regolamento Internazionale Vagoni (regulations governing the international exchange of railway freight wagons) ^UoS
RJIS – Rail Journey Information System^RT
RL – Relief Line (see also Slow Line)^RT
RLE – Rail Link Engineering^UoS
RM – Route Modernisation^RT
RMG – Railtrack Management Group^RT
RMPD – Route Modernisation Product Delivery^RT
RMS – Risk Management System^RT
RMT – National Union of Rail, Maritime and Transport Workers^RT
RNA – Railway Notification of Accidents Regulations^RT
RO – Rail Operator^RT
ROA – Right On Arrival^RT
ROAD – Railway jargon for railway line^RT
ROCE – Return On Capital Employed^RT
ROM – (1) Read Only Memory, (2) Regional Operating Manager
ROP – Rules Of the Plan
ROR – Rules of the Route^RT
ROS – Restriction of Speed ^RT
ROSCO – ROlling Stock leasing COmpany^RT
ROSIN – Railway Open System Interconnection Network (a European Project)^UoS
ROTP – Rules Of The Plan^RT
ROTR – Rules Of The Route^RT
ROW – Renewal Of Way^RT
RPI – (1) Retail Price Index, (2) Revenue Protection Inspector^RT
RPL – (formerly) Rail Property Limited: a subsidiary of the British Railways Board^RT
RPM – Route Performance Manager (organisation pre 24/02/97)^RT
RPPS – Rail Passenger Partnership Scheme^RT
RRI – Route Relay Interlocking^RT
RRIP – Route Relay Interlocking Processor^RT
RRNE – Regional Railways North East, now known as Northern Spirit^RT
RRNW – Regional Railways North West, now known as First North Western^RT
RS – (former) Railway Safety ^RT
RSA – Railway Study Association^RT
RSAB – Rolling Stock Acceptance Board^RT
RSABGP – RSAB Group which provides support to RSAB and projects^RT
RSAG – Railway Safety Advisory Group^RT
RSBS – Railway Standard Building Specification^RT
RSC – Railway Safety Case^RT
RSC – Railway Skills Council (Sector Skills Council for the Railway Industry)^UoS
RSCI – Real Staff Cost Increase^RT
RSF – Right Side Failure^RT
RSL – Rolling Stock Library^RT
RSRS – (former) Railtrack Safety Rating System^RailCons
RSSB – Rail Safety and Standards Board (formerly Railway Safety)^RailCons
RSTL – Rail Staff Travel Ltd (RT Travel Facilities: Pensions Management Ltd 1/2/97)^RT
RT – (1) Radiographic Testing, (2) Railtrack^RT
RT1A – (former) Railtrack Infrastructure Maintenance Contract^RT+UuS
RT1B – (former) Railtrack Track Renewal Contract^RT+UoS
RTA – Road Traffic Accident^RT
RTAC – (former) RailTrack Access Conditions^RailCons
RTFN – (former) RailTrack Fault Number^RailCons
RTG – (former) RailTrack Group PLC^RailCons
RTHQ – (former) RailTrack Headquarters^RailCons
RTIS – (former) RailTrack Information Systems^RailCons
RTLS – (former) RailTrack Line Standard^RailCons
RTLs – Road Traffic Lights^RT
RTMZ – (former) RailTrack Midlands Zone^RailCons
RTP – Real Time Protocols^UoS
RTPI – Real Time Passenger Information system (based on Global Positioning by Satellite [GPS] transmissions^RT
RTS – Rapid Transit System^RT
RTU – Remote Terminal Unit^RT
RUCC – Rail Users Consultative Committee(s): formerly the Transport Users’ Consultative Committee(s)^RT
RUPP – (former) Road Used as a Public Path^UoS
 

S...

S&C – Switches & Crossings^RT
S&F – Switches & Fittings^RT
S&SD –(1) Systems and Safety Department, (2) (former) Railtrack’s Safety and Standards Directorate^RT
S&SM – Safety and Standards Manager^RT
S&T – Signalling and Telecommunications^RT
S&TE – Signal and Telecommunications Engineer^RT
S.L/H – Short LeaseHold^RT
SA – (1) Sponsor’s Agent, (2) Safety Authority, (3) Signalling Assistant^RT
SAA – Station Access Agreement^RT
SAC – Station Access Conditions^RT
SAE – Society of Automotive Engineers^UoS
SAM – Switch Activating Mechanism^RT
SAP – Safety Assessment Panel^RT
SAT –Site Acceptance Test^RT
SB – Signal Box^RT
SC – Signalling Centre^RT
SCADA – Supervisory Control And Data Acquisition^RT
SCC – (1) Supervisory Control Centre, (2) Supplier Creation Co-ordinator^RT+UoS
Schedule 4 – The possession–planning regime^RT
Schedule 8 – The performance regime with TOCs^RT
SCHLID – SCHedule IDentity: TOPS term for a train schedule^RT
SCI – Standard Contract Interpretation^RT
SCM – Senior Contracts Manager^RT
Scot (SCOT) – Scotland^RT
SCS – Signalling Control System^RT
SCU – Signalling Compatibility Unit^RT
SCUK – Signalling Controls UK Ltd, now part of Westinghouse Signals Ltd^RT
SCW – Safety Critical Work^RT
SD – Standard Deviation^RT
SDA – (1) Solid state interlocking Data Appreciation, (2) Strategy, Design and Architecture group: an RTIS body^RT
SDH – Synchronous Digital Hierarchy^RT
SDR – Simplified Direct Reporting^RT
SDS – Signalman's Display System^RT
SDT – Service Disruption Threshold^RT
SEC – Southern Electric Company^RT
SEE – Systems Engineering Environment^RT
SETA – Signalling Eqipment Technical Agent^RT
SFO – Senior Fire Officer^RT
SFO – Station Facility Owner^RT
SFT – Stress Free Temperature^RT
SG – Special Ground^RT
SGT – Serco Gauging Train^RT
SHA – Safety Hazard Analysis^UoS
SHRT – South Hampshire Rapid Transit^RT
SI – Site Instruction^RT
SICA – Signalling Infrastructure Condition Assessment^RT
SIGTAN – SIGnalling equipment Technical Advice Notice^RT
SIGWEN – SIGnalling equipment Workshop Engineering Notice^RT
SIL – Safety Integrity Level^RT
SIMBIDS – SIMplified BI–Directional Signalling^RT
SIN – (1) Special Instruction Notice, (2) Special Inspection Notice, (3) Substance Identification Number or (4) Site Instruction Notice^RT
SINAC – Special Inspection Notice Action Complete^RT
SINCS – SIgnalling INCident System^RT
SINMON – Special Inspection Notice MONitor^RT
SIP – Strike–In Point^RT
SIPS – (1) Standard Infrastructure Performance System (Civil Engineering equivalent of PEARS), (2) Supplier Performance Monitoring System^RT
SIS – Staff Information System^RT
SITS – Security Incident Tracking System^RT
SIVS – Station Inspector Viewing System^RT
SLA – Service Level Agreement^RT
SLOA – Steam Locomotive Operators Association^RT
SLU – Standard Length Unit^RT
SLW – Single Line Working^RT
SMA – (1) Statistical Multiplexer Appreciation, (2) Strathclyde Manning Agreement, (3) Signalling Maintenance Assistant, (4) Single Manning Agreement^RT
SMART – (1) Signal Monitoring And Reporting to TRUST, (2) Specific, Measurable, Achievable, Realistic, Timebased^RT
SME – Signalling Maintenance Engineer^RT
SMFD – Systems Management Framework Design ^RT
SMG – Systems Management Group^RT
SMIC – Site Manager’s Information Compendium^RT
SMIS – Safety Management Information System^RT
SMOS – Structure Mounted Outdoor Switchgear^RT
SMS – (1) Safety Management Systems, (2) Signal Maintenance Standard^RT
SMT – Signalling Maintenance Testing^RT
SMTH – Signal Maintenance Tester’s Handbook^RT
SNCB – Société Nationale des Chemins de Fer Belges: Belgian national railways^RT
SNCF – Société Nationale des Chemins de Fer Français: French national railways^RT
SOCO – Scene Of Crime Officer^RT
SODA – Single Option Development Authority ^RT
SOWC – Shows Occupied When Clear^RT
SP – Single Phase ^RT
SP&SN – Single Phase and Switched Neutral^RT
SPA – Special Protected Area^RT
SPAD – Signal PAssed at Danger^RT
SPADMIS – Signal Passed At Danger throughout Information System^RT
SPADRAM – SPAD Reduction & Mitigation^RT
SpAg – Sponsors Agent ^RT
SPC – Senior Production Controller
SPI – Safety Performance Indicator ^RT
SPM – Senior Project Manager ^RT
SPOC – Single Point Of Contact ^RT
SPT – Signal Post Telephone^RT
SPTA – Strathclyde Passenger Transport Authority^RT
SPV – Special Purpose Vehicle (Project Management)^UoS
SPWEE – Safety Procedures for Working on Electrical Equipment ^RT
SQE – Safety, Quality and Environment ^RT
SQL – Structured Query Language ^RT
SR – ScotRail ^RT
SRA – Strategic Rail Authority ^RT
SRG – Safety Review Group^RT
SRI – Signalling Restructuring Initiative^RT
SRP – (1) Station Regeneration Programme, (2) System Review Panel, (3) Safety Review Panel, (4) Statutory Reporting Pack^RT
SRPTA – Technical Advisor nominated by SRP Secretariat^RT
SRS – Safety Responsibility Statement^RT
SRT – Sectional Running Time^RT
SSA – Station Specific Annexe^RT
SSAP – Statement of Standard Accounting Practice^RT
SSDC – Signalling Systems Direct Current^RT
SSG – (1) Safety Strategy Group, (2) Standards Steering Group, (3) Systems Strategy Group (for Information Systems projects)^RT
SSHA – SubSystem Hazard Analysis^UoS
SSI – Solid State Interlocking^RT
SSIC – Solid State Interlocking Controller^RT
SSIDES – Solid State Interlocking DESign^RT
SSIDWS – Solid State Interlocking Design WorkstationS^RT
SSIHA – SubSystem Interface Hazard Analysis^UoS
SSISIM – Solid State Interlocking SIMulator^RT
SSM – Safety Strategy Manager^RT
SSn–FTA – Subsystem Fault Tree Analysis^UoS
SSO – Special Stop Order^RT
SSP – (1) Signalling Supply Point^RT, (2) Standard Signalling Principle^RT
SSRB – Special Speed Restriction Board^RT
SSSI – Site of Special Scientific Interest^RT
SSTD – Solid State Train Describer^RT
STABS – Signalling and Telecommunications Area Budget System^RT
STAR – Signalling & Telecommunications Asset Register^RT
STEP – Safety, Teamwork, Excellence, Professionalism^RT
STN – Special Traffic Notice^RT
STO – Senior Technical Officer^RT
STOPS – Signalling and Telecommunications Outturn Processing System^RT
STP – Short Term Planning: one–off bids for train paths (see also Spot Bids)^RT
SVP – Safety Verification Plan^UoS
SW – Software^RT
SWA (swa) – Steel Wire Armoured (cable)^RT
Swap Body – a system for conveying road freight vehicle bodies on rail vehicles
SWELTRAC – South WEst London TRAnsport Conference^RT
SWIFT – (i) Structured ‘What IF?’ Technique: a process for assessing level of safety risk ^RT
SWIMCo – (former) South West Iinfrastructure Maintenance COmpany (now AMEC Rail)^RT
SWOT – Strengths, Weaknesses, Opportunities and Threats analysis^UoS
SWT – South West Trains^RT
SWTH – Signalling Works Testing Handbook^RT
SZ – Scotland Zone^RT
 

T...

T&H – Tottenham & Hampstead (Barking–Gospel Oak Junction)^RT
T&RS – Traction & Rolling Stock^RT
T&V – Tresspass & Vandalism^RT
TAA – Track Access Agreement^RT
TAC – Telecomms Appreciation Course^RT
TADS – Telecommunications Asset Database System^RT
TAG – Track Access Grant^RT
TAN – Track Access Notice^RT
TARDIS – TOPS Ancillary Retrospective Data Information Service^RT
TB – (1) Tokenless Block, (2) Trial Balance^RT
TBA – To Be Advised^RT
TBE – To Be Evaluated^RT
TBS – Transmission Based Signalling^RT
TBTC – Transmission Based Train Control^UoS
TBW – Temporary Block Working^RT
TC – Track Circuit ^RT
TCA – Track Circuit Actuator^RT
TCAID – Track Circuit Actuator Interference Detector^RT
TCB – Track Circuit Block^RT
TCF – Track Circuit Failure^RT
TCI – (1) Transportation Consultants International (now part of AEAT–Rail), (2) Track Circuit Interrupter ^RT
TCM – Time Cycle Maintenance^RT
TCN – Train Communications Network^UoS
TCOD – Track Circuit Operating Device^RT
TCP/IP – Transmission Control Protocol/Internet Protocol ^RT
TCS – (1) Traffic Control System, (2) Train Control System, (3) Train Crew Supervisor. ^RT+UoS
TD – Train Describer^RT
TDA – TRUST Delay Attribution^RT
TD–D – Data Course (Training)^RT
TDM – Time Division Multiplex^RT
TDMA – Time Division Multiple Access protocol ^UoS
TDMS – Title Deeds Management System^RT
TD–T – Transmission Course (Training)^RT
TE – Zone Telecommunications Engineer^RT
TEB – Telephone Enquiry Bureaux^RT
TEN – Trans–European Network^RT
TENS – Trans European Network Strategy^RT
TESCO – TEchnical Service COmpany^RT
TEU – Twenty Foot or Equivalent Unit (container length)^UoS
TFM – Trackside Functional Module^UoS
TGM – Transport Gateway Metro (services proposed for the Woolwich Rail Tunnel)^RT
TGV – Train á Grande Vitesse: French high speed train^UoS
TIC – (1) Technical Investigation Centre , (2) Track Inspection Coach , (3) Tester In Charge^RT
TID – Track IDentity^RT
TIIS – Train Infrastructure Interface Specification^RT
TIMI – TelecommunIcations Maintenance Instruction^RT
TIPS – Telecommunications Installation and Procurement Service^RT
TIR – Transports Internationaux Routiers^RT
TIS – (1) Traction Interlock Switch , (2) Traction Isolation Switch, (3) Train Information System (4) Track Isolating Switch^RT
TL – Through Line^RT
TL2000 – ThamesLink 2000^RT
TLC – Telephone protection only Level Crossing^UoS
TMD – (1) Traction Maintenance Depot, (2) Train Mass Detectors^RT
TMO – Train crew Manually Operated^RT
TMP – Traffic Management Plan^RT
TMS – Traffic Management System^RT
TNA – Training Needs Analysis (interviews conducted by BMIS team)^RT
TNM – Train Network Management^UoS
TO – (1) Team Organiser, (2) Technical Officer^RT
TOC – (1) Train Operating Company^RT(2) Test On Completion^RT
TOHD – TOPS Operations Help Desk^RT
TOL – Train On Line^RT
TOOS – Taken Out Of Service^RT
TOPS – Total Operations Processing System^RT
TORR – Train Operated Route Release^RT
TORUS – TransportOperations Rapid Update System
TOU – Train Operating Unit^RT
TOWS – Train Operated Warning System^RT
TP&SN – Three Phase and Switched Neutral: type of low voltage switch gear^RT
TPC – (1) Train Performance Calculator , (2) Trackside Processing Centre^RT
TPO – Travelling Post Office^RT
TPPP – Transport Policies and Programme Package (Central Government funding)^RT
TPS – Traction Power Supply^RT
TPT – Train Positioning and Tracking^RT
TPWS – Train Protection and Warning System^RT
TPWS+ – Train Protection and Warning System Plus for operation at speeds above 70mph^UoS
TPWS–E – Train Protection and Warning System based on Euro–balise technology^UoS
TPWSSA – Train Protection Warning System Sponsor's Agent^RT
TQ – Technical Query^RT
TQSUM – Track Quality SUMmary^RT
TRACA – TRAck Condition Assessment^RT
TRAMM – Track Renewal And Maintenance Machine^RT
TRB – (1) Train Recording Book, (2) Transportation Research Board (United States)^RT
TRC – (1) Track Renewals Company^{RT, (2)} Track Recording Coach^RT
TRE – Track Recording Engineer^RT
TRS – Train Ready to Start^RT
TRS – Train Reporting System^RT
TRTS – Train Ready To Start indicator^RT
TRU –(1) Track Recording Unit, (2)Track Renewal Unit^RT)
TRUST – Train RUnning Systems on TOPS^RT
TRV – Track Recording Vehicle^RT
TS&I – Technical Services and Innovation^RT
TSC – (1) Track Section Cabin^RT, (2) Train Service Code^RT
TSDB – Train Service Data Base^RT
TSR – Temporary Speed Restriction^RT
TSSA – Transport Salaried Staffs’ Association (a union for salaried staff)^RT
TSSU – Time Slot Sharing Unit^RT
TT – Time Table^RT
TTP – Time Table Processor^RT
TUPE – Transfer of Undertakings (Protection of Employment Regulations 1981)^RT
TVM – Transmission Voice Machine, French ATP system^UoS
TWA – Transport & Works Act^RT
TWE – Track Welding Engineer^RT
TWO – Transport and Works Order^RT
 

U...

UB – (1) UnderBridge , (2) Universal Beam^RT
UEL – Up Electric Lane^RT
UFL – Up Fast Line^RT
UFN – Until Further Notice^RT
UGL – Up Goods Line or Up Goods Loop^RT
UIC – Union Internationale des Chemins de Fer(international union of railways)^UoS
UM (UML) – Up Main (Line)^RT
UPL – Up Platform Line or Up Passenger Loop^RT
UPS – Uninterruptible Power Supply^RT
UPWSF – UnProtected Wrong Side Failure^RT
URFD – Ultrasonic Rail Flaw Detection^RT
URFDO – Ultrasonic Rail Flaw Detector Operator^RT
URL – Up Relief Line^RT
USL – Up Slow Line^RT
UT – Ultrasonic Testing^RT
UTU – Ultrasonic Test Unit^RT
UTX – Under Track Crossing^RT
UWC – User Worked Crossing^RT
UWG – public road crossing with User Worked Gates^RT
UWSF – Unprotected Wrong Side Failure^RT
UWTF – Unprotected Wrongside Telecommunications Failure^RT
 

V...

VAB – Vehicle Acceptance Board^RT
VAT – Value Added Tax^RT
VATT – Virgin Active Tilt Trains ^RT
VCB – Vacuum Circuit Breaker^RT
VCC – Virgin Cross Country^RT
VDP – Vertical Design Package^RT
VDU – Visual Display Unit for computers^RT
VLR – Visitors Location Register^UoS
VM – Value Management^RT
VNCAB – Vehicle and Network Change Approvals Board^RT
VO – Variation Order^RT
VOBC – Vehicle OnBoard Control^UoS
VPF (VOPF) – Value of Preventing a Fatality criterion^RT
VPI – Vital Processor Interlocking^UoS
VRAC – Vehicle and Route Acceptance Contract^RT
VRG – Virgin Rail Group^RT
VSTP – Very Short Term Plan^RT
VT – Virgin Trains^RT
VWC – Virgin West Coast^RT
 

W...

W – Watt^RT
W/m – Watt per Metre^RT
W/S – Work Station^RT
WA – West Anglia Lines^RT (Liverpool Street to Cambridge & Local Branches)
WACC – Weighted Average Cost of Capital^RT
WAGN – West Anglia Great Northern^RT
WAN – Wide Area Network^RT
WARC – West Anglia Route Controller^RT
WARM – West Anglia Route Modernisation^RT
WARP – West Coast Advanced Recovery Reliability Programme^RT
WBS – Work Breakdown Structure^RT
WCML – West Coast Main Line^RT
WCML RM – West Coast Main Line Route Modernisation^RT
WCRM – West Coast Route Modernisation^RT
WEN – Weekly Engineering Notice^RT
WESTRACE – WESTinghouse Radio Advance Control Equipment^RT
WI – (1) Warning Indicator, (2) Work Instruction^RT
WILD – Wheel Impact Load Detector^RT
WIP – Works In Progress^RT
WLL – West London Line^RT
WMP – Waste Management Plan^RT
WMPTA – West Midlands Passenger Transport Authority^RT
WMPTE – West Midlands Passenger Transport Executive^RT
WON – Weekly Operating Notice^RT
WR SSTD – Western Region Solid State Train Describer^RT
WSF – (1) Wrong Side Failure, (2) Wrong side Signalling Failure^RT
WSL – Westinghouse Signals Ltd^RT
WSO – Work Station Operator^RT
WSP – Wheel Slip Protection^RT
WTB – Wire Train Bus^UoS
WTF – Wrong side Telecommunications Failure^RT
WTT – Working Time Table^RT
WW – Wales and West Passenger Trains^RT
WWW – World Wide Web^RT
WYPTA – West Yorkshire Passenger Transport Authority^RT
WYPTE – West Yorkshire Passenger Transport Executive^RT
WYSIWYG What You See Is What You Get^RT
 

X...

XLPE – cross–linked polyethylene
 

Y...

YB2 – Yellow Book issue 2 (ESM)^RT
YTD – Year To Date^RT
 

Z...

ZCAM – Zonal Corporate Affairs Manager^RT
ZCRG – Zonal Commercial Review Group^RT
ZD – Zone Director^RT
ZEPE – Zone Electrical and Plant Engineer^RT
ZFC – Zone Freight Controller^RT
ZIAR – Zone Infrastructure Asset Register^RT
ZIP – Zone Investment Panel^RT
ZOC – Zone Operational Control^RT
ZPAM – Zonal Public Affairs Manager^RT
ZPUG – Zonal Possession User Group^RT
ZTE – Zone Telecommunications Engineer ^RT

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