Railway Abbreviations

RAILWAY ABBREVIATIONS Compiled by- RPS YADAV, SSE/RE/Allahabad Organizations & Corporations AIRF All-India Railwaymen's Federation (union organization) COFMOW Central Organization for the Modernization of Workshops CONCOR Container Corporation of India COOIS Central Organization for Operations Information Systems CORE Central Organization for Railway Electrification COS Central Office of Standards (predecessor of RDSO) CRIS Centre for Railway Information Systems CTC Calcutta Tramways Corporation DCW Diesel Component Works, Patiala DMRC Delhi Metro Rail Corporation Indian Railway Conference Association (body that issues inspection IRCA guidelines, allots wagon codes, inspects workshops) Indian Railways Construction Company, now IRCON International Ltd., IRCON which takes on contract work to build railways in other countries (Iraq, Nepal, Indonesia...). IRCOT Indian Railways Central Organization for Telecom IRCTC Indian Railways Catering and Tourism Corporation IREB Indian Railways Executive Board (proposed) IRFC Indian Railways Finance Corporation IRIATT Indian Railways Institute of Advanced Track Technology IRICEN Indian Railways Institute of Civil Engineering, Pune IRIEEN Indian Railways Institute of Electrical Engineering, Nasik IRIMEE Indian Railways Institute of Mechanical and Electrical Engineering, Jamalpur Indian Railways Insitute of Signal Engineering and Telecommunications, IRISET Secunderabad IRPS indian Railway Personnel Services (human resources) IRRA Indian Railways Regulatory Authority (proposed) IRSE Indian Railway Service of Engineers IRSEE Indian Railway Service of Electrical Engineers IRSME Indian Railway Service of Mechanical Engineers IRSS Indian Railway Stores Services (inventory control) IRSSE Indian Railway Service of Signal Engineers IRSTE Indian Railway Signal and Telecom Engineering IRTS Indian Railway Traffic Services (management, marketing) ISRS Indian Steam Railway Society ITB International Tourist Bureau (New Delhi) KRCL Konkan Railway Corporation, Ltd.

KRDC K-RIDE KRIST LRDSS MPT MRSP MRTS MRVC MTP MUTP NFIR RCIL RDSO ROMA RPF RSC

Konkan Railway Development Corporation Rail Infrastructure Development Corporation (Karnataka) Ltd. Konkan Railway Institute for Staff Training Long Range Decision Support System Mumbai Port Trust (see BPT) Model Railway Society of Pune Mass Rapid Transit System (Chennai) Mumbai Rail Vikas Corporation Metropolitan Transport Project (Railways), Bombay Mumbai Urban Transport Project (a World Bank project) National Federation of Indian Railwaymen (union organization) Railtel Corporation of India, Ltd. Research, Design and Standards Organization Railway Officers' Medical Association Railway Protection Force (also see below, Miscellaneous) Railway Staff College, Vadodara Rail India Technical and Economic Services, which takes on planning, RITES design, and operational work in other countries (Angola, Mozambique, Zimbabwe, Botswana, Mexico, Zambia, Nepal, etc.). RTRC Railway Testing and Research Centre (a predecessor of RDSO) RWWCO Railway Women's Welfare Central Organization RVNL Rail Vikas Nigam Ltd. SGE Siemens and General Electric Railway Signal Co., Ltd. WAP Wheel and Axle Plant, Yelahanka (also a loco classification :-) ) Technical acronyms ABS Automatic Block Signalling ACD Anti-Collision Device ARTS Data Manager (system for managing EPROMs and station ADAM configuration cartridges for ARTS) AE Automatic Emergency or Auto-Emergency (type of brake system) AFTC Audio Frequency Track Circuiting ATC Automated Train Control ATP Automatic Train Protection ATS Automatic Train Stop AVB Automatic Vacuum Brake ATS Automatic Train Stop BPC Brake Power Certificate (issued before train departure) BS Braking in Series configuration BSL Block Section Limit BSP Braking in Series-Parallel configuration CDO Coaching Depot CLS Colour-light signalling COCR Confirmatory Oscillograph Car Run COFC Container on flat car CTC Centralised Traffic Control CTR Complete Track Renewal

CWR DAC

Continuous Welded Rail (0.5km and longer sections of welded rail) Digital Axle Counter Design-Build-Finance-Operate (a scheme for private parties to build and run DBFO railway lines with IR's help) From the French disjoncteur, the main circuit breaker of an electric loco DJ (usually pneumatically operated, roof-mounted) DLBI Double Line Block Instrument DEMU Diesel-Electric Multiple Unit DETC Diesel-Electric Tower Car DHMU Diesel Hydraulic Multiple Unit (hydraulic transmission DMU) DMH Dead Man's Handle (on EMUs) DMU Diesel Multiple Unit DPC Driving Power Car Disconnecting Switch (to switch off OHE power to loco circuits, usually DS manual) DTC Driving Trailer Car (unpowered driving car in EMU rake) DW Double wire (of semaphore signals) EA Extra (time) Allowed (make-up time noted in working time-tables) ELCM Electronic Load Control Module (governor for DEMUs and other diesels). EMU Electric Multiple Unit EOG End-On Generator Car ETCS European Train Control System EY Empty (notation for empty rake in real-time train information systems) FM Fouling Mark Frequency-modulated Voice-frequency Telegraph (used for control FMVFT communications by signals / electric traction / traffic control staff) FOR Forward motion (position of master controller in loco) FP Fouling Point; also Feed Pipe (at couplings of vehicles) GTO Gate Turn-Off thyristor HEP Head-end Power (power from the loco for the coaches) HFTC High-Frequency Track Circuit HOBC High-Output Ballast Cleaner HOG Head-On Generator HHPDMU High-Horsepower Diesel Electric Multiple Unit HPDMU High-powered Diesel Multiple Unit HSCB High-speed Circuit Breaker HT High Tension HTCBC High Tensile-strength Centre-Buffer Coupler HTS High Tensile-strength Steel IGBT Insulated Gate Bipolar Transistor NTES National Train Enquiry System NX eNtrance-eXit (interlocking panels) OFC Optical Fibre Cable Supervisory Control and Data Acquisition (monitoring and control system for SCADA remote control of electric traction systems) SE Superelevation (of curved track) S/L Shunting Limit

SLBI SOD SPAD SPTM SSDAC SSI STR STRI SW SWR TAB TALQ TAWD TBTR TFR TLC TPC USFD

Single Line Block Instrument Schedule of Dimensions Signal Passed At Danger Self-Printing Ticket Machine Solid State Digital Axle Counter Solid State Interlocking Schedule of Technical Requirements Stencil type Route Indicator Single wire (of semaphore signals) Short Welded Rail (2-4 rails welded together in a section) Train Air Brake Two-Aspect Lower Quadrant Train Actuated Warning Device Through Bridge Timber Renewal Through Fitting Renewal Traction Locomotive Controller Traction Power Controller Ultrasonic Flaw Detection COMPUTER ABBREVIATIONS

ADM AIS APS ATM AUG BBE BBER BER BIP-2 BIP-N BSHR CAS CCM CMIP CSES DCC DCN DWDM DXC EBC ECC EDC EFS ES ESR FAS ISDN

Add/drop multiplexer Alarm indication signal Automatic protection switching (channels K1, K2) Asynchronous transfer mode Administrative unit group Background block error (G.826) Background block error ratio (G.826) Bit error ratio BIP-2 parity word in VC-1, 2 path (POH) Bit interleaved parity, N bits Bi-directional self-healing ring Channel-associated signaling Cross-connect multiplexing Common management information protocol Consecutive severely errored seconds Data communication channel Data communication network Dense wavelength division multiplexing Digital cross-connect Errored block count Embedded communication channel Error detection code Error-free second Errored second (G.826) Errored seconds ratio (G.826) Frame alignment signal Integrated services digital network

ISO LAN LOF LOM LOP LOS MSOH MTIE OAM OOF PDH PLL POH PRBS PRC QoS RDI REI ROSE RSOH SDH SES SESR SHR SMN SMS SOH SPRING STM STM-N STS TMN

International standardization organization Local area network Loss of frame Loss of multiframe Loss of pointer Loss of signal Multiplexer section overhead Maximum time interval error Operation, administration and management Out of frame Plesiochronous digital hierarchy Phase-locked loop Path overhead Pseudo-random binary sequence Primary reference clock Quality of service Remote defect indicator Remote error indicator Remote operations service element Regenerator section overhead Synchronous digital hierarchy Severely errored second Severely errored seconds ratio Self-healing ring SDH management network SDH management sub-network Section overhead Shared protection ring Synchronous transport module Synchronous transport module, level N= 1, 4, 16, 64 Synchronous transport signal Telecommunications management network ********************