No official Railway Board PDF has been traced for this entry yet. The text below was read from the document held in the library.
| Type | Commercial Circular |
|---|---|
| Topic | reservation |
• When a Shunt Signal is placed below a Stop Signal, it shall show
CLI - 01 Basics of Signaling, MACLS, SIP & SEM Need for Signaling in Railways : • Running trains safely by securing it`s intended path. • Handle more trains effectively. • Unambiguous & Timely Communication to Loco Pilot for regulating speed of train. • The Train Loco Pilot is very much dependent on the aspect of the signal for controlling the speed of the train. Railway Signalling conveys the following • Timely information to Loco Pilot for regulating speed of his train. • Information is conveyed by a signal showing various aspects. . Many signals are interlinked for giving prior information. A signal ensures • Physical clearance of intended path. • Securing various points in the path. • Closure of Level crossing gates. • No other train is moving in this path. S30 HR Circuit CH2 LPR CH2 FR CH3 FR SH10 ASPR2 SH23 ASPR1 20 RWKPR1 19 RWKPR1 S30 UECPR S30 HR 24 CH3 LPR S28 DR S30 UECPR S30 UGR S27 HECR 12 S30-ULAT RWKPR1 NRPR 12B 11 11B 26-28T TPPR NWKPR2 TPPR TPR S26 HECR S28 DECPR S28 DECPR S30 S30 S30 S30ACO 22 UYR1 UYR2 JSLR CAR LXPR S30 HR 19 NWKPR1 28 OVSR 28 OVSPR1 28 OVSPR2 UM TPR S28 RECR S30-UMT NRPR 12 NWKPR2 S30 GNR1 20B TPR 30 TPR S30 ASPR2 S30 ASR S30 TSR S30 UCR A 19 RWKPR1 20 RWKPR1 12 NWKPR1 12 RWKPR1 11 RWKPR1 11 NWKPR1 19 RWKPR1 20 RWKPR1 S1A ASPR1 12 NWKPR CH1 FR CH1 LR 19 27 27 27 UL 15KL 15 12A S27 12 S30-ULT 20 RWKPR1 OVSR OVSPR1 OVSPR2 TPR NWKR KLPR TPPR RECR NWKPR2 RPR NWKPR1 20 19 20 19 S30 S30 S30 S30 22 S30 NWKPR1 TPPR NWKPR1 NWKPR1 UGR UECPR UCR UCR LXPR1 ASPR1 N B7/09 B8/09 19 NWKPR2 18 RWKPR1 S28 HECR 26 26OV 26OV 20A OVSR SPR1 SPR2 TPPR S28 DECR 18A/B TRSR2 18A/B TRSR1 18A 18B TPPR TPPR1 13 RWKPR2 13B TPR 11A TPR S30-CLAT NRPR 11 RWKPR2 20 RWKPR1 18A/B TRSR CL 13A S26 TPR TPPR RECR 13 NWKPR2 S30-CLT NRPR B24 Version1.0 Interlocking रे ९ रे. A nat ee ae (07 — Interlocking A ६... ९५८ Gon Yh ie ) om o £ £ 2 ¢ i M | ™ am =a ae | cate Léa | | anti * कै १ Cabin Block Instruments Further developments • The next development was the Track Circuit that could detect, in a safe manner, that a section of track was not occupied by any rail vehicles. D C C lo s e d T r a c k C ir c u it 1 T 1 T R Track Circuit Track circuits enabled introduction of automatic signals, worked solely by the operation of track circuits. Automatic Signalling was introduced in Mumbay area during 1928. Further developments (contd) • The manual operation of points and signals imposed a limit on the distance up to which a cabin could control them.. • Invention of electrical point machines and electrical signal machines removed this restriction. • Axle counters were first introduced in the 1960s in Germany Further developments (contd) LED Signals, using a cluster of LEDs, have been in use since 2001. They have much longer life & are practically maintenance free. Further developments (contd) • Invention of electromechanical relays, along with the introduction of Colour Light Signals and electric point machines enabled use of Relay Interlockings operated from Panels provided with Push Buttons and illuminated indications. Further developments (contd) RELAY INTERLOCKING 2 Se ee ce धर थक न : et el BY ae जि जिद by हे है ey. “a A Sag al en ca ae गे: Le) (छा कि) A Ba ना न ५ iy) लाए oe 9: epee i) el wa m4 | eg के aa तू) पे हू. | | i) \ =A है '. ऊ. ः Electronic Interlocking Second generation processor-based interlockings are known by the term "Computer Based Interlocking" (CBI), of which MicroLok (trademark of Union Switch & Signal, now Ansaldo STS), Westlock and Westrace (trademarks of Invensys Rail) and Smartlock (trademark of Alstom) are examples. Solid State Interlocking (SSI) is the brand name of the first generation Microprocessor- based interlocking developed in the 1980s by British Rail, GEC-General Signal and Westinghouse Signals Ltd in the UK Furth
Extract shown above; the full text is available in the search app.
Open this circular in the search app · Search all 4,025 documents