CONTENT:

Turn over Time Now causalities rate SOURCE: Explanatory Memorandum on Railway Budget, 06-07

RAILWAY SIGNALLING:- Railway signalling is a system used to control railway traffic safely, essentially to prevent trains from colliding. Mainly there are two types of signals:-  Mechanical signals:- Older forms of signal displayed their different aspects by their physical position.  Colour light signals:-On most modern railways, colour light signals have largely replaced mechanical ones

These signals are controlled by pannel which is situated in ASM office Controlling of signals:-

DescriptionCodeColourRemarks Main Signal ButtonS-5REDEntrance Button Track /Route ButtonS-6GREYExit Button Level Crossing ButtonS-7BLUEOperated with S-6 Group Slot ButtonS-8GREENFor giving group slot Point Group ButtonS-9WHITETo point out location Emergency ButtonS-10R+GIn emergency Some keys of pannel:-

" An arrangement of signals and signal appliances in the manner that they switch the tracks to send the train in particular direction.

Route Relay Interlocking It is also called “NX” system. It is based on entrance/exit principal. In this every operation requires only two buttons to be kept press simultaneously.

1.The horizontal line is railway track. 2.signals are depicted by the symboof the circle with a horizontal and vertical line.

Red slotted line indicating train moving direction Lds:-last down signal.

DATA LOGGERS  The process of using a computer to collect data through sensors, analyze the data and save the data is called Data logging and the instreument used in this called data loggers.  Data logger is a microprocessor-based system which monitors and records all activities and event in the signalling system of a railway station/yard.

THIS CONSISTS OF:  DATA LOGGER EQUIPMENT (DLE).  DIGITAL INPUT CABLE (DIC)  A MONITORING P.C.  A FAULT INDICATOR UNIT. POWER SUPPLY: DLE WORKS ON 24V. D.C. AND THE P.C. ON 230V. A.C. DATA LOGGER SYSTEM:-

21 DATA LOGGER EQUIPMENT RACK DLE Enclosure Modems Display Unit Spike Suppessor (For ac modems) AI Enclosures

D L E Dot Matrix Printer 230VAC UPS Inkjet Printer 24VDC Charger 24V BATTERY FAULT INDICATOR UNIT 230VAC, 50Hz DATA LOGGER SYSTEM

Integrated Power Supply System :- The IPS systems provide complete power solutions from one system to all signaling circuits. There are three panels on the IPS AC Distribution Panel (ACDP) DC Distribution Panel (DCDP) FRBC Panel (FRBCP)

 Alstom Signaling Inc.  General Railway Signal Co.  Calvert, J.B. "Principles of Interlocking.“  “At your doorstep"The Hindu.  Station working rules(swr)  Economic Times. July 7, 2011.