Section 3 in The Calcutta Metro Railway General Rules, 2000

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State of West Bengal - Section

Section 3 in The Calcutta Metro Railway General Rules, 2000

3. Central Control.

- A signalling system is provided on all running and reception tracks and in the Car Shed Yard tracks except for a few tracks used mainly for local shunting. The signalling equipment on the running and reception track is designed to operate as a fully automatic system utilising a computer installed at the "Operations Control Centre (OCC)" and is supervised by the Traffic Controller. Routing and timing of train movement including the movements to and from the Car Shed are controlled by the computer according to specific time tables. If normal running of trains is disrupted, Computer control can be continued to despatch trains at fixed intervals instead of specific timetable. Facilities for manual setting of routes are also provided.3.01.2. Running tracks. - (i) Train Control System on running tracks normally operates in fully automatic mode except for manual operation of the coach doors by conducting Motorman and operation of the "Start" button at every station by the driving Motorman. Facilities are provided in the OCC for manual routing, hold trains at stations and automatic reversing of trains at the provisional terminal block stations in accordance with the information derived from the train describer system in addition to facilities provided in rule 3.01.1.(ii)At each station, a Station Master Panel is provided in the panel operation room with illuminated diagram to enable monitoring and control of station signalling system. These panels are normally inoperative but transfer of control to these can be done by the Traffic Controller to enable operation of trains in the event of signalling system failing to operate from OCC both automatically and manually.(iii)Driving of trains is controlled by Automatic Train Operation (ATO). The speed control of Train movement is effected by an Automatic Train Protection (ATP). Cab signals and other indications are provided in the Motorman's Console to enable the Motorman to monitor the train running and change to manual driving if and when needed.(iv)A 2-aspect wayside signalling system is also provided as a backup to the automatic System. When the trains are operated in automatic mode, these signals exhibit Auto aspect reminding the Motorman that he is to follow the cab signals. When manual station to station working is introduced, the 2-aspect signals are brought into use through local Station Master's Panel. The control of these signals is possible only from the local panel, but their indications are available on the mimic display panel at the OCC.B. General Provisions

3.02Signal. - Signal is an indication given to a driving motorman or a conducting motorman for controlling the movement of his train in all cases, except under approved special instructions.

3.03Kinds of signals. - The signals to be used for controlling movement of trains on running lines, in car sheds and sidings shall be -

(a)Cab Signals,

(b)Fixed Signals, and

(c)Hand Signals.

The aspects of the signals displayed by day and by the night shall be the same.

3.04Placing of fixed signals. - A fixed signal shall be clearly visible to the driving motorman of trains approaching it and shall be placed immediately over or to the right or left side of the line to which it refers unless otherwise authorised by special instructions.C. Description of signals

3.05Use of Signals. - (1) Use of Cab Signals - Train movements on the running track shall be governed by Automatic Train Protection codes which are displayed as speed indication in the leading driving motor cabs. These target speed indications provided in the driving cab are called speed codes.These speeds indicate the speed which should not be exceeded by the train at the exit of ATP block. Speed Codes other than '0' are called proceed codes.

(2)Use of fixed signals - Except under approved special instructions, the Metro Railway shall be equipped with fixed signals as specified in these rules.

3.06Colour light stop signals. - (1) All stop signals on the Metro Railway shall be colour light signals with aspects as explained in the pictures below.

(2)Short range colour light signals shall be installed in tunnel sections, normally mounted at driving motorman's eve level.

3.07Fixed stop signals for admission of approaching trains. - (1) A home signal shall be located outside all connections on the line to which it refers.

(2)Where necessary, additional inner home signal may be provided.

(3)Unless otherwise permitted by special instructions, where two or more lines diverge, the stop signal shall be provided with approved type of route indicator.

3.08Fixed stop signals for departing trains. - (1) A starter signal shall be fixed at the limit beyond which no train may pass unless the driving motorman is given an authority to proceed under the system of working.

(2)A starter signal should be placed outside all connections to which it refers except at stations where block section commencement boards are provided.

(3)Shunting operation beyond the starter shall be carried out only in accordance with special instructions.

3.09Combination of signals. - Under approved special instructions, a colour light home signal may be combined with the starter signal of a station in rear. When so combined, the arrangements shall be such that the combined signal shall display 'ON' aspect until conditions for taking 'OFF' both the signals have been fulfilled.

3.10Placing of more than one signal on the same post. - Not mere than one signal referring to trains moving in the same direction, whether on the same line or on separate lines, shall be placed on the same post, except for subsidiary signals.

3.11Calling on Signal. - (1) Calling on signal is a subsidiary signal which when taken 'off' calls on the motorman to draw the train ahead with caution after the train has been brought to a stop even though the stop signal above it is at "ON" and indicates to the motorman that he should be prepared to stop short of any obstruction.

(2)Calling on signal, where provided, shall be fixed below a stop signal governing the approach of a train. Under approved special instruction, calling on signal may be provided below any other stop signal" except the last stop signal.

(3)A calling on signal shall show "no" light in the "ON" position.

(4)The aspects of the colour light calling on signal are shown below.

3.12Shun't signals. - (1) A shunt signal is a subsidiary signal for controlling shunting movements and shall be a position light type signal. It may be placed on a post by itself or below a stop signal other than home signal.

(2)The aspects and indications of a shunt signal are shown below.

(3)More than one shunt signal may be placed on the same post and when so placed, the top-most shunt signal shall apply to the extreme left hand line and the second from the top to the next line from the left and so on.

(4)A shunt signal placed below a stop signal shall show no light in '0N' position.

(5)Where shunt signals are not provided, hand signals may be used for shunting.

3.13Repeating signals. - (1) A signal placed in rear of the fixed signal for the purpose of repeating to the driving motorman of an approaching train the aspect of the fixed signal in advance is called repeating signal.

(2)A repeating signal shall be a colour light signal provided with 'R' marker.

(3)The aspects and indications of a colour light repeating signal shall be as shown below :

3.14Electric repeater. - The aspect of any fixed signal which cannot be seen from the place from which the signal is worked shall be repeated to such place by means of an electric repeater.

3.15Point Indicator. - Point Indicator where provided shall show a miniature white light in both directions when the point is set for the straight and a miniature green light in both direction when the point is set for the turnout.

3.16Daparture regulation light. - Departure regulation light shall be provided at the departure end of each station platform to assist in regulating the traffic.

3.17Signals out of use. - (1) When a fixed colour light signal is not in use, it shall be distinguished by two crossed bars, each bar being not less than 30 cms. long and 10 cms. wide.

(2)Signals not in use shall not be litD. Equipment of signals

3.18Obligation to provide signals. - (1) Obligation to provide signals at stations and line - In all sections provided with CATC, the signalling equipment on the running track shall normally operate in fully automatic mode. The movement of the trains shall be monitored by the leading motorman in these sections through Cab Signals displayed in the Motorman's Console.

(2)Obligation to provide fixed signals at stations and carshed cabins - In addition to cab signals, fixed signals as necessary shall be provided at block stations. On sections however where trains are worked on "One train only system", fixed signals as necessary or "Stop and proceed" boards in lieu thereof shall be provided in accordance with approved special instructions. In addition to the station signals, cab signals are necessary to provide the authority to proceed in case of CATC working.

3.19Minimum equipment of fixed signals at stations and carshed cabins. - (a) Home and starter signals shall be provided at intermediate block stations and provisional terminal block stations.

(b)Home signal and starter signal in opposite direction shall be provided at a terminal block station.

3.20Additional fixed signals provided at stations and cabins generally. - In addition to minimum equipment of signal prescribed in rule 3.19 above, such other fixed signals shall be provided at every station as may be necessary for the safe working of trains.

3.21Commissioning of fixed signals and cab signals. - Cab signals and fixed signals shall not be brought into use until they have been passed by the Commissioner of Railway Safety Metro Circle as being sufficient to secure the safe working of trains.

3.22Signals at non-block stations. - Signals may be dispensed with and trains may be stopped in such manner as authorised by special instructions.E . Working of signals and points

3.23Cab signals generally. - Train movements in the running track shall be normally governed by Automatic Train Protection (ATP) codes which are displayed as target speed indications in the leading driving cab. These target speed indications ensure that there shall always be sufficient unoccupied track in the event of an emergency brake application for the train to stop clear of any other train or obstruction ahead.

3.24fixed signals generally. - (1) Every fixed signal shall be so constructed that in case of any type of failure, it shall remain at or return to its most restrictive aspect.

(2)A stop or shunt signal which has been taken "off" for a train shall not be placed "on" until the whole of the train has passed it, except -

(a)in case of emergency, or

(b)where the signal goes to 'on' aspect automatically by the passage of train, the control operating the signal shall not be restored to its normal position till the whole of the train has passed it.

(3)Mo fixed signal within station limits shall be taken 'off' without the permission of the Station Master or Traffic Controller or such person as may, for the time being, be in independent charge of the working of such signal.

3.25Normal aspect of signals. - Train operation shall normally be in CATC node and Auto" aspect shall be normally lit. When working in manual mode, the fixed signals shall show their most restrictive aspect in their normal position.

3.26Points affecting movement of a train. - A signal shall not be taken 'off' for a train until -

(a)all points over which the train will pass are correctly set and all concerned facing points locked, and

(b)the line over which the train will pass is clear and free from obstructions.

3.27Looking of facing points. - Facing points for passage of trains shall be either inter-locked or key locked or shall be clamped and pad-locked.

3.28Conditions for taking 'off' home signal. - When trains are running in ATO or CMM or RMM mode, the Home Signal at all stations will normally exhibit the "Auto" aspect reminding the driver that train running is governed by cab signals. In 'OFF' mode, the absolute block working will have to be resorted to and trains will be guided by manual aspects as under:-

(a)At all stations, the home signal shall not be taken off until the train has been brought to a stop outside it unless the line is clear for an adequate distance beyond the starter, or at a terminal station adequate distance beyond the place at which the train is required to come to a stand.

(b)At terminal stations where adequate distance beyond the place where the trains normally come to a stand is not available, the home signal, or inner home signal where provided, shall be taken 'off after the train has first been brought to a stand outside it and the line is clear up to the place at which the train is required to come to a stand.

(c)The adequate distance referred to in clause (a) shall not be less than 180 metres except under approved special instructions.

3.29Conditions for taking 'off' starter signal. - (1) When the trains are running in ATO or CMM mode, the Starter Signal at all stations will normally exhibit the "Auto" aspect reminding the driver that train running is governed by cab signals. In other cases, the. absolute block working will have to be resorted to and trains will be guided by manual aspects.

(2)In the event of absolute block working -

(a)A starter signal shall not be taken 'off' for a train unless permission to approach has been received from the block station in advance.

(b)A starter signal shall not be taken 'off' for shunting purposes.

3.30Condition for taking "off" calling on signal. - A calling on signal shall not be taken off until a train has been brought to a stand at the stop signal below which the calling on signal is provided.

3.31Lighting of signals. - (1) All fixed signals and indicators shall be kept lit throughout the day and night.

(2)Sub-rule (1) shall not apply to approach lit signals and Repeating signals while the 'section is in "Auto" mode.

3.32Fixed Red Lights. - Fixed red lights shall be provided on terminal platform tracks, siding and car shed tracks to indicate the farthest points beyond which no train or shunting movements may be permitted.

3.33Departure Regulation Light. - The blue light is approach lit when the train enters the platform and the section is in "Auto" mode and will remain lit as long as the train is required to stop at the station. The Traffic Controller can put the DRL to disuse without affecting train Operations if no regulation is intended.

3.34Stop Board. - Stop Board of specified design shall be provided on platforms so as to be visible to the driving motorman of an approaching train, indicating the location where the train shall be brought to a stand for detraining and entraining of passengers.

3.35Block Section Commencement Board. - Block Section Commencement Board is a board (as shown below) which when provided denotes the commencement of a block Section, and indicates the limit beyond which a train shall not proceed unless it has received the authority to proceed into the block section.

3.36Traps and other points. - The Station Master shall take steps to ensure that all traps and other points are set against the line which they are intended to isolate.

3.37Points. - (1) All points shall normally be set for the straight except when otherwise authorised by special instructions.

(2)No Metro Railway servant shall interfere with any points, signals, or their fittings or any interlocking or other connecting gears for the purpose of effecting repairs, or for any other purpose except with the previous permission of the Station Master.

(3)The Metro Railway servant concerned with the operation of points and signals shall not, while on duty, leave the place of operation of points and signals under his charge except as authorised by special instructions.F. Hand Signals

3.38Exhibition of hand signals. - (1) Hand signals shall be normally given by hand signal lamps capable of displaying red, green and white aspects. When by flag, these would be of red and green colour.

(2)Hands shall be used in emergencies only.

(3)A white light waived violently shall be used as a stop signal in the absence of red light.

(4)An incorrectly given hand signal shall be regarded as danger signal.

3.39Methods of display of hand signals for controlling train movement. - Methods of display of hand signals for controlling train movement and indications, are explained below:-Indication

(1)Stop Dead

(1)	(2)	(3)
Display o Red Light	Raising of both arms	Waiving of white lightviolently

(2)Proceed - Display of green light steadily

(3)Proceed with caution - Waiving of green light vertically Up and Down

When the speed is to be reduced further, thissignal shall be given at a as lower and slower rate and when astop is desired, the stop hand signal shall be shown

3.40Hand signals for shunting movements. -

(1)	To move away from the person signalling.	By waiving green light slowly Up and Down.
(2)	To move towards the person signalling.	By waiving a green light from side to side across the body.
(3)	To move slowly for coupling.	By holding a green light above the head and twisting thewrist.
(4)	To stop dead.	By showing red signal.

3.41Knowledqe and possession of hand signal. - (1) Every Metro Railway servant connected with the movement of trains, shunting operations, maintenance of installations and works of any nature affecting safety of trains shall have -

(a)a correct knowledge of hand signals, and

(b)the requisite hand signals in good working order with him and ready for immediate use while on duty.

(2)Every Station Master and other supervisory staff shall see that the staff under him concerned with use of hand signals are supplied with necessary hand signalling equipment and have a correct knowledge of their use.

3.42Duties of Station Master generally when a signal is defective. - (1) As soon as a Station Master becomes aware that any signal or indicator has become defective or has ceased to work properly, he shall -

(a)immediately arrange to place the signal at 'ON' position if it is not already in that position.

(b)report occurrence to the traffic controller who shall inform Metro Railway servant responsible for the upkeep of the signals.

(2)When a Station Master receives information of any defect in a signal not within his station control limits from a driving motorman or any other Metro Railway servant, he shall immediately inform the traffic controller who shall advise the signal maintenance staff and also the Station Master concerned.

(3)When the approach signal is defective, the Station Master shall -

(a)advise the station in rear to caution the driving motormen of approaching trains,

(b)inform the traffic controller on duty about the arrangements for receiving trains, and

(c)after ensuring that the conditions for taking off approach signal have been fulfilled, advise the traffic controller to permit the driving motorman of the approaching train on radio telephone to pass the defective signal in accordance with special instructions.

(4)When a departure signal is defective, the Station Master after ensuring that the conditions for taking 'off' starter signal have been fulfilled -

(a)depute a flagman to hand over the written authority to proceed to the driving motorman and show hand signals for the train to start, and

(b)keep the traffic controller informed about the defective signal.

3.43Intimation to officials when defects remedied. - As soon as a defective signal has been put into good working order, the Station Master shall intimate the fact to the officials who were advised of its being defective.

3.44Absence of a signal or a signal without light. - (1) If -

(a)there is no signal at a place where it ordinarily exists, or

(b)the light of a signal is not burning when it should, or

(c)the aspect of a signal is misleading or imperfectly shown, or

(d)more than one aspect is displayed, the driving motorman shall act as if the signal is showing its most restrictive aspect.

(2)At signals equipped with 'R' marker, and when absolute block working is in use, the driving motorman shall bring his train to a stand, if it does not show any light or show an imperfect aspect, and having satisfied himself that the signal is provided with a 'R' marker shall proceed preparing to stop at the next stop signal and shall be guided further by its aspect.

(3)When the trains are worked on CATC system, the motorman shall observe rule 3,47(d).

3.45Defective or damaged point. - (1) Whenever points, crossings, or check rails are defective or damaged, the Metro Railway staff in-charge of operation of points shall immediately arrange to report the circumstances to the Station Master.

(2)The Station Master on becoming aware of such defect or damage, shall -

(a)inform the traffic controller about it, and arrange to have the defect rectified by the person responsible for its maintenance;

(b)personally ensure safe passage of trains, after setting and locking of facing points, and

(c)arrange to keep the signal or signals concerned at ON' position until the defect is rectified.

3.46Duties of driving motorman in respect of signals. - (1) The driving motorman shall be vigilant and cautious and pay attention to and obey every signal whether the cause of the signal being shown to him is known to him or not.

(2)When he notices any unsafe condition, he shall immediately bring his train to a stop and after informing the conducting motorman and the traffic controller, proceed exercising great caution so as to stop short of any obstruction. He shall report the incident in writing at the next station on arrival.

(3)Every driving motorman shall acquaint himself with the system of working, location of signals and other local conditions affecting the running of trains on the section over which he is required to work.

3.47Duties of diving motorman when approach signal is 'ON' or defective. - The driving motorman shall not pass such signals and

(a)bring his train to stand,

(b)contact the traffic controller on radio or emergency telephone seeking permission from the Station Master to pass the signal, and

(c)proceed past such signal at a restricted speed after proper authorisation in accordance with special instructions.

(d)When trains are worked under CATC system and "Auto" aspect becomes defective with home signal exhibiting no light at the station, the driving motorman may proceed on indication of Cab Signal. He may inform the Traffic controller of the above defect immediately. In the event of failure of Cab Signal in addition to "Auto" aspect the driving motorman shall treat the home signal as at "ON" and shall take action as laid down in sub para (a), (b) and (c) above.

3.48Duties of driving motorman when departure signal is defective. - The driving motorman shall not pass the starter in 'ON' position or a defective starter unless -

(a)the train has been brought to a stop at the station,

(b)a proper authority to proceed under the system of working is received by him, and

(c)a proceed hand signal is given in accordance with special instructions.

(d)when trains are worked under CATC system and "Auto" aspect becomes defective with departure signal exhibiting no light at the station, the driving motorman may proceed on indication of Cab Signal. He should inform the Traffic Controller of the above defect immediately. In the event of failure of the Cab Signal in addition to "Auto" aspect, the driving motorman shall treat the departure signal as at 'ON' and still take action as laid down in sub para (a), (b) & (c) above.

3.49permission before entering a running line. - No driving motorman shall take his train on any running line or cross it until he has obtained permission of the Station Master in the manner as may be specified and has satisfied himself that all correct signals have been shown.

3.50Reporting of defects in signals. - If a driving motorman observes that a signal light is imperfectly visible or partially obscured, he shall report the matter to the traffic controller on duty who shall take steps to inform the Station Master and also advise the persons concerned to get it rectified immediately.Chapter - IV Working of Trains GenerallyA. Timing

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State of West Bengal - Section

Section 3 in The Calcutta Metro Railway General Rules, 2000

3. Central Control.