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SIGNALLING

All over the world Railway transportation is increasingly used, as this mode of transport is more energy efficient and environmentally friendly than road transportation. Since the load carried by the trains and the speed which the trains can attain are high, they need more braking distance before coming to the stop from full speed. Without signal to be available on the route to constantly guide the driver, accidents will take place due to collisions.

 

There are basically two purposes achieved by railway signalling.-

1. To safely receive and despatch trains at a station.- Different electrical means like Track circuits, lever locks, relays, Axle counters, Dataloggers, Panels, Contactors, different kinds of batteries, chargers, generators, Block instruments, solid state interlocking devices etc are integrated in a manner that ensure safety.

2. To control the movements of trains from one station to another after ensuring that the track on which this train will move to reach the next station is free from movement of another train either in the same or opposite direction. This Control is called block working. Preventing the movement from opposite direction is necessary in single line track as movements in both directions will be on the same track.

 

TYPES OF SIGNALING
Signalling can be of any one/combination of the following types

  • Mechanical signalling
  • Electro-mechanical signalling
  • Panel Interlocking
  • Route Relay Interlocking
  • Electronic Interlocking
  • Centralized operations& Signals by SM Control

DIFFERENT NAMES GIVEN TO SIGNALS

  • Shunt signal

 

  • Starter signal (Dispatch signals) 

 

  • Home signals (Reception signals)

 

  • Calling ON Signal

 

  • Distant Signal (Permissive signal)

 

 

BRIEF PARTICULARS OF SIGNALLING ASSETS IN BANGALORE DIVISION

Sl.No

Description

Total No.

1

Number Of Stations

104

2

Number of Standard I Interlocked stations

2

3

Number of Standard II Interlocked stations

87

4

Number of Standard III Interlocked stations

15

5

Number of Rudimentary Interlocked stations

0

6

Number of RRI Stations

40

7

Number of Panel Interlocked stations

37

8

Number of Electro-Mechanical stations Centralised operation with SM’s Control

0

9

Number of Electronic Inter Locking stations

25

10

Number of Mid section Interlocked LCs

101

11

Number of Traffic inter locked LC gates

62

12

Number of Mid sectionLCs provided with Magneto Phones

181

13

Number of Aspects provided with Triple Pole Lamps

0

14

Number of Battery charger voltage Monitors provided at stations

3

15

Number of stations provided with Calling-On Signals

92

16

Number of stations provided with Integrated Power Supply

99

17

Number of Tokenless/Token Block instruments

a) Diodo

54

b)S/L Tokenless PTJ make

62

c)D/L Tokenless SGE Type

88

d)Token - Neale's Ball Type

0

e)Token- Neale's Tablet Type

1

19

Number of signals provided with Solar Panels for lighting

15

20

Number of LED aspects provided for signals             

2102

21

Number of Interlocked Points

1053

22

a. Electrical Point Machines (IRS Type)

1053

b. Rod working

0

c. HP Lock

65

23

Number of Track Circuits

2216

24

Number of Signalling Units

105991

25

Number of sections BPAC provided

90

26

Number sections IBS provided.

2

27

Number stations Second distant signals

15

28

Number of stations Data loggers provided

103

29

Number of stations Generators provided as stand by Power supply

79

 

Apart from the regular maintenance work, the division has taken up various innovative works for implementation of advance technologies like-

  • Networking of Dataloggers for not only enabling preventive maintenance by study of performance parameters but also for online tracking of train movements on over division..
  • Provision of communication from mid section/accident site to the Division HQs using only one pair of copper conductor from the existing Emergency socket network during emergencies. 
  • Provision of Real time monitoring of Relief and Rescue operations from accident site and rendering prompt assistance.
  • Provision of ON line Train Running Information Display system, coach guidance systems, Train arrival/Departure Display system for the benefit of the travelling public. 
  • Provision of Voice Logger between controller and station masters.




Source : South Western Railway CMS Team Last Reviewed on: 23-10-2017  


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