Railway Signalling

Railway Signal System

[Railway Signalling @IR_Signals]

For more information Indian Railways Signal Emgineering Manual may be seen.

[Railway Signalling @IR_Signals]

*ISOLATION IN RAILWAY SIGNALLING:*

Isolation is provided so that a movement of a train is separated from all adjoining lines connected to it in such a manner that it cannot be fouled or interfered by any movement taking place on the adjoining lines .

[Railway Signalling @IR_Signals]

Means Of Isolation:

[Railway Signalling @IR_Signals]

#TrainAccident

However the exact cause can only be identified after detailed investigation and enquiry.

[Railway Signalling @IR_Signals]

What could be the reason?
- As the accident appears to be in the block section of double line (not in Station Section); SPAD (Signal Passing at Danger) appears to be most probable reason.

[NDTV @ndtv]

🔴#NewsAlert | Sealdah-bound Kanchenjunga Express derails at Rangapani station near Jalpaiguri. More details awaited.

#WestBengal

[Railway Signalling @IR_Signals]

There are two loco pilots in the train engine. So missing the signal by both is rare.
And yes, Kavach ( or ETCS, TPWS and other such systems) would have prevented this accident.

ETCS: European Train Contol System
TPWS: Train Protection and Warning System

[Railway Signalling @IR_Signals]

@Railwhispers @DrmJhansi @RailMinIndia Kudos to Sr DOM and DOM saab for installing all signals, MSDAC, EI, Power supply system for Automatic Signalling. Not only that IR will be thankful to them for all the testing, FAT and SAT and commissioning.

What the useless Dy CSTE was doing? 😏😂

[Ministry of Railways @RailMinIndia]

Facilitating better speed, increasing safety & operational efficiency with electronic interlocking signals.

[Ministry of Railways @RailMinIndia]

Putting safety in every stride.

Increased LC gate interlocking(s) commissioned.

[Craig Munday @CraigMunday1]

Sunrise on the branch. @IR_Signals @RailwayMagazine @networkrailwest

[Railway Signalling @IR_Signals]

Permissive Railway Signals are identified by:

Color light Signal: a ‘P’ board on the Signal post.

Semaphore Signal: Fish tail on the arm of signal.

[Railway Signalling @IR_Signals]

On basis of uses Signals are classified as

-Stop Signal: it has Danger aspect. Train must stop at Danger aspect .

-Permissive Signal: It doesn’t have Danger Aspect. Train will pass this signal.

[Railway Signalling @IR_Signals]

In colour light Signalling there may be an extra condition called “attention”.

Red-R-Danger
Yellow-Y-Caution
Double Yellow-YY-Attention
Green-R-Proceed

[Railway Signalling @IR_Signals]

Semaphore Signals may be of two type. Lower Quadrant (LQ) conveying only two condition or Upper Quadrant(UQ) Conveying three conditions. Conditions indicated are Danger, Caution or Proceed.

[Railway Signalling @IR_Signals]

Semaphore Signals

[Railway Signalling @IR_Signals]

Signals Based on there aspect type:
Semaphore Signals
Color Light Signals

[Railway Signalling @IR_Signals]

SIGNAL: A Signal indicating a Condition indicating a condition affecting the movement of Train.