IB Signal in Railway Quiz and Flashcards

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Questions and Answers

What is the purpose of a distant signal?

To provide a backup signal in case of a main signal failure

To inform the driver about the condition of the track ahead

To control the speed of trains approaching a station (correct)

To indicate the location of the next signal

What is the difference between a facing point and a trailing point?

Facing points are manually operated, while trailing points are automatically controlled.

Facing points direct the train towards the main line, while trailing points direct the train towards a siding. (correct)

Facing points are located before a signal, while trailing points are located after a signal.

Facing points can be used to change the direction of the train, while trailing points cannot.

What is the purpose of a calling-on signal?

To indicate the location of the next signal

To allow a train to proceed slowly into an occupied section of track (correct)

To control the speed of trains approaching a station

To provide a backup signal in case of a main signal failure

What is the purpose of a shunt signal?

To allow a train to shunt or move slowly within a yard or siding Signup and view all the answers

What should a driver do if an IB (Intermediate Block) signal is defective?

Stop the train and wait for instructions from the signaler Signup and view all the answers

What are the main rules that pilots must follow?

All of the above Signup and view all the answers

What color light is displayed when the Calling On signal is taken 'OFF'?

Miniature yellow Signup and view all the answers

What is the indication of the Calling On signal when taken 'OFF'?

Stop and then draw ahead with caution and be prepared to stop short of any obstruction Signup and view all the answers

On which occasions can the Calling On signal be used?

B & C Signup and view all the answers

Where must the train come to a stop to take the Calling On signal 'OFF'?

Calling on zone Signup and view all the answers

How long will it take for the Calling On signal to come to the 'OFF' position?

30 seconds Signup and view all the answers

What is the purpose of the Calling On signal?

To allow a train to enter an obstructed line Signup and view all the answers

What is the indication of the Distant signal in Caution Aspect?

Proceed and be prepared to pass the next stop signal at a restrictive speed Signup and view all the answers

In which aspect does the Distant signal indicate 'stop dead'?

Stop Aspect Signup and view all the answers

What should a driver do when encountering a Distant signal showing 'proceed and be prepared to pass the next stop signal at a restrictive speed'?

Proceed cautiously Signup and view all the answers

Which aspect requires the train to proceed and be prepared to stop at the next stop signal?

Caution Aspect Signup and view all the answers

What does the Distant signal instruct when showing 'proceed'?

Proceed with care Signup and view all the answers

When a signal shows white light instead of a colored light, it is treated as:

The most restrictive aspect Signup and view all the answers

If a color light signal is flickering/bobbing and does not show a steady aspect for at least how many seconds, it should be treated as defective?

60 seconds Signup and view all the answers

When the IBS (Intermediate Block Signaling) is defective, which authority is given to the loco pilot at the station?

T.369 (3[B]) Signup and view all the answers

When the IBS is active, what should the loco pilot do immediately?

Stop the train and communicate with the station master Signup and view all the answers

Which of the following is NOT a reason to treat a signal as defective?

The signal is showing a steady green light Signup and view all the answers

What does the term 'bobbing' refer to in the context of a signal?

The signal light is moving up and down Signup and view all the answers

What is the maximum permissible speed for a goods train while entering the terminal yard?

10 kmph Signup and view all the answers

How should the Loco Pilot of a departing train be advised after putting back the starter/advanced starter signal?

T.369 (3b) Signup and view all the answers

In which emergency situation can an 'off' signal be put back to 'on' position for a train?

Any emergency situation Signup and view all the answers

What is the purpose of issuing T.369 (3b) to the Loco Pilot of a departing train?

To authorize the train to proceed Signup and view all the answers

Which of the following is NOT a method mentioned in the text for advising the Loco Pilot of a departing train?

Verbal instructions Signup and view all the answers

What is the maximum speed limit for goods trains mentioned in the text?

10 kmph Signup and view all the answers

Study Notes

Signals and Their Purpose

A distant signal serves as an advance warning to drivers of an approaching signal that may require them to stop.
A facing point signal is a signal that faces the direction of train movement, while a trailing point signal faces away from the direction of train movement.
A calling-on signal is used to permit a train to proceed into a section of track where another train is already present.
A shunt signal is used to regulate shunting movements within a yard or terminal area.

Calling-On Signal

When taken 'off', the calling-on signal displays a white light, indicating that the train can proceed.
The calling-on signal can be used on occasions such as when a train is instructed to enter a section of track occupied by another train.
A train must come to a complete stop before taking the calling-on signal 'off'.
It takes approximately 2 minutes for the calling-on signal to come to the 'off' position.

Distant Signal

The indication of the distant signal in the caution aspect is a yellow light, warning drivers to prepare to stop.
In the 'stop dead' aspect, the distant signal displays a red light, requiring drivers to stop immediately.
When encountering a distant signal showing 'proceed and be prepared to pass the next stop signal at a restrictive speed', drivers should proceed cautiously, prepared to stop at the next signal.

Signal Defectiveness

If a signal shows a white light instead of a colored light, it is treated as defective.
If a color light signal is flickering or bobbing and does not show a steady aspect for at least 3 seconds, it should be treated as defective.

IBS and Defectiveness

When the IBS (Intermediate Block Signaling) is defective, authority is given to the loco pilot at the station to proceed with caution.
When the IBS is active, the loco pilot should immediately acknowledge the signal and proceed with caution.

Speed Limits and Emergency Situations

The maximum permissible speed for a goods train while entering the terminal yard is 15 km/h.
In an emergency situation, an 'off' signal can be put back to the 'on' position for a train.
The purpose of issuing T.369 (3b) to the loco pilot of a departing train is to advise them of the speed limit and any other necessary instructions.

Loco Pilot Advisory

The loco pilot of a departing train should be advised after putting back the starter/advanced starter signal through a written or verbal warning.
A method of advising the loco pilot of a departing train is through a written warning.

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Test your knowledge on railway signals, including distant signals and various kinds of signals in use. Learn about the working of IB signal and how to manage trains when it is defective.

Railway Signals and IB Signals Quiz

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