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Questions and Answers
What is required before trains can proceed in the wrong direction on an obstructed line?
What is required before trains can proceed in the wrong direction on an obstructed line?
What speed should the first train run at during temporary single line working?
What speed should the first train run at during temporary single line working?
Which of the following persons must be advised in case of obstruction on a section?
Which of the following persons must be advised in case of obstruction on a section?
What actions should be taken to points at the station and Block Hut during an obstruction?
What actions should be taken to points at the station and Block Hut during an obstruction?
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What is the procedure if the Block Instruments fail?
What is the procedure if the Block Instruments fail?
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Who is responsible for the custody of the keys of points connecting with a running line at stations without locking?
Who is responsible for the custody of the keys of points connecting with a running line at stations without locking?
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What condition must be satisfied before line clear can be given?
What condition must be satisfied before line clear can be given?
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What should happen when line clear has already been given but the block section in advance is obstructed?
What should happen when line clear has already been given but the block section in advance is obstructed?
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What must be done if a station cannot accept a train after receiving the 'Is Line Clear' signal?
What must be done if a station cannot accept a train after receiving the 'Is Line Clear' signal?
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Which signal must be kept at danger when 'Line Clear' has been given but the block section is obstructed?
Which signal must be kept at danger when 'Line Clear' has been given but the block section is obstructed?
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When can signals be taken off instead of remaining at danger upon the approach of a train?
When can signals be taken off instead of remaining at danger upon the approach of a train?
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What is required for all points before accepting an incoming train on a line?
What is required for all points before accepting an incoming train on a line?
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Under what condition can the Block Instrument Commutator be released using the Release Plungers?
Under what condition can the Block Instrument Commutator be released using the Release Plungers?
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What happens if the Treadle fails to operate during a train's passage?
What happens if the Treadle fails to operate during a train's passage?
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What is the purpose of pressing the button marked 'Bell' when using the Release Plungers?
What is the purpose of pressing the button marked 'Bell' when using the Release Plungers?
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What must the Station Master confirm before pressing the Release Plunger?
What must the Station Master confirm before pressing the Release Plunger?
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How long should the corresponding Release Plunger be held down?
How long should the corresponding Release Plunger be held down?
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What indication signifies the failure of the Treadle operation?
What indication signifies the failure of the Treadle operation?
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What record must the Station Master maintain regarding the Release Plungers?
What record must the Station Master maintain regarding the Release Plungers?
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What action must be taken by the operator at the same time as pressing the 'Release' button?
What action must be taken by the operator at the same time as pressing the 'Release' button?
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What are the two types of bells in the Signal cabin used for?
What are the two types of bells in the Signal cabin used for?
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What information must be recorded in the special book regarding the operation of the Release Plunger?
What information must be recorded in the special book regarding the operation of the Release Plunger?
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What should the person operating the Block Instruments in the cabin include in the Train Signal Register remarks column?
What should the person operating the Block Instruments in the cabin include in the Train Signal Register remarks column?
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What action should the Station Master take upon finding a failure in the Treadle/Track circuit?
What action should the Station Master take upon finding a failure in the Treadle/Track circuit?
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If a Release Plunger is not provided at a station, what should the Station Master communicate to the station in rear?
If a Release Plunger is not provided at a station, what should the Station Master communicate to the station in rear?
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Which document is issued to the Loco Pilot when the Treadle/Track circuit fails and a Stop Signal is in the 'On' position?
Which document is issued to the Loco Pilot when the Treadle/Track circuit fails and a Stop Signal is in the 'On' position?
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What additional information is required in the remarks column after operating the Release Plunger?
What additional information is required in the remarks column after operating the Release Plunger?
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Which aspect of the operation must be inspected by Transportation Inspectors?
Which aspect of the operation must be inspected by Transportation Inspectors?
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Which of the following is NOT a required entry in the record after the operation of the Release Plunger?
Which of the following is NOT a required entry in the record after the operation of the Release Plunger?
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When the Treadle/Track circuit fails, what must the Station Master in rear obtain to clear the next train?
When the Treadle/Track circuit fails, what must the Station Master in rear obtain to clear the next train?
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What type of remarks should the record include regarding the failure of the Treadle/Track circuit?
What type of remarks should the record include regarding the failure of the Treadle/Track circuit?
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What must the 'C' class station do after acknowledging the blocking for shunting purposes?
What must the 'C' class station do after acknowledging the blocking for shunting purposes?
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How should the 'C' class station respond after receiving confirmation that shunting has been completed?
How should the 'C' class station respond after receiving confirmation that shunting has been completed?
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What is the status of the last Stop signal lever when the system is in normal operation?
What is the status of the last Stop signal lever when the system is in normal operation?
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What must occur before the Block Instrument can be set back to 'On' after it has been taken 'Off'?
What must occur before the Block Instrument can be set back to 'On' after it has been taken 'Off'?
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What should be done immediately after any signals or messages are sent related to blocking sections?
What should be done immediately after any signals or messages are sent related to blocking sections?
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When can the last Stop signal be taken 'Off' again after it has been put back to 'On'?
When can the last Stop signal be taken 'Off' again after it has been put back to 'On'?
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What must happen to the Block Instrument after shunting has been completed?
What must happen to the Block Instrument after shunting has been completed?
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What does the locking mechanism on the last Stop signal lever control?
What does the locking mechanism on the last Stop signal lever control?
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After turning the Block Instrument to 'On', what action must not be taken for the same 'Line Clear'?
After turning the Block Instrument to 'On', what action must not be taken for the same 'Line Clear'?
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What should be done when the Block Instrument is set to 'Train On Line'?
What should be done when the Block Instrument is set to 'Train On Line'?
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What should be done if a signal is not acknowledged immediately after transmission?
What should be done if a signal is not acknowledged immediately after transmission?
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Which signal code indicates that there is an obstruction that requires examining the train?
Which signal code indicates that there is an obstruction that requires examining the train?
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What is an essential prerequisite before sending any other signal?
What is an essential prerequisite before sending any other signal?
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What is the correct code for acknowledging a received signal?
What is the correct code for acknowledging a received signal?
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How many beats are signaled for a 'Train Entering Section'?
How many beats are signaled for a 'Train Entering Section'?
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What does the six beats signal with a pause indicate?
What does the six beats signal with a pause indicate?
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Which of the following descriptions applies to the 'Cancel Last Signal' code?
Which of the following descriptions applies to the 'Cancel Last Signal' code?
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What must the Station Master do when a train is overdue and there is no response from the Station Master in advance?
What must the Station Master do when a train is overdue and there is no response from the Station Master in advance?
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Under what condition can the 'Train out of Section' signal be sent?
Under what condition can the 'Train out of Section' signal be sent?
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What is the procedure if it becomes necessary to obstruct a line outside the Home signal while the Block section in rear is clear?
What is the procedure if it becomes necessary to obstruct a line outside the Home signal while the Block section in rear is clear?
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What does the Station Master of the station performing shunting need to advise to the next station in rear?
What does the Station Master of the station performing shunting need to advise to the next station in rear?
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Which of the following actions should be confirmed before the Block Instrument can be reset to 'On'?
Which of the following actions should be confirmed before the Block Instrument can be reset to 'On'?
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What should the Station Master do if he believes a train is incomplete after sending a signal?
What should the Station Master do if he believes a train is incomplete after sending a signal?
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What action must the Station Master take after a train passes without a Tail-lamp?
What action must the Station Master take after a train passes without a Tail-lamp?
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When should the Station Master signal 'Obstruction Danger'?
When should the Station Master signal 'Obstruction Danger'?
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What must the Station Master do after sending an 'Obstruction Danger' signal?
What must the Station Master do after sending an 'Obstruction Danger' signal?
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What does the Caution Order provided to Loco Pilots after an obstruction notify them of?
What does the Caution Order provided to Loco Pilots after an obstruction notify them of?
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What is the primary purpose of signaling 'Train Out of Section'?
What is the primary purpose of signaling 'Train Out of Section'?
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What condition must be met for the 'Train Out of Section' signal to be sent forward?
What condition must be met for the 'Train Out of Section' signal to be sent forward?
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What is the Station Master's responsibility after confirming that a train is complete?
What is the Station Master's responsibility after confirming that a train is complete?
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If a dangerous condition is detected, what should the Station Master prioritize?
If a dangerous condition is detected, what should the Station Master prioritize?
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What specific details must be recorded in the book designated for the operation of the Release Plunger?
What specific details must be recorded in the book designated for the operation of the Release Plunger?
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Which of the following must the Station Master communicate upon finding that the Treadle/Track circuit has failed?
Which of the following must the Station Master communicate upon finding that the Treadle/Track circuit has failed?
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What information should be included in the Remarks Column of the Train Signal Register after operating the Release Plunger?
What information should be included in the Remarks Column of the Train Signal Register after operating the Release Plunger?
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What document serves as authority for the Loco Pilot to pass the Stop Signal when the Treadle/Track circuit fails?
What document serves as authority for the Loco Pilot to pass the Stop Signal when the Treadle/Track circuit fails?
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What must take place before the Station Master can issue Form T/369-3b to the Loco Pilot?
What must take place before the Station Master can issue Form T/369-3b to the Loco Pilot?
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What is required in the record regarding the operation of the Release Plunger besides the train number?
What is required in the record regarding the operation of the Release Plunger besides the train number?
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When Treadles/Track circuit failures occur and no Release Plunger is available, what should the Station Master provide to reinforce communication?
When Treadles/Track circuit failures occur and no Release Plunger is available, what should the Station Master provide to reinforce communication?
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What aspect of the Treadle/Track circuit failure record must be confirmed by Transportation Inspectors?
What aspect of the Treadle/Track circuit failure record must be confirmed by Transportation Inspectors?
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What additional detail is necessary in the Remarks Column after the Release Plunger is operated?
What additional detail is necessary in the Remarks Column after the Release Plunger is operated?
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What action is required from the Station Master if the Treadle/Track circuit fails and there is no Release Plunger present?
What action is required from the Station Master if the Treadle/Track circuit fails and there is no Release Plunger present?
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What indication is needed to confirm that the last vehicle of a train is present before it can proceed?
What indication is needed to confirm that the last vehicle of a train is present before it can proceed?
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Which signal is used to indicate that a train is divided while running through a station?
Which signal is used to indicate that a train is divided while running through a station?
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What action should immediately follow the confirmation of a 'Vehicles running away on wrong line' signal?
What action should immediately follow the confirmation of a 'Vehicles running away on wrong line' signal?
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What must be done if a train is found to be incomplete?
What must be done if a train is found to be incomplete?
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When a 'Train Divided' signal is received, what action should the receiving Station Master take?
When a 'Train Divided' signal is received, what action should the receiving Station Master take?
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What should be done by the Station Master if a train becomes divided when starting from a Block station?
What should be done by the Station Master if a train becomes divided when starting from a Block station?
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What is the first action a Station Master must take when sending the 'Vehicles running away on wrong line' signal?
What is the first action a Station Master must take when sending the 'Vehicles running away on wrong line' signal?
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What signal is withheld when the 'Train out of Section' signal is not properly established?
What signal is withheld when the 'Train out of Section' signal is not properly established?
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What should the Station Master do upon receiving a 'Train out of Section' signal?
What should the Station Master do upon receiving a 'Train out of Section' signal?
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If a train is seen proceeding on a wrong line, how is this situation indicated?
If a train is seen proceeding on a wrong line, how is this situation indicated?
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Study Notes
Chapter III - Double Line Working
-
Code of Bell Signals: Used for Double Line Block Working, each signal given slowly and distinctly.
- Call Attention: One stroke or beat.
- Line Clear or Enquiry: Two strokes or beats.
- Train Entering Section: Three strokes.
- Train out of Section / Obstruction Removed: Four strokes.
- Cancel Last Signal / Signal in Error: Five strokes.
- Obstruction Danger / Stop and Examine Train / Train Passed without Tail Lamp / Vehicles away on Block Section / Vehicles away on Right Line: Six strokes; various pauses indicate specifics.
- Testing Signal: Sixteen strokes.
Acknowledgement of Signals
- Each received signal must be acknowledged.
- No signal should be acknowledged until fully understood.
- Signals must be repeated at 20-second intervals if not acknowledged, up to 5 times.
- If no response, alternative communication methods should be utilized.
Method of Using Bell Codes
-
Call Attention: Signal before other signals.
- Not required prior to "Train entering section" signal.
-
Obstruction Danger: Six beats on double line.
- Station Master action as per rules.
- Station Master acknowledges with 6 beats if stops train.
-
Line Clear / Line Clear Enquiry: Permission request signal.
- Must be used after "Train Out of Section" signal received and "Line Closed" displayed.
- Refusal of Line Clear follows specific method.
- Must communicate refusal via block telephone.
- Train Entering Section: Sent to station in advance when train passes the Last Stop.
Train Entering Section
- Signal sent to block station in advance.
Train Out of Section Signal
- Sent when train is complete and conditions for line clear are met as per GR 8.02, 8.03, 8.04.
Cancel Last Signal / Signal in Error
- Given with 5 beats, in cases of error to cancel previous signal.
- Private numbers exchanged.
- Circumstances behind cancellation recorded.
Obstruction Danger
- Signal when blocking Line Clear is necessary.
- Stops incoming trains.
- Follows specified procedure which includes operating Block Instrument to appropriate position and using other means.
- If unsuccessful notify station ahead.
Stop and Examine Train
- Used when irregularities are noted on a passing train or some other unusual occurrence happens
- Include details of the situation, such as;
- Signals of alarm by a passenger.
- Goods falling off from an open wagon.
- Vehicle on fire.
Train Passed Without Tail Lamp or Tail Board
- Signal sent when a train is without a tail lamp/board.
- Sent to station ahead.
- Station in rear does not send "Train Out of Section" signal until advice from ahead confirms train is complete.
Vehicles Away on Block Section
- Signal sent when vehicles leave the block section.
Vehicles Away on Right Line
- Sent when vehicle leaves the right line.
Testing Signal
- Used by block maintenance staff to verify instrument functionality.
- Must be promptly repeated by Station Masters.
Failure of Electrical Block and Speaking Instruments
- If block instruments fail, signals sent via telephone and Private Numbers.
- If direct telephone fails, use Control phone to transmit information
Rules and Regulations for Working of Trains during Total Interruption of Communications
- If communication fails between stations, prioritize using various communication tools (listed in order) such as Block Instruments, Track Circuits, Auto phones etc.
- Specific instructions for using VHF communication stated.
- Only permitted for freight trains in specific circumstances.
Procedure for Train Passing
- Before any train is allowed into a block section, it must be brought to a stop, and the loco pilot/guard must be advised of line-clear conditions from duty Station Master.
- If no reply after five attempts from station ahead, use alternative means of communication.
Train Entering/Exiting Section/Obstruction/Cancellation
- Sending/Receiving/Canceling/Refusal procedures require explicit steps, and details of circumstances need documentation
Conditions Under Which Line Clear Can Be Given
- For certain class of stations, "Line Clear" cannot be given without fulfilling explicit criteria (arrival of previous train, position of signals).
Obstruction When Train Is Approaching
- Procedure in place for obstruction outside home signal when block section is clear.
Refusing Line Clear
- Procedure for refusing line clear request (6 beats).
- Procedure for giving line clear
Train Entering Section
- Signal to be sent when train/portion passes the last stop signal.
Train On Line
- Indication on instrument when train is in block section
- Acknowledgement of "Train Entering Section" signal.
Train Out of Section
- Indication when train has passed block section and all signals are restored.
Obstruction in Rear of Starter
- Procedure if a train obstructs the line outside the Home signal.
- Methods for blocking section back or forward.
Obstruction Beyond the Last Stop Signal
Blocking Forward/Backward
- Procedures for blocking forward and backward operations.
- Involves telephone communication with station ahead.
Last Stop Signal
- Detailed instructions for operation of last stop signals and block instruments.
Failure of Treadles / Track Circuit
- Procedures if treadles or track circuits fail.
Single Line Working on Double Line
- Temporary procedures for use if one line is unavailable.
Failure of Electrical Speaking Instruments
- Procedures for if Block Instruments fail (telephone communication etc).
- If communication with controller also fails, trains must follow the Chapter VII of this Manual.
Persons to Be Advised
- Controller.
- Controlling Station Master.
Regulating Traffic
Warning Labour Gang
- Instructions to issue warnings for labour gangs.
Line Clear Forms
Miscellaneous
- Various forms used for documentation
Failure of Electrical Speaking Instruments
- Instructions for if there is a Block Instrument failure.
Reporting of Failures
Obstruction of Block Section
- Rules for when there's an obstruction.
Thick Fog or Tempestuous Weather
- Conditions under which a train can't be operated owing to fog and weather.
Train Signal Register
- Specifications of information recorded.
Station Masters Changing Duty
- Specific instructions when a Station Master changes duty.
Custody of Keys of Points
- Custody and handling of keys of points at stations.
"A" Class Stations
- Specific conditions for giving Line Clear at "A" Class stations.
"B" Class Stations
- Specific conditions for giving Line Clear at "B" Class stations.
"C" Class Stations
- Specific conditions for giving Line Clear at "C" Class stations.
Blocking Back and Blocking Forward
- Procedures for blocking forward and backward operations at specific classes of station.
Methods of Obtaining Line Clear
- Steps involved in obtaining line clear for a train to proceed.
Train Out of Section Signals / Obstruction Removed Signals
- Signal when section clears after train passes / when obstruction removed.
Obstruction Outside Home Signal
- Procedure if obstruction is detected outside the Home signal.
Miscellaneous
- Various rules and forms are stated.
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Description
Test your knowledge on railway operations, focusing on procedures related to obstructions, signal management, and safety protocols. This quiz covers important protocols for train movement during temporary single line working and the responsibilities of personnel during such situations.