Railway Signalling Hard
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Questions and Answers

What is the main purpose of an Automatic Warning System?

  • To centralize the management of train operations
  • To control the maximum speed of trains
  • To alert passengers about train schedules
  • To aid the driver in signal awareness and prevent accidents (correct)

    • Centralised Traffic Control increases line capacity by decentralizing operations.

    False

    What corrective action is taken if a train's actual speed is different from the permitted speed?

    Automatic brake application.

    The __________ describes the designation and number of trains to the central control office.

    <p>Train Describer</p> Signup and view all the answers

    Which of the following best defines 'adequate distance'?

    <p>The distance sufficient to ensure safety</p> Signup and view all the answers

    An Authorized Officer is empowered by the Railway Administration to issue instructions.

    <p>True</p> Signup and view all the answers

    What is the role of approach lighting in railway signalling?

    <p>It automatically controls the lighting of signals based on the approach of a train.</p> Signup and view all the answers

    The __________ of instruction must be approved by the Commissioner of Railway Safety.

    <p>Approved Special Instructions</p> Signup and view all the answers

    Match the railway terms with their definitions:

    <p>ACT = Indian Railways Act, 1989 Authorized Officer = Person empowered to issue instructions Adequate Distance = Distance sufficient to ensure safety Approach Lighting = Lighting controlled by train approach</p> Signup and view all the answers

    What does 'Authority to Proceed' mean?

    <p>Authority for the Driver to enter a block section</p> Signup and view all the answers

    An Axle Counter is used to count the number of passengers boarding a train.

    <p>False</p> Signup and view all the answers

    What is meant by a 'Block Section'?

    <p>That portion of the running line between two block stations where no running train may enter until Line Clear has been received.</p> Signup and view all the answers

    The ______ is responsible for regulating the traffic on a section of a railway.

    <p>Controller</p> Signup and view all the answers

    Match the following terms related to railway operations:

    <p>Authority to Proceed = Enter the block section Block Back = Message about obstruction to rearmost station Centralised Traffic Control = Remotely controlled fixed signals Competent Railway Servant = Duly qualified railway servant</p> Signup and view all the answers

    Who is referred to as a 'Driver'?

    <p>The engine driver or competent railway servant in charge of driving a train</p> Signup and view all the answers

    The term 'Day' refers to the time between sunset to sunrise.

    <p>False</p> Signup and view all the answers

    What is the minimum distance a Warner signal is located from the first stop signal?

    <p>1200 metres</p> Signup and view all the answers

    What is the function of a 'Commissioner of Railway Safety'?

    <p>To exercise functions under the Act regarding railway safety.</p> Signup and view all the answers

    The Warner signal can be taken 'OFF' while the stop signal above it is 'ON'.

    <p>False</p> Signup and view all the answers

    What must happen before a Warner signal can be taken 'OFF'?

    <p>Levers of all the relevant signals must be pulled.</p> Signup and view all the answers

    Connections refer to the ______ and crossings or other appliances used in a running line.

    <p>points</p> Signup and view all the answers

    Match the definitions with their corresponding terms:

    <p>Block Forward = Obstructed section in advance Axle Counter = Counts axles to ensure track is clear Competent Railway Servant = Qualified to perform railway duties Day = From sunrise to sunset</p> Signup and view all the answers

    The outer signal shall be placed not less than ____ metres in rear of the point to which the line may be obstructed.

    <p>400</p> Signup and view all the answers

    Match the following signals with their characteristics:

    <p>Warner Signal = Must not be capable of being taken 'OFF' while stop signal is 'ON' Outer Signal = First stop signal of the station Home Signal = Located in rear of all connections Un-worked Warner Signal = Fixed at 'ON' position</p> Signup and view all the answers

    How far must there be between the Outer and Home signals on a single line?

    <p>580 metres</p> Signup and view all the answers

    Proceeding at a restricted speed is necessary when passing the next stop signal.

    <p>True</p> Signup and view all the answers

    The OFF aspect of a Warner signal indicates that attention is required.

    <p>True</p> Signup and view all the answers

    The names and indications of the UQMA signal and the MACL signal are the same.

    <p>False</p> Signup and view all the answers

    A UQ distant signal can combine with a stop signal.

    <p>False</p> Signup and view all the answers

    If the distant signal in single distant territory displays a proceed aspect, then it indicates ______________________.

    <p>all a, b &amp; c</p> Signup and view all the answers

    What does a Warner signal with the 'ON' indication provide information about?

    <p>Aspect of signal in advance</p> Signup and view all the answers

    What is the maximum possible number of aspects in an LQ signal with combination of signals?

    <p>all a, b &amp; c</p> Signup and view all the answers

    A Warner signal (semaphore) is considered a permissive signal and comes with a 'P' marker.

    <p>True</p> Signup and view all the answers

    Match the following types of signals with their indications:

    <p>Warner signal = Attention UQ distant signal = Proceed Stop signal = Halt MACL signal = Caution</p> Signup and view all the answers

    A 'P' marker shall be provided below the ____________________ signal.

    <p>UQ distant</p> Signup and view all the answers

    What does the night aspect of a Warner Signal indicate when it is 'ON'?

    <p>Green Light above a Red Light</p> Signup and view all the answers

    A Warner Signal below a Stop Signal can provide pre-warning to the driver of an approaching train.

    <p>False</p> Signup and view all the answers

    What happens if the Red Light of a Warner Signal extinguishes while the Green Light is still 'ON'?

    <p>The driver may mistake the signal for a stop signal in the 'OFF' position and proceed.</p> Signup and view all the answers

    The Warner Signal's arrangement below a Stop Signal shows two ______ lights.

    <p>Red</p> Signup and view all the answers

    Match the following scenarios with their outcomes regarding Warner Signals:

    <p>Fixed Green Light extinguished = Displays only a Red light Red Light extinguished = Displays only a Green light Both lights extinguished = A risk of misinterpretation occurs Warner Signal below Stop Signal = No pre-warning available</p> Signup and view all the answers

    Which description is accurate when a Warner Signal is placed on a post by itself?

    <p>Provides pre-warning to the driver</p> Signup and view all the answers

    When the Stop Signal above the Warner is lowered, the driver is only governed by the Warner signal.

    <p>False</p> Signup and view all the answers

    What major advantage does a Warner Signal on a post have over one below a Stop Signal?

    <p>It allows for pre-warning of an approaching train.</p> Signup and view all the answers

    The Warner Signal displays a ______ signal when both fixed lights are extinguished.

    <p>Red</p> Signup and view all the answers

    What visual indication does a Fish-tailed semaphore arm provide compared to a square-ended arm?

    <p>A signal misinterpretation risk</p> Signup and view all the answers

    If the Stop Signal is in 'ON' position, the Warner Light can also indicate proceed.

    <p>False</p> Signup and view all the answers

    Study Notes

    Automatic Warning System

    • Designed to assist drivers by indicating signal conditions and prevent accidents.
    • Automatically applies brakes if a driver ignores a stop signal.
    • Continuously monitors train speed against permitted limits, enforcing corrective actions if speeds differ.

    Centralised Traffic Control and Remote Control

    • Enhances economic efficiency by centralizing the control of signals and points across extensive rail stretches.
    • Utilizes coded techniques for remote control of stations, improving overall line capacity.

    Train Describer

    • Displays train designations and positions to central control offices.
    • Ensures controllers are informed of each train's status over monitored sections.
    • Commonly integrated with centralized traffic control and remote control systems.

    Definitions in Railway Signalling

    • ACT: Refers to the Indian Railways Act, 1989.
    • Adequate Distance: Defined as the distance necessary for safety measures.
    • Approach Lighting: Automatically controlled lighting for signals upon train approach.
    • Approved Special Instructions: Specific directives approved by the Commissioner of Railway Safety.
    • Axle Counter: An electrical device for counting axles in and out to verify if a track section is clear.

    Signal and Aspect Definitions

    • Block Section: Area between two block stations; trains enter only after receiving a "Line Clear".
    • Centralised Traffic Control: Governs train operations using fixed signals from a dedicated control location.

    Warner Signal Details

    • Night aspect indicators: green light appears above a red light; critical for driver perception.
    • Different configurations exist when a Warner Signal is placed below a stop signal.
    • No pre-warning is available with a Warner signal positioned under a stop signal.

    Signal Arrangement and Location

    • Warner Signal Placement: Can be placed independently or below stop signals, must be located a minimum of 1200 meters behind the first stop signal.
    • Outer Signal: Functions as the first stop signal; must be positioned 400 meters in rear of potential block points.
    • Home Signal: Placed near connections and facing points, necessary for protecting adjacent lines, with rules for distance and safety measures related to facing points.

    Multiple Choice Facts

    • Distant signals in single territories indicate proceed aspects relate to various operational conditions.
    • Maximum aspects of LQ signals and distant signals in double distant signal territories are defined by safety regulations and operational guidelines.

    General Signal Operations

    • Signals for train movement control are critical for safe operations, requiring precise identification and regulation at stations.
    • Proper signal function and positioning are essential for maintaining safe train operations across the railway network.

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    Description

    This quiz explores key aspects of railway signalling systems, including automatic warning systems, centralized traffic control, and train describer functions. It provides insights into safety measures and definitions crucial for railway operations.

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