Railway Signal Medium
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Railway Signal Medium

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Questions and Answers

What does a Warner Signal at 'ON' indicate?

  • Approach next signal cautiously (correct)
  • Stop immediately
  • Continue without restrictions
  • Proceed at normal speed

    • The OFF aspect of a Warner signal indicates caution.

    False

    A 4-Aspect Colour Light Stop Signal at 'OFF' indicates the driver to stop the train.

    False

    A UQMA signal and a MACL signal have the same aspect and indication.

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

    What does a yellow aspect indicate?

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

    What is indicated when a distant signal in single distant territory displays a proceed aspect?

    <p>Train is going to be received on Main line</p> Signup and view all the answers

    A minimum of one stop Signal and a __________ Signal is necessary to provide the requisite space interval between the trains.

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

    What does a Warner signal at OFF indicate?

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

    Match the following signals with their indications:

    <p>Warner Signal = Proceed cautiously Distant Signal = Expect the next stop signal to be OFF 4-Aspect Colour Light Stop Signal at OFF = Proceed Yellow aspect = Prepare to stop at the next stop signal</p> Signup and view all the answers

    What is the purpose of the attention aspect in a 4-Aspect Stop Signal?

    <p>To prepare for restricted speed on the next signal</p> Signup and view all the answers

    A __________ marker shall be provided below UQ distant signal.

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

    All signals at a station must be located at the departure end only.

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

    A Warner signal and a distant signal perform the same function.

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

    What is the possible maximum number of aspects in LQ signal?

    <p>All of the above</p> Signup and view all the answers

    What must a driver expect when a distant signal is at Green (OFF)?

    <p>Next stop signal may be OFF</p> Signup and view all the answers

    The driver must approach a signal with a yellow aspect at a __________ speed.

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

    A Warner signal on an independent post at ON provides information regarding signals in advance.

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

    Match the following signals with their indications:

    <p>UQ distant = Cannot combine with stop signal Warner signal = Permissive signal P marker = Provided below UQ distant signal Attention = Indication of caution</p> Signup and view all the answers

    How many total aspects are in a distant signal in double distant signal territory?

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

    What does a green aspect display on a distant signal indicate?

    <p>Run through condition</p> Signup and view all the answers

    The normal aspect of a distant signal in double distance territory is caution.

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

    If a distant signal in single distant territory displays a proceed aspect, then it indicates _____

    <p>Train is going to be received on Main line</p> Signup and view all the answers

    If a distant signal in double distant territory displays a proceed aspect, then it indicates _____

    <p>Train is going to be received on Main line</p> Signup and view all the answers

    Who should be able to see the aspects of signals clearly?

    <p>The driver of the approaching train</p> Signup and view all the answers

    What should not be compromised in signal location?

    <p>Sighting distances</p> Signup and view all the answers

    Signals should normally be located on the right-hand side of the line they apply to.

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

    Match the following signal aspects with their meanings:

    <p>Proceed = Train is cleared to enter the line Caution = Prepare to stop or slow down Stop = Immediate halt required Run through = Train may continue without stopping</p> Signup and view all the answers

    What is a critical design aspect of signals concerning potential failure?

    <p>Failure should assume the most restrictive aspect.</p> Signup and view all the answers

    Which of the following is NOT a consideration in signal location?

    <p>Cost of materials</p> Signup and view all the answers

    Where must the Routing Signal be placed?

    <p>In rear of the point it protects</p> Signup and view all the answers

    The Starter Signal must be placed at least 400 meters in advance of the Home Signal.

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

    What is the minimum distance for an Advanced Starter from the outermost point on a single line?

    <p>180 metres</p> Signup and view all the answers

    The Intermediate Starter shall be placed in rear of the point or __________ to which it protects.

    <p>fouling mark</p> Signup and view all the answers

    Match the following types of signals with their descriptions:

    <p>Routing Signal = Protects a point Starter Signal = Placed 400 meters in advance of the Home Signal Intermediate Starter = Placed in rear of point or fouling mark Advanced Starter = Placed outside all connections</p> Signup and view all the answers

    If only one Starter is used for two or more converging lines, where should it be placed?

    <p>Outside the connections on the line it applies to</p> Signup and view all the answers

    What is the minimum height for a Warner signal when placed alone on a post?

    <p>1.5 to 2 metres</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 is the minimum distance a Warner signal can be placed from the first stop signal?

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

    The Home Signal must be located in rear of all connections, and close to the first set of facing points clear of the __________.

    <p>lock bar</p> Signup and view all the answers

    Match the following signals with their characteristics:

    <p>Warner Signal = 1.5 to 2 metres above the signal post Outer Signal = First stop signal of the station Home Signal = Located behind facing points Fixed Signal = Must not be capable of being taken 'OFF'</p> Signup and view all the answers

    What is the required minimum distance between the Outer Signal and Home Signal on a single line?

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

    Fixed Warner Signals may be adjusted to 'OFF' position for any line.

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

    What must be done if the distance between the Home Signal and the first facing point exceeds 180 metres?

    <p>Other arrangements for route holding must be made.</p> Signup and view all the answers

    An un-worked Warner Signal must be fixed at the __________ position.

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

    Where must the Home Signal be located?

    <p>In rear of all connections</p> Signup and view all the answers

    Study Notes

    Signal Aspects and Indications

    • Warner Signal at Green (OFF) allows the driver to proceed at normal speed.
    • Warner Signal at ON requires cautious approach to the next signal, preparing to stop.
    • Multiple aspect signalling does not guarantee specific information at station approaches.
    • Distant Signal at Green (OFF) informs the driver to expect the next stop signal to be OFF; subsequent stop signals may vary.
    • 4-Aspect Colour Light Stop Signal at OFF (green light) permits the driver to proceed, indicating the next stop signal is also OFF.
    • Yellow aspect signals caution; the driver must proceed with caution and prepare to stop at the next signal.
    • Attention aspect is displayed by two yellow lights vertically, indicating to proceed but be ready for restricted speed due to upcoming conditions.

    Signal Location and Requirements

    • At least one stop signal and one permissive signal are necessary for safe train separation.
    • Stop signals are strategically located at various points, such as approach and departure ends of stations and junctions.
    • Naming of stop signals is essential to avoid confusion while identifying their locations and functions.

    Location of Signals

    • Signals must be positioned for optimal visibility and prevent misinterpretation of signals.
    • Typically placed on the left-hand side of the tracks; alignment should avoid overlap with other light signals.
    • Signals should have adequate sighting distances and operational efficiency, ensuring compliance with regulations.
    • Warner Signals can be positioned on their own post or below the main stop signal, maintaining strict operational limitations.

    Signal Types and Placement

    • Warner Signal placement requirements include:
      • 1200 meters behind the first stop signal.
      • Positioned appropriately concerning other signals to ensure visual clarity.
    • Outer Signal serves as the first stop signal, located at least 400 meters from potential line obstructions.
    • Home Signal must be placed to provide adequate protection for adjacent lines, close to the first set of facing points.
    • Routing Signal should be positioned in rear of the point it protects.
    • Starter Signal should be at least 400 meters ahead of the Home Signal, with specific placements for converging lines.
    • Intermediate Starter and Advance Starter placement is crucial, with specifications concerning their distances from connection points.

    Review Questions

    • Differences between Warner signal and Distant signal focus on their operational purposes and indications.
    • Advantages of Colour Light Signals over Semaphore signals include clarity, visibility, and lower maintenance.
    • True/False statements require understanding of signal functions, indicating potential common misconceptions.
    • Fill-in-the-blank exercises emphasize knowledge of signaling territory and aspects relevant to signal operation.

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    Description

    Test your knowledge of railway signal indications and their implications for train operations. This quiz covers the meanings of Warner signals and distant signals, focusing on how they influence a driver's actions. Ideal for railway enthusiasts or professionals seeking to reinforce their understanding of signalling systems.

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