Railway Safety Terminology Quiz
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Questions and Answers

What is the purpose of an Interlocking Appliance?

  • To secure tracks for maintenance work
  • To control movements over designated routes (correct)
  • To transmit unique random numbers to RWICs
  • To indicate the limit of a block under MBS rules
  • When is an interlocking appliance considered blocked?

  • When a qualified employee secures it
  • When a BDR code is transmitted
  • When a fixed signal is displayed
  • When an approved device prevents its operation (correct)
  • What defines the Interlocking Limits?

  • The number of movable apparatus within an interlocking
  • The unique random numbers transmitted
  • The tracks between the extreme opposing signals (correct)
  • The speed displayed on a CAB signal
  • What does a Controlled Signal do?

    <p>Displays a Stop indication under RTC control</p> Signup and view all the answers

    How is an interlocking appliance considered secured?

    <p>By mechanically locking it in the required position</p> Signup and view all the answers

    What does a Signals Block Limit Signal indicate?

    <p>The limit of a block under MBS rules</p> Signup and view all the answers

    Study Notes

    Blocking Device Removed (BDR) Code

    • Unique, random number generated by Operations Control Center (OCC) to Roadway Worker-in-Charge (RWIC) before fouling a track or starting work under CTC or Interlocking Rules

    Interlocking and Interlocking Appliances

    • Interlocking: arrangement of signals and appliances that must follow a specific sequence
    • Interlocking Appliance: movable apparatus that allows or prevents movements over designated routes, including switches, movable frogs, mitre rails, and derails
    • Blocking an Interlocking Appliance: applying an approved device to the control console to prevent operation
    • Securing an Interlocking Appliance: applying an approved device to prevent operation, or electrically disabling and mechanically locking the appliance in the required position

    Interlocking Limits and Signals

    • Interlocking Limits: tracks between the extreme opposing signals of an interlocking
    • Signal Block Limit Signal: fixed signal indicating the limit of a block under Manual Block System (MBS) rules
    • Cab Signal: signal in the engine control compartment indicating a permissible speed
    • Controlled Signal: fixed signal capable of displaying a Stop indication, controlled by the Rail Traffic Controller (RTC)

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    Description

    Test your knowledge on railway safety terminology including 'Blocking Device Removed (BDR) Code', 'Interlocking', and 'Interlocking Appliance'. Learn about unique codes used in railway operations and the rules and appliances designed to ensure safe train movements.

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