Interlocking Limits Quiz - 15 Questions

15 Questions | Total Attempts: 66

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Interlocking Limits Quiz - 15 Questions

Interlocking Limits


Questions and Answers
  • 1. 
    What is an Interlocking?
    • A. 

      A railroad crossing at grade.

    • B. 

      Signal appliances that are interconnected so that each of their movements follows the other in a proper sequence. Interlocking's may be operated manually or automatically.

    • C. 

      The fixed signals of an interlocking that govern trains using interlocking limits.

  • 2. 
    What is Interlocking Limits?
    • A. 

      Signal appliances that are interconnected so that each of their movements follows the other in a proper sequence. Interlockings may be operated manually or automatically.

    • B. 

      The tracks between outer opposing absolute signals of an interlocking.

    • C. 

      The fixed signals of an interlocking that governs trains using interlocking limits.

  • 3. 
    What is a block signal?
    • A. 

      A fixed signal at the entrance of a block that governs trains entering and using that block.

    • B. 

      A fixed signal that is fixed to a location permanently and that indicates a condition affecting train movement.

    • C. 

      A length of track between consecutive block signals.

  • 4. 
    A "Block" is the length of track ________
    • A. 

      Between consecutive block signals or between a block signal and the end of block system limits.

    • B. 

      In ATC limits, the use of which is governed by cab signals and / or block signals.

    • C. 

      Both answers are correct

  • 5. 
    Can an interlocking signal function as a block signal?Rule 9.3
    • A. 

      Yes

    • B. 

      No

  • 6. 
    When operating in non-signaled territory, what may govern the approach to an interlocking?Glossary
    • A. 

      Block signal

    • B. 

      Distant signal

    • C. 

      Controlled signal

  • 7. 
    The train you are operating has passed a block signal (or distant signal clear) that governs the approach to an Automatic Interlocking at 20 mph.  How must your movement approach the interlocking?  Rule 9.1.1 / 9.9.1
    • A. 

      Proceed at restricted speed. The train must maintain this speed until the next signal is visible, that signal displays a proceed indication, and the track to that signal is clear.

    • B. 

      Proceed prepared to stop at the next signal until the next signal is visible and that signal displays a proceed indication.

    • C. 

      The train must continue to move prepared to stop at the interlocking signal until the train reaches a point approximately 1,000 feet from that signal. If the interlocking signal then indicates proceed, the train may resume speed.

  • 8. 
    How will a train be governed at a STOP indication that governs movement over an Automatic Interlocking?  Rule 9.12.3
    • A. 

      At a signal displaying a STOP indication, the crew will be governed by instructions in the release box.

    • B. 

      If the train dispatcher cannot be contacted, move 100 feet past the interlocking signal, wait 5 minutes, and then proceed at restricted speed.

    • C. 

      A crew member must immediately contact the control operator unless the train is within track and time limits.

  • 9. 
    If operating within limits of a Track Warrant, with Box 7 "Work Between" marked, how may a train pass a Stop indication governing an Automatic Interlocking?   Rule 9.12.3
    • A. 

      At a signal displaying a STOP indication, the crew will be governed by instructions in the release box.

    • B. 

      A crew must obtain verbal authority from the control operator or receive a controlled signal that indicates proceed.

    • C. 

      If the train dispatcher cannot be contacted, move 100 feet past the interlocking signal, wait 5 minutes, then proceed at restricted speed.

  • 10. 
    The rear of the train has stopped between the outer opposing signals of a Manual Interlocking and needs to change direction.  What, if anything, is required before changing direction?   Rule 6.4.2 
    • A. 

      A crew member must inspect the signals on the opposing track to ensure that a STOP indication is displayed. The train may then move only on the crew member's signal.

    • B. 

      If at least one car length remains between the outer opposing signals a change of direction may be made without permission.

    • C. 

      The crew must obtain permission from the control operator to change directions.

  • 11. 
    If operating within the limits of Track and Time, may a train pass a STOP indication governing a Manual Interlocking?Rule 10.3
    • A. 

      Within the limits of track and time, a train may pass a signal displaying STOP without stopping.

    • B. 

      After stopping at a signal displaying STOP, a train may pass the signal at restricted speed.

    • C. 

      Track and time does not authorize trains to occupy the track(s) within interlocking limits.

  • 12. 
    In CTC, if you pass a block signal that governs the approach to a Manual Interlocking and your speed is reduced below 10 MPH.  How must your movement approach the interlocking?   ** Rule 9.9 **
    • A. 

      Proceed at restricted speed. The train must maintain this speed until the next signal is visible, that signal displays a proceed indication, and the track to that signal is clear.

    • B. 

      Proceed prepared to stop at the next signal until the next signal is visible and that signal displays a proceed indication.

    • C. 

      Proceed at restricted speed until the leading wheels have passed the next governing signal or the end of the block system.

  • 13. 
    How must a train approach a railroad crossing at grade that is NOT protected by interlocking signals?   Rule 6.16 
    • A. 

      Prepared to stop. If a stop sign protects the area, the train must stop before any part of the train or engine passes the stop sign.

    • B. 

      If a gate is lined against the intended route, trains and engines must stop and remain at least 50 feet from fouling the track on the conflicting route until the gate is changed to the stop position on the conflicting route.

    • C. 

      Both answers are correct

  • 14. 
    When moving against the current of traffic, how must a train approach interlocking and block signals?  ** Rule 6.25 ** 
    • A. 

      Prepare to stop unless signals indicate proceed.

    • B. 

      25 MPH

    • C. 

      Both answers are correct

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