Gcor Abs System Quiz - 20 Questions

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  • 1/20 Questions

    What is Automatic Block Signal System (ABS)? Glossary

    • A series of consecutive blocks governed by block signals, cab signals, or both. The signals are activated by a train or by certain conditions that affect the block use.
    • A block system that uses block signal indications to authorize train movements.
    • A method of operation in non-signaled territory where trains, men, and equipment are authorized to occupy the main track in limits designated by the timetable.
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About This Quiz

This 20-question quiz assesses knowledge of the Automatic Block Signal System (ABS) as defined by the General Code of Operating Rules (GCOR). It evaluates understanding of main track authority, track warrant conditions, and signal protection in ABS territory, crucial for safety and compliance in railroad operations.

Gcor Abs System Quiz - 20 Questions - Quiz

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  • 2. 

    Where must the conductor of the UP 6871 position himself after lining the switch?   Rule 8.4

    • The conductor must go to the opposite side of the main track.

    • If unable to go to the opposite side of the track, the employee must stand at least 20 feet from the switch stand.

    • Both answers are correct.

    Correct Answer
    A. Both answers are correct.
    Explanation
    Both answers are correct. According to Rule 8.4, the conductor must either go to the opposite side of the main track or, if unable to do so, stand at least 20 feet from the switch stand. This ensures that the conductor is in a safe position after lining the switch.

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  • 3. 

    If a light is absent, a white light is displayed where a colored or lunar light should be, or additional colored or lunar lights are displayed.  Would it be okay to transmit by radio the aspect of this signal to another train, and how must a train treat an improperly displayed signal?   Rule 9.4 / 2.12

    • No, Treat it as the most restrictive signal.

    • No, only in an emergency.

    • Both answers are correct.

    Correct Answer
    A. Both answers are correct.
    Explanation
    Both answers are correct because they both state that it is not okay to transmit the aspect of the signal to another train. The first answer suggests treating the improperly displayed signal as the most restrictive signal, which means the train should follow the instructions of the most restrictive signal in the area. The second answer states that transmitting the aspect of the signal should only be done in an emergency situation. Therefore, both answers imply that it is not acceptable to transmit the signal aspect under normal circumstances.

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  • 4. 

    In regards to the previous question, if after passing the Clear block signal to enter the main track, the conductor radios you to stop.  Which of the following is required?  Rule 8.9 Item 10K

    • After the leading wheels have passed both insulated joints, the spring switch must be lined and locked for main track movement and a job briefing performed.

    • When stopping on a spring switch, the slack must be controlled.

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    After passing the Clear block signal to enter the main track, if the conductor radios to stop, Rule 8.9 Item 10K requires the following actions to be taken:
    1) After the leading wheels have passed both insulated joints, the spring switch must be lined and locked for main track movement.
    2) A job briefing must be performed.
    3) When stopping on a spring switch, the slack must be controlled. Therefore, all of the above actions are required in this situation.

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  • 5. 

    You are approaching the end of your limits and are required to "Clear Main Track at Last Named Point" to meet the UP 6871.  If possible, what must a crew member on the UP 6871 do while waiting for you to arrive?    ** Rule 6.9 ** 

    • Line the switch for an opposing train to leave the main track.

    • Within ABS, the switch should not be lined until the opposing train has entered the block in advance.

    • Both answers are correct.

    Correct Answer
    A. Both answers are correct.
    Explanation
    The crew member on the UP 6871 must line the switch for an opposing train to leave the main track. However, within ABS, the switch should not be lined until the opposing train has entered the block in advance.

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  • 6. 

    In ABS territory, when authorized to enter the signaled track, how is protection established?   Rule 9.17

    • A crew member or switch tender must open the switch and wait 5 minutes at the switch to establish block signal protection.

    • The control operator or dispatcher must verify that there are no conflicting movements before giving the authority

    • A track warrant will authorize main track use under the direction of the train dispatcher or as prescribed by Rule 6.13 (Yard Limits).

    Correct Answer
    A. A crew member or switch tender must open the switch and wait 5 minutes at the switch to establish block signal protection.
    Explanation
    In ABS territory, block signal protection is established by a crew member or switch tender opening the switch and waiting for 5 minutes at the switch. This action ensures that the track is clear and no conflicting movements are present, thus providing protection for the train entering the signaled track. This procedure is in accordance with Rule 9.17.

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  • 7. 

    Which of the following is correct regarding main track switches?   Rule 8.3 / 8.8

    • After lining the switch, the conductor must lock the switch and test the lock to ensure it is secure.

    • When authorized in TWC territory, a main track switch may be left open.

    • Both answers are correct.

    Correct Answer
    A. Both answers are correct.
    Explanation
    Both answers are correct. According to Rule 8.3/8.8, after lining the switch, the conductor must lock the switch and test the lock to ensure it is secure. Additionally, when authorized in TWC territory, a main track switch may be left open.

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  • 8. 

    Before you enter the siding to meet the UP 6871, you encounter a signal governing main track movement that is displaying a red aspect and has a number plate.  How must you proceed?   Rule 9.2.14

    • Proceed not exceeding 20 MPH

    • Stop before any part of train or engine passes the signal.

    • Proceed at restricted speed. Movement through the siding must be prepared to stop within half the range of vision (Rule 6.28)

    Correct Answer
    A. Proceed at restricted speed. Movement through the siding must be prepared to stop within half the range of vision (Rule 6.28)
    Explanation
    According to Rule 9.2.14, when encountering a signal displaying a red aspect and having a number plate before entering the siding to meet another train, the correct procedure is to proceed at restricted speed. This means that the movement through the siding must be prepared to stop within half the range of vision, as stated in Rule 6.28. Therefore, the train should proceed cautiously and be ready to stop if necessary.

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  • 9. 

    What is the definition of an Absolute Signal?

    • A block or interlocking signal without a number plate, or designated by an "A" marker.

    • An absolute signal controlled by a control operator.

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

    Correct Answer
    A. A block or interlocking signal without a number plate, or designated by an "A" marker.
    Explanation
    An absolute signal is defined as a block or interlocking signal without a number plate, or designated by an "A" marker. This means that it is a signal that does not have a number plate attached to it or is specifically marked with an "A" marker. This signal is used to indicate certain conditions or instructions to train operators.

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  • 10. 

    Under which of the following conditions may track warrants be issued to more than one train with the same limits.  Rule 14.4

    • Only when protected by an Automatic Block Signal system and permission is received to enter the overlapping limits from the employee(s) listed on the authority.

    • When protected by an Automatic Block Signal system and all trains are authorized to proceed in the same direction.

    • Only if a track warrant is issued to members of the same crew.

    Correct Answer
    A. When protected by an Automatic Block Signal system and all trains are authorized to proceed in the same direction.
    Explanation
    Track warrants may be issued to more than one train with the same limits when they are protected by an Automatic Block Signal system and all trains are authorized to proceed in the same direction. This means that multiple trains can be given permission to enter and occupy the same track section as long as they are all moving in the same direction and are protected by the signals of the Automatic Block Signal system. This ensures safe and efficient movement of trains on the track.

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  • 11. 

    Which of the following is an authority to occupy the main track in ABS territory? 

    • Rule 6.13 (Yard Limits)

    • Rule 10.3 (Track and Time)

    • Rule 15.2 (Protection by track Bulletin form B)

    Correct Answer
    A. Rule 6.13 (Yard Limits)
    Explanation
    In ABS territory, the authority to occupy the main track is given by Rule 6.13 (Yard Limits). This rule establishes the limits of the yard and specifies the conditions under which trains can enter and occupy the main track within those limits. It ensures that trains operating within the yard limits have the authority to occupy the main track without conflicting with other trains.

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  • 12. 
    When authorized to enter ABS territory, after lining the switch (a spring switch), a block signal governing your movement to the signaled track displays a Clear signal indication.  Will it be necessary to wait 5 minutes before entering the main?   Rule 9.17 - ProProfs

    When authorized to enter ABS territory, after lining the switch (a spring switch), a block signal governing your movement to the signaled track displays a Clear signal indication.  Will it be necessary to wait 5 minutes before entering the main?   Rule 9.17

    • Block signal protection is not required when operating a spring switch in ABS territory.

    • After waiting 5 minutes, the train may enter the main track.

    • The 5 minute wait is not required when a block signal governing movement to the signaled track indicates proceed.

    Correct Answer
    A. The 5 minute wait is not required when a block signal governing movement to the signaled track indicates proceed.
    Explanation
    The 5 minute wait is not required when a block signal governing movement to the signaled track indicates proceed. This means that if the block signal is displaying a clear signal indication, the train can enter the main track immediately without having to wait for 5 minutes. Additionally, block signal protection is not required when operating a spring switch in ABS territory.

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  • 13. 

    You are now stopped on the main track at an absolute signal displaying STOP outside interlocking limits that is not a control point; however you have a track warrant that grants authority beyond the signal.  How may you pass the absolute signal displaying STOP?  ** Rule 9.12.4 ** 

    • Proceed at restricted speed when a crew member has contacted the train dispatcher and obtained permission to pass the STOP indication. If the train dispatcher cannot be contacted, move 100 feet past the signal, wait 5 minutes, and then proceed at restricted speed.

    • Proceed at restricted speed, if authority beyond the signal is joint with other trains or employees.

    • Both answers are correct.

    Correct Answer
    A. Both answers are correct.
    Explanation
    Both answers are correct. The first answer states that you can pass the absolute signal displaying STOP if a crew member has contacted the train dispatcher and obtained permission to do so. The second answer states that you can pass the signal at restricted speed if authority beyond the signal is joint with other trains or employees.

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  • 14. 

    In ABS territory, under which of the following conditions would a train be required to establish block signal protection by opening a switch and waiting 5 minutes?   Rule 9.17

    • A switch to enter the main track is not quipped with an electric lock.

    • The block to be entered is occupied by a train that is standing or moving away from the switch to be used.

    • Block signals governing main track movement indicate that a train is not approaching in either direction.

    Correct Answer
    A. A switch to enter the main track is not quipped with an electric lock.
    Explanation
    If a switch to enter the main track is not equipped with an electric lock, a train would be required to establish block signal protection by opening the switch and waiting 5 minutes. This is because without an electric lock, the switch cannot be automatically secured, and therefore the train must manually ensure that the switch is properly aligned and locked before proceeding onto the main track. The 5-minute waiting period allows for any potential conflicts or issues to be resolved before the train proceeds.

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  • 15. 

    After passing the Clear signal, the conductor has returned to the cab of the locomotive and your train is again ready to continue.  The next signal is displaying a Clear indication, how will you proceed in ABS territory?   ** Rule 9.9A ** 

    • 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.

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

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

    Correct Answer
    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.
    Explanation
    According to Rule 9.9A, when the next signal is displaying a Clear indication in ABS territory, the train must 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. This ensures that the train proceeds with caution and is prepared to stop if necessary.

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  • 16. 

    In regards to the previous question, would your actions be different if you were stopped at a Control Point in TWC/ABS territory? Explain...   ** Rule 9.12.4 **

    • No, contact dispatcher

    • No, Stop and contact dispatcher.

    • Both answers are correct

    Correct Answer
    A. Both answers are correct
    Explanation
    Both answers are correct because Rule 9.12.4 states that if you are stopped at a Control Point in TWC/ABS territory, you should contact the dispatcher. Therefore, whether you choose to stop or not, the important action is to contact the dispatcher in this situation.

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  • 17. 

    When entering a signaled territory, if there is no block signal governing movement to the main track, how must you proceed to the next governing signal?   ** Rule 9.10 ** 

    • 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.

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

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

    Correct Answer
    A. Proceed at restricted speed until the leading wheels have passed the next governing signal or the end of the block system.
    Explanation
    Proceed at restricted speed until the leading wheels have passed the next governing signal or the end of the block system. This means that the train must move at a speed that allows it to stop within half the range of vision, be able to take necessary action to avoid an obstruction, and be able to stop before reaching any train, obstruction, or switch not properly lined and locked. The train must maintain this restricted speed until it has passed the next governing signal or the end of the block system.

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  • 18. 
    The absolute signal (not a control point) that governs movement to the main track continues to display a STOP Indication; however the UP 6871 is between the siding switches.  After lining the switch, will it be necessary for the  UP 5267 East to wait 5 minutes before entering the main?                                                                                ** Rule 9.12.4 C / 9.17 **  - ProProfs

    The absolute signal (not a control point) that governs movement to the main track continues to display a STOP Indication; however the UP 6871 is between the siding switches.  After lining the switch, will it be necessary for the  UP 5267 East to wait 5 minutes before entering the main?                                                                                ** Rule 9.12.4 C / 9.17 ** 

    • Yes

    • No

    Correct Answer
    A. No
    Explanation
    According to Rule 9.12.4 C / 9.17, if the absolute signal governing movement to the main track displays a STOP Indication, the train must wait before entering the main. However, in this scenario, the UP 6871 is already between the siding switches, which means it has already passed the signal. Therefore, it will not be necessary for the UP 5267 East to wait 5 minutes before entering the main track.

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  • 19. 
    The train below needs to make a return movement and it will be necessary to shove past an absolute signal, not a control point, displaying STOP outside of interlocking limits.  Will it be necessary to contact the dispatcher since equiptment has been left on the main track in TWC/ABS?   ** Rule 9.12.4 **  - ProProfs

    The train below needs to make a return movement and it will be necessary to shove past an absolute signal, not a control point, displaying STOP outside of interlocking limits.  Will it be necessary to contact the dispatcher since equiptment has been left on the main track in TWC/ABS?   ** Rule 9.12.4 ** 

    • After stopping a crew member must contact the train dispatcher or control operator and obtain authority to pass the STOP indication.

    • Permission for a reverse movement will not be required since movement is within the same signaled block.

    • Movement may proceed at restricted speed to permit an engine, with or without cars, to couple to its train or to a standing cut of cars, if the track between the engine and cars is clear.

    Correct Answer
    A. Movement may proceed at restricted speed to permit an engine, with or without cars, to couple to its train or to a standing cut of cars, if the track between the engine and cars is clear.
    Explanation
    The train can proceed at restricted speed to couple to its train or a standing cut of cars as long as the track between the engine and cars is clear. The rule states that permission for a reverse movement is not required since it is within the same signaled block. However, after stopping, a crew member must contact the train dispatcher or control operator and obtain authority to pass the STOP indication.

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  • 20. 

    You have passed a Stop indication and the next governing signal is about 1 1/4 mile ahead and is displaying a Clear indication.  When may you comply with this signal?   ** Rule 9.8 / 9.11 **  

    • The signal may be complied with when its aspect can be clearly seen, and the signal governs the track where movement is occurring or will be made.

    • The signal may not be complied with if a signal or rule requires movement at restricted speed.

    • The signal may be immediately complied with when its aspect can be clearly seen, and the train has cleared the siding and is operating on the main track.

    Correct Answer
    A. The signal may not be complied with if a signal or rule requires movement at restricted speed.
    Explanation
    The correct answer states that the signal may not be complied with if a signal or rule requires movement at restricted speed. This means that if there is a signal or rule that mandates the train to move at a slower speed, the train cannot comply with the signal displaying a Clear indication. The train must continue to operate at the restricted speed until it is safe to do otherwise.

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  • Mar 17, 2023
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