NORAC - 10th Edition - Definitions

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  • 1/49 Questions

    NORAC - 10th Edition - Definitions A block that must not be occupied by more than one train.

    • Absolute Block
    • Block
    • Siding
    • Interlocking
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NORAC Quizzes & Trivia
About This Quiz

This quiz focuses on definitions from the NORAC 10th Edition, covering key operational terms such as blocks, signals, and automatic systems crucial for railroad safety and management. It tests understanding of essential railroad operation concepts.

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  • 2. 

    NORAC - 10th Edition – Definitions   A block signal that is activated either by track circuit or in conjunction with interlocking or controlled point circuits. 

    • Block Signal

    • Automatic Block Signal

    • Distant Signal

    • Controlled Signal

    Correct Answer
    A. Automatic Block Signal
    Explanation
    An automatic block signal is a type of block signal that is activated either by a track circuit or in conjunction with interlocking or controlled point circuits. This means that the signal is automatically activated based on the presence of trains on the track or the status of other signaling systems. It helps to ensure safe and efficient train operations by providing clear indications to train operators about the status of the track ahead.

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  • 3. 

    NORAC - 10th Edition – Definitions   A block signal system in which the use of each block is governed by an automatic block signal, cab signal, or both.

    • Block Signal

    • Automatic Block Signal

    • Automatic Block Signal System (ABS)

    • Controlled Signal

    Correct Answer
    A. Automatic Block Signal System (ABS)
    Explanation
    An automatic block signal system (ABS) is a type of block signal system that governs the use of each block. It utilizes automatic block signals, cab signals, or both to control the movement of trains. This means that trains can only enter a block when they receive a signal indicating that it is clear and safe to do so. The ABS system helps to ensure the safe and efficient operation of trains by providing clear indications and instructions to train operators.

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  • 4. 

    NORAC - 10th Edition – Definitions   A device on an engine which will cause a penalty application of the brakes if the engineer fails to acknowledge a cab signal change to a more restrictive indication.

    • Cab Signal

    • Speed Control

    • Automatic Block Signal System (ABS)

    • Automatic Train Stop

    Correct Answer
    A. Automatic Train Stop
    Explanation
    Automatic Train Stop (ATS) is a device on an engine that applies the brakes as a penalty if the engineer fails to acknowledge a cab signal change to a more restrictive indication. This means that if the engineer does not respond appropriately to a change in the cab signal, the ATS will automatically apply the brakes to ensure the safety of the train. ATS is a safety measure that helps prevent accidents by enforcing compliance with signal indications.

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  • 5. 

    NORAC - 10th Edition – Definitions   A length of track with defined limits on which train movements are governed by block signals, cab signals, or Form D.

    • Block

    • Siding

    • Running Track

    • Main Track

    Correct Answer
    A. Block
    Explanation
    A block refers to a length of track with defined limits where train movements are controlled by block signals, cab signals, or Form D. This means that trains can only move within this specific section of track and must adhere to the signals and instructions given. The other options, such as siding, running track, and main track, do not specifically refer to the defined limits and control mechanisms mentioned in the definition.

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  • 6. 

    NORAC - 10th Edition – Definitions   A fixed signal displayed to trains at the entrance of a block to govern use of that block.

    • Home Signal

    • Block Signal

    • Controlled Signal

    • Interlocking Signal

    Correct Answer
    A. Block Signal
    Explanation
    A block signal is a fixed signal displayed to trains at the entrance of a block to govern the use of that block. This signal indicates whether the block is clear for the train to proceed or if it is occupied by another train. It helps to maintain safe and efficient train movement by controlling the flow of trains in a block system.

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  • 7. 

    NORAC - 10th Edition – Definitions   A lever, plug, ring, or other method of control that restricts the operation of a switch or signal.

    • Spring Switch

    • Speed Control

    • Blocking Device

    • Bolt-Lock Switch

    Correct Answer
    A. Blocking Device
    Explanation
    A blocking device refers to a lever, plug, ring, or any other control mechanism that limits or restricts the functioning of a switch or signal. It is used to prevent accidental or unauthorized operation of the switch or signal, ensuring safety and control in various systems or equipment.

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  • 8. 

    NORAC - 10th Edition – Definitions   A hand-operated switch equipped with a pipe connected locking device that is designed to shunt the signal system before the switch points are operated.

    • Blocking Device

    • Spring Switch

    • Semi-Automatic Switch

    • Bolt-Lock Switch

    Correct Answer
    A. Bolt-Lock Switch
    Explanation
    A bolt-lock switch is a hand-operated switch that has a pipe connected locking device. This locking device is designed to shunt the signal system before the switch points are operated. This means that the switch can be locked in a certain position to prevent any signals from being sent or received until the switch points are moved. This ensures safety and prevents any accidental signaling or movement of trains before the switch is properly set.

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  • 9. 

    NORAC - 10th Edition – Definitions   A publication used to notify employees of changes to rules, procedures, or other instructions affecting the movement of trains and issued periodically by the designated officer.

    • General Order

    • Division Notice

    • Bulletin Order

    Correct Answer
    A. Bulletin Order
    Explanation
    A Bulletin Order is a publication that is used to inform employees about changes to rules, procedures, or other instructions that impact the movement of trains. It is issued periodically by the designated officer.

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  • 10. 

    NORAC - 10th Edition – Definitions   Located in the engine control compartment, this signal is used in conjunction with interlocking signals (with or in lieu of block signals) and indicates track occupancy or condition. 

    • Cab Signal

    • Automatic Block Signal

    • Automatic Block Signal System (ABS)

    • Home Signal

    Correct Answer
    A. Cab Signal
    Explanation
    The correct answer is Cab Signal. A cab signal is a signal located in the engine control compartment that is used in conjunction with interlocking signals to indicate track occupancy or condition. It is often used in place of or in addition to block signals.

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  • 11. 

    NORAC - 10th Edition – Definitions   The location where the Operator is on duty, from which remote control signal appliances or switches are operated.

    • Controlled Point

    • Control Station

    • Controlled Siding

    • Interlocking Station

    Correct Answer
    A. Control Station
    Explanation
    A control station is the location where the Operator is on duty and operates remote control signal appliances or switches. It is the central point from which the Operator can control and monitor various aspects of a system or process. This term is commonly used in the context of transportation systems, such as railways or air traffic control, where a control station is responsible for managing the movement of trains or planes.

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  • 12. 

    NORAC - 10th Edition – Definitions   A station designated in the Timetable where signals are remotely controlled from the control station.

    • Controlled Point

    • Controlled Siding

    • Interlocking

    • Siding

    Correct Answer
    A. Controlled Point
    Explanation
    A controlled point is a station designated in the Timetable where signals are remotely controlled from the control station. This means that the signals at the controlled point are operated and controlled by personnel at a central control station rather than being manually operated at the station itself. This allows for more efficient and centralized control of train movements and signal operations.

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  • 13. 

    NORAC - 10th Edition – Definitions   A circuited track in which both ends are controlled and governed by signals under the control of a Dispatcher or Operator.

    • Controlled Siding

    • Controlled Signal

    • Interlocking

    • Interlocking Station

    Correct Answer
    A. Controlled Siding
    Explanation
    A controlled siding refers to a section of a track that is controlled and governed by signals under the control of a Dispatcher or Operator. This means that both ends of the track have signals that are operated by a dispatcher or operator, ensuring that trains can enter and exit the siding safely. This helps to maintain the flow of train traffic and prevent any accidents or collisions.

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  • 14. 

    NORAC - 10th Edition – Definitions   A fixed signal, capable of displaying Stop indication, that is controlled by a Dispatcher or Operator.

    • Distant Signal

    • Home Signal

    • Block Signal

    • Controlled Signal

    Correct Answer
    A. Controlled Signal
    Explanation
    A controlled signal refers to a fixed signal that is under the control of a Dispatcher or Operator and has the capability to display a Stop indication. This means that the signal can be operated remotely by a dispatcher or operator, allowing them to control the flow of train traffic by indicating when a train should stop.

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  • 15. 

    NORAC - 10th Edition – Definitions   The assigned direction of moment as specified in the Timetable.

    • Crossover

    • Current of Traffic

    • Special Instruction

    • Running Track

    Correct Answer
    A. Current of Traffic
    Explanation
    The correct answer is "Current of Traffic". In the context of NORAC - 10th Edition definitions, "Current of Traffic" refers to the assigned direction of moment as specified in the Timetable. This term is used to indicate the direction in which trains are expected to move on a particular track or section. It helps to ensure the safe and efficient movement of trains by establishing a consistent flow of traffic.

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  • 16. 

    NORAC - 10th Edition – Definitions   A fixed signal used to govern the approach of a train to a home signal.

    • Home Signal

    • Distant Signal

    • Block Signal

    • Controlled Signal

    Correct Answer
    A. Distant Signal
    Explanation
    A distant signal is a fixed signal used to govern the approach of a train to a home signal. It is located at a distance from the home signal and provides advance warning to the train operator about the status of the home signal. The distant signal allows the train operator to adjust the train's speed and prepare for any upcoming changes in signal indications. It helps in maintaining safe distances between trains and preventing collisions.

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  • 17. 

    NORAC - 10th Edition – Definitions   The portion of a railroad system assigned to the supervision of a Superintendent.

    • Station

    • Yard

    • Line

    • Division

    Correct Answer
    A. Division
    Explanation
    The correct answer is "Division". In the context of a railroad system, a division refers to a specific portion of the system that is assigned to the supervision of a Superintendent. This means that the Superintendent is responsible for overseeing the operations and management of that particular section of the railroad. The other options, such as Station, Yard, and Line, do not specifically refer to a portion of the railroad system assigned to a Superintendent's supervision.

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  • 18. 

    NORAC - 10th Edition – Definitions   A publication issued periodically by the designated officer, which contains instructions or information which do not affect the movement of trains.

    • General Order

    • Division Notice

    • Bulletin Order

    Correct Answer
    A. Division Notice
    Explanation
    A Division Notice is a publication issued periodically by the designated officer that contains instructions or information that do not affect the movement of trains. This means that it provides general information or instructions that are not directly related to the operation or scheduling of train movements. It is different from a General Order or Bulletin Order, which may contain instructions that directly impact train movements.

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  • 19. 

    NORAC - 10th Edition – Definitions   A power-operated switch also equipped for hand operation.

    • Dual Control Switch

    • Switch

    • Spring Switch

    • Bolt-Lock Switch

    Correct Answer
    A. Dual Control Switch
    Explanation
    A dual control switch is a type of power-operated switch that can also be operated manually by hand. This means that it can be controlled both electronically and manually, providing flexibility in how it is operated.

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  • 20. 

    NORAC - 10th Edition – Definitions   A unit or combination of units propelled by any form of energy.

    • Engine

    • Train

    • Consist

    • Track Car

    Correct Answer
    A. Engine
    Explanation
    An engine is a unit or combination of units that is propelled by any form of energy. It is responsible for providing the power and propulsion to a train or any other vehicle. In the context of the given question, the correct answer is "Engine" because it aligns with the definition provided in the NORAC - 10th Edition – Definitions.

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  • 21. 

    NORAC - 10th Edition – Definitions   A train not designated by a Timetable schedule.

    • Camp Car

    • Extra Train

    • Scheduled Train

    • Engine

    Correct Answer
    A. Extra Train
    Explanation
    An extra train refers to a train that is not designated by a Timetable schedule. This means that it is not part of the regular scheduled trains and is instead added to accommodate additional passengers or freight. The term "extra train" is used to distinguish it from scheduled trains that operate according to a predetermined timetable.

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  • 22. 

    NORAC - 10th Edition – Definitions   Being in such proximity to a track individual, tools or equipment could be struck by a moving train or other that an on-track equipment, or in any case is within four feet of the nearest rail.

    • Fouling Point

    • Fouling a Track

    • Yard Limits

    Correct Answer
    A. Fouling a Track
    Explanation
    Fouling a track refers to the situation where an individual, tools, or equipment is within four feet of the nearest rail and could be struck by a moving train or on-track equipment. This is a safety concern as it poses a risk of accidents or damage to the individual or equipment.

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  • 23. 

    NORAC - 10th Edition – Definitions   The point on a track beyond which equipment will foul an adjacent track.

    • Yard Limits

    • Fouling a Track

    • Foul Point

    • Interlocking

    Correct Answer
    A. Foul Point
    Explanation
    The correct answer is "Foul Point". In railway terminology, the foul point refers to the point on a track where equipment or objects will interfere or obstruct an adjacent track. This means that if any equipment or object goes beyond the foul point, it will potentially cause a collision or obstruction on the adjacent track. It is important for railway operators to be aware of the foul point to ensure the safe movement of trains and equipment.

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  • 24. 

    NORAC - 10th Edition – Definitions   A publication used to summarize changes to the Timetable and other instruction manuals which is issued periodically by the designated officer.

    • General Order

    • Division Notice

    • Bulletin Order

    Correct Answer
    A. General Order
    Explanation
    A General Order is a publication used to summarize changes to the Timetable and other instruction manuals. It is issued periodically by the designated officer.

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  • 25. 

    NORAC - 10th Edition – Definitions   A fixed signal governing entrance to an interlocking or controlled point.

    • Interlocking Signal

    • Home Signal

    • Controlled Signal

    • Distant Signal

    Correct Answer
    A. Home Signal
    Explanation
    A home signal is a fixed signal that governs entrance to an interlocking or controlled point. It is used to indicate whether a train has permission to proceed or must stop. This signal is typically located at the entrance of a station or interlocking area and is used to control the movement of trains. It ensures safe and efficient operation by allowing only one train at a time to enter a specific section of track.

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  • 26. 

    NORAC - 10th Edition – Definitions   An interconnection of signals and signal appliances such that their movements must succeed each other in a predetermined sequence, assuring that signals cannot be displayed simultaneously on conflicting routes.

    • Interlocking

    • Controlled Siding

    • Running Track

    • Main Track

    Correct Answer
    A. Interlocking
    Explanation
    An interlocking is a system of signals and signal appliances that are interconnected in such a way that their movements must occur in a specific sequence. This ensures that signals cannot be displayed simultaneously on conflicting routes. In other words, it is a mechanism that controls the movements of trains and prevents conflicting movements from occurring.

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  • 27. 

    NORAC - 10th Edition – Definitions   The track between the opposing home signals of an interlocking.

    • Controlled Siding

    • Interlocking Limits

    • Running Track

    • Block

    Correct Answer
    A. Interlocking Limits
    Explanation
    The correct answer is "Interlocking Limits". Interlocking limits refer to the track between the opposing home signals of an interlocking. This means that it is the section of track that is controlled and monitored by the interlocking system, ensuring safe and efficient movement of trains.

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  • 28. 

    NORAC - 10th Edition – Definitions   The fixed signals of an interlocking.

    • Interlocking Signals

    • Home Signals

    • Controlled Signals

    • Distant Signals

    Correct Answer
    A. Interlocking Signals
    Explanation
    Interlocking signals refer to the fixed signals of an interlocking system. An interlocking system is a safety mechanism used in railroads to prevent conflicting movements and ensure safe operations. The interlocking signals are strategically placed at various points along the tracks to indicate to train operators whether it is safe to proceed or if there are any restrictions or hazards ahead. These signals are an integral part of the interlocking system and play a crucial role in maintaining the safety and efficiency of train operations.

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  • 29. 

    NORAC - 10th Edition – Definitions   A location from which an interlocking is operated.

    • Control Station

    • Temporary Block Station

    • Dispatcher's Office

    • Interlocking Station

    Correct Answer
    A. Interlocking Station
    Explanation
    An interlocking station is a location from which an interlocking is operated. Interlocking refers to a system of signals and switches that ensure the safe movement of trains by preventing conflicting movements. Therefore, an interlocking station is the correct answer as it is the specific location where the interlocking system is controlled and operated. Control Station, Temporary Block Station, and Dispatcher's Office may be related to railway operations, but they do not specifically refer to the location where an interlocking is operated.

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  • 30. 

    NORAC - 10th Edition – Definitions   A track designated by Timetable upon which train movements are authorized by ABS, DCS, or interlocking rules.

    • Main Track

    • Running Track

    • Industrial Track

    • Controlled Siding

    Correct Answer
    A. Main Track
    Explanation
    The correct answer is Main Track. In the context of NORAC - 10th Edition Definitions, a main track refers to a track that is designated by the timetable for authorized train movements. These movements can be authorized by ABS (Automatic Block Signal), DCS (Dispatcher Control System), or interlocking rules.

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  • 31. 

    NORAC - 10th Edition – Definitions   A reflector, flag, or highly visible marking device, in the red-orange-amber range, affixed to the rear of a train to indicate that the train is complete.

    • Fixed Signal

    • Marker

    • Signal

    • Block Signal

    Correct Answer
    A. Marker
    Explanation
    A marker is a reflector, flag, or highly visible marking device that is affixed to the rear of a train. Its purpose is to indicate that the train is complete. This helps other railway personnel and operators to easily identify that the entire train has passed and there are no more cars or wagons remaining. The marker is usually in the red-orange-amber range, making it highly visible and easily distinguishable from a distance.

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  • 32. 

    NORAC - 10th Edition – Definitions   The specific operating rule or group of operating rules that govern the use of tracks, as designated by the Timetable.

    • Rules-in-Effect

    • Special Instruction

    • General Order

    • Division Notice

    Correct Answer
    A. Rules-in-Effect
    Explanation
    The correct answer is "Rules-in-Effect". In the context of NORAC - 10th Edition, "Rules-in-Effect" refers to the specific operating rules or group of operating rules that govern the use of tracks. These rules are designated by the Timetable, which means they are the current and applicable rules that must be followed by train operators. The other options listed (Special Instruction, General Order, and Division Notice) are also types of operating rules, but in this case, "Rules-in-Effect" is the most appropriate answer as it specifically refers to the governing rules designated by the Timetable.

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  • 33. 

    NORAC - 10th Edition – Definitions   The part of the Timetable that prescribes direction, number, frequency, and times for movement of designated trains.

    • General Order

    • Division Notice

    • Special Notice

    • Schedule

    Correct Answer
    A. Schedule
    Explanation
    A schedule is a part of the timetable that provides specific information about the direction, number, frequency, and times for the movement of designated trains. It is a detailed plan that outlines the specific arrangements for train movements. A schedule helps ensure that trains operate efficiently and safely by providing clear instructions on when and where trains should be at any given time. It is an essential document for railway operations and plays a crucial role in maintaining a smooth and organized train service.

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  • 34. 

    NORAC - 10th Edition – Definitions   A train designated by Timetable Schedule.

    • Extra Train

    • Track Car

    • Scheduled Train

    • Camp Car

    Correct Answer
    A. Scheduled Train
    Explanation
    The correct answer is "Scheduled Train". In the NORAC - 10th Edition Definitions, a train designated by Timetable Schedule is referred to as a "Scheduled Train". This means that the train is planned and scheduled according to a predetermined timetable. The other options, such as Extra Train, Track Car, and Camp Car, do not fit the given definition and are therefore incorrect.

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  • 35. 

    NORAC - 10th Edition – Definitions   A signal as viewed from the direction of an approaching train, or on the cab signal display unit in the engine control compartment.

    • Signal Indication

    • Signal Name

    • Signal Aspect

    • Cab Signal

    Correct Answer
    A. Signal Aspect
    Explanation
    The correct answer is "Signal Aspect". In the context of NORAC - 10th Edition Definitions, a signal aspect refers to the visual indication of a signal, as viewed from the direction of an approaching train or on the cab signal display unit in the engine control compartment. This term is used to describe the different aspects or aspects of a signal, such as red, yellow, or green, that convey specific instructions to train operators.

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  • 36. 

    NORAC - 10th Edition – Definitions   The required action conveyed by the aspect of a signal.

    • Signal Indication

    • Signal Instruction

    • Rules-in-Effect

    • Special Instruction

    Correct Answer
    A. Signal Indication
    Explanation
    The term "signal indication" refers to the required action conveyed by the aspect of a signal. In other words, it is the information or instruction provided by a signal that tells the recipient what action to take. This could include instructions such as stopping, proceeding with caution, or changing direction. The term "signal indication" is used to describe the specific action that is conveyed by a signal's aspect.

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  • 37. 

    NORAC - 10th Edition – Definitions   A device on an engine which will cause a penalty application of the brakes if the engineer fails to reduce the train’s speed to the speed required by the cab signal indication.

    • Automatic Train Stop (ATS)

    • Speed Control

    • Automatic Block Signal

    • Automatic Block Signal System (ABS)

    Correct Answer
    A. Speed Control
    Explanation
    Speed control refers to a device on an engine that penalizes the engineer by applying the brakes if they fail to reduce the train's speed to the required speed indicated by the cab signal. This device ensures that the train maintains the appropriate speed for safety reasons and prevents accidents or collisions.

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  • 38. 

    NORAC - 10th Edition – Definitions   A place designated in the Timetable by name.

    • Junction

    • Switch

    • Station

    • Street

    Correct Answer
    A. Station
    Explanation
    A station is a place designated in the Timetable by name. This means that in the context of the NORAC - 10th Edition – Definitions, a station refers to a specific location that is identified by a name in the timetable. It could be a train station, bus station, or any other type of transportation station. This definition excludes options like junction, switch, and street, as they do not fit the criteria of being designated in the timetable by name.

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  • 39. 

    NORAC - 10th Edition – Definitions   A manned station that is established by Bulletin Order or Form D to control the movement of trains.

    • Station

    • Interlocking Station

    • Control Station

    • Temporary Block Station

    Correct Answer
    A. Temporary Block Station
    Explanation
    A temporary block station is a manned station that is established by Bulletin Order or Form D to control the movement of trains. This means that it is a station that is set up temporarily to manage the flow of trains, likely due to maintenance or construction work happening on the tracks. It is not a permanent station like a regular station or an interlocking station, but rather a temporary solution to ensure the safe and efficient movement of trains during a specific period of time.

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  • 40. 

    NORAC - 10th Edition – Definitions   An engine with or without cars.

    • Train

    • Engine

    • Track Car

    • Camp Car

    Correct Answer
    A. Train
    Explanation
    The correct answer is "Train" because a train is composed of an engine and one or more cars. It can include both passenger and freight cars. The other options listed, such as engine, track car, and camp car, are all components or types of cars that can be part of a train. Therefore, a train can consist of an engine with or without cars.

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  • 41. 

    NORAC - 10th Edition – Definitions   A system of tracks used for the making up of trains.

    • Switch

    • Yard

    • Interlocking

    • Junction

    Correct Answer
    A. Yard
    Explanation
    The correct answer is "Yard". In the context of NORAC - 10th Edition Definitions, a yard refers to a system of tracks used for the making up of trains. This means that a yard is a designated area where trains are assembled or disassembled, and it typically consists of multiple tracks and switches.

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  • 42. 

    NORAC - 10th Edition – Definitions   A designated track on which movements may be made by signal indication or at Restricted Speed under the authority of an employee designated in the Timetable.

    • Main Track

    • Controlled Siding

    • Running Track

    • Interlocking

    Correct Answer
    A. Running Track
    Explanation
    A running track is a designated track on which movements may be made by signal indication or at Restricted Speed under the authority of an employee designated in the Timetable. This means that trains can move on a running track based on signals or at a restricted speed, as authorized by an employee specified in the Timetable. It is different from a main track, controlled siding, or interlocking, which have their own specific definitions and purposes.

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  • 43. 

    NORAC - 10th Edition – Definitions   A printed booklet that contains schedules and/or special instructions affecting the movement of trains.

    • Schedule

    • Timetable

    • General Order

    • Bulletin Order

    Correct Answer
    A. Timetable
    Explanation
    The correct answer is "Timetable". A timetable is a printed booklet that contains schedules and/or special instructions affecting the movement of trains. It provides information about the departure and arrival times of trains, as well as any specific instructions or changes to the regular schedule.

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  • 44. 

    NORAC - 10th Edition – Definitions   The movement of an uncoupled engine (or engines) or leading portion of a train, directed back toward the remaining stationary portion of the same train.

    • Current of Traffic

    • Crossover

    • Return Movement

    • Reverse Movement

    Correct Answer
    A. Return Movement
    Explanation
    Return Movement refers to the movement of an uncoupled engine or leading portion of a train that is directed back towards the remaining stationary portion of the same train. This means that the engine or leading portion of the train is moving in the opposite direction to where it was originally going, in order to rejoin the rest of the train.

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  • 45. 

    NORAC – 10th Edition – Definitions   A movement opposite the direction previously authorized.

    • Current of Traffic

    • Crossover

    • Return Movement

    • Reverse Movement

    Correct Answer
    A. Reverse Movement
    Explanation
    The term "reverse movement" refers to a movement that goes in the opposite direction of the previously authorized direction. It implies a change in direction or a movement that goes back or opposite to the initial direction. This term is often used in the context of traffic or transportation to describe a change in the flow of vehicles or a movement that goes against the established traffic pattern.

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  • 46. 

    NORAC – 10th Edition – Definitions   Speeds:  NORMAL SPEED:

    • 45 MPH

    • 60 MPH

    • 80 MPH

    • The maximum authorized speed.

    Correct Answer
    A. The maximum authorized speed.
    Explanation
    The correct answer is "The maximum authorized speed." This means that the speeds mentioned (45 MPH, 60 MPH, 80 MPH) are the highest speeds that are allowed or authorized.

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  • 47. 

    NORAC – 10th Edition – Definitions   Speeds:  LIMITED SPEED: For passenger trains, not exceeding _____ MpH; for freights trains, not exceeding _____ MpH.

    • 60, 55

    • 50, 45

    • 45, 40

    • 40, 30

    Correct Answer
    A. 45, 40
    Explanation
    The correct answer is 45 mph for passenger trains and 40 mph for freight trains. The term "limited speed" refers to the maximum speed allowed for trains. In this case, passenger trains are not allowed to exceed 45 mph, while freight trains are not allowed to exceed 40 mph. These speeds are set to ensure safe and efficient operation of the trains.

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  • 48. 

    NORAC – 10th Edition – Definitions   Speeds:  MEDIUM SPEED:

    • Not exceeding 30 MPH

    • Not exceeding 35 MPH

    • Not exceeding 40 MPH

    • Not exceeding 45 MPH

    Correct Answer
    A. Not exceeding 30 MPH
    Explanation
    The correct answer is "Not exceeding 30 MPH" because in the NORAC 10th Edition Definitions, "Medium Speed" is defined as not exceeding 30 MPH.

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  • 49. 

    NORAC – 10th Edition – Definitions   Speeds:  SLOW SPEED:

    • Not exceeding 30 MPH

    • Not exceeding 25 MPH

    • Not exceeding 20 MPH

    • Not exceeding 15 MPH

    Correct Answer
    A. Not exceeding 15 MPH
    Explanation
    In the NORAC 10th Edition, the definition of "SLOW SPEED" is provided. According to the definition, "SLOW SPEED" refers to a speed that does not exceed 15 MPH. This means that when traveling at "SLOW SPEED," the maximum speed allowed is 15 miles per hour.

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  • Nov 26, 2012
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