FREE GCOR Railroad Operations Questions and Answers
What is a dual-control switch?
Explanation:
A dual control switch is a power-operated switch, moveable point frog, or derail that can also be operated by hand. This means that it can be controlled both automatically and manually, providing flexibility in its operation.
What is a main track?
Explanation:
A main track refers to a track that extends through yards and between stations. It is important to note that this track should not be occupied without proper authority or protection. This means that trains or any other vehicles should not enter or use the main track without the necessary permission or safety measures in place.
What are signal appliances that are interconnected so that each of their movements follows the other in a proper sequence?
Explanation:
Interlocking is the correct answer because it refers to a system of signal appliances that are interconnected in such a way that their movements follow each other in a proper sequence. This system ensures the safe and efficient movement of trains by preventing conflicting movements and maintaining a proper flow of traffic.
An electrically controlled lock that restricts the use of a hand-operated switch or derail is a:
Explanation:
An electric switch lock is a type of lock that is controlled by electricity and is used to restrict the use of a hand-operated switch or derail. This means that the switch or derail can only be operated when the electric switch lock is unlocked or disengaged. The electric switch lock adds an extra layer of security and control to the operation of the switch or derail, ensuring that it can only be used when authorized.
A remotely controlled block system that uses block signal indications to authorize train movements is:
Explanation:
Centralized traffic control (CTC) is a remotely controlled block system that uses block signal indications to authorize train movements. In CTC, the movement of trains is controlled from a central location, where the dispatcher can monitor and control the signals and switches. The block signal indications provide information to the train operators about the status of the track ahead, allowing them to proceed safely. CTC is an advanced system that enhances efficiency and safety in train operations by providing centralized control and real-time monitoring of train movements.
When must the conductor inform the engineer of a restriction?
Explanation:
The conductor must inform the engineer of a restriction after the train passes the last station, but at least 2 miles from the restriction. This ensures that the engineer has enough time to prepare for the restriction and adjust the train's speed accordingly. Informing the engineer earlier than 2 miles from the restriction may not provide enough time for the necessary adjustments to be made.
What is a crossover?
Explanation:
A crossover refers to a combination of two switches that connect two adjacent tracks. This allows trains to move from one track to another, typically in opposite directions. By using the crossover, trains can change tracks without having to reverse or make a large detour. This helps to improve efficiency and flexibility in the railway system.
Who is the employee assigned to operate a CTC or interlocking control machine?
Explanation:
A control operator is an employee assigned to operate a CTC or interlocking control machine. They are responsible for controlling and monitoring the movement of trains, ensuring the safe and efficient operation of the railway system. They have the authority to control signals, switches, and other equipment to maintain the flow of train traffic. Control operators play a crucial role in maintaining the safety and smooth functioning of the railway network.
The location of absolute signals controlled by a control operator is a:
Explanation:
The location of absolute signals controlled by a control operator is referred to as a control point. This is the designated area where the control operator is stationed to manage and control the absolute signals. It serves as a central point from where the control operator can monitor and regulate the signals to ensure smooth and safe traffic flow.
A series of consecutive blocks governed by block signals where the signals are activated by a train or by certain conditions that affect the block. This system is called:
Explanation:
An automatic block signal system (ABS) is a system where block signals are activated by a train or certain conditions that affect the block. In this system, consecutive blocks are governed by block signals, ensuring safe and efficient train operations. Centralized traffic control (CTC) is a different system where a centralized control center manages train movements. Track warrant control (TWC) is a system where train movements are authorized by track warrants. Absolute block signal system (ABSS) is a term used to describe a system where each block is protected by a fixed signal and trains must receive permission to enter the block. However, none of these systems fully match the given description except for the automatic block signal system (ABS).
Crossings that intersect at the same level are called:
Explanation:
Crossings that intersect at the same level are called "crossings at grade". This term is commonly used in transportation and refers to intersections where two or more roads or railroad tracks cross each other at the same elevation. These crossings can be dangerous as they often require vehicles or pedestrians to cross the path of oncoming traffic. Therefore, it is important to exercise caution and follow traffic signals and signs when approaching crossings at grade.