What is a Controlled Signal?

Study for the US Railroad General Code of Operating Rules Test. Review multiple choice questions with detailed explanations. Enhance your knowledge and prepare for your exam!

A controlled signal is defined as an absolute signal that is operated and managed by a control operator. This type of signal conveys important information to train crews regarding their movement, specifically regarding track occupancy or the need to stop. The control operator has the authority and responsibility for ensuring that signals are set and displayed correctly, allowing for safe and efficient train operations.

In contrast, signals categorized in other options, such as those servicing only freight trains, are not part of the controlled signal definition. Emergency signals, while critical for safety, serve a different purpose and are not limited to control operator management. Similarly, temporary signals might be used for maintenance work but do not fit the definition of a controlled signal, which involves regular operations managed by an operator. Hence, the definition highlights the significance of the control operator in maintaining safety and order within the railway system.

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