What action must be taken when a train stops at a signal displaying stop indication in CTC territory?

Prepare for the CPKC Train Dispatcher Trainee Test with interactive flashcards and multiple-choice questions. Each query is complemented by hints and detailed explanations. Equip yourself for the test now!

When a train stops at a signal displaying a stop indication in CTC (Centralized Traffic Control) territory, the most appropriate action is to immediately contact the control operator. This step is essential because the control operator has the authority and information necessary to provide instructions regarding the train's next course of action. Stopping at a signal indicates that the train should not proceed until it has received authorization, and the control operator can clarify the situation, which might include providing further signal indications or addressing any issues related to train movements in that area.

The other options, while they may seem plausible, do not adequately address the protocol that must be followed in this situation. Waiting for the next signal without any communication could lead to safety hazards or conflicts with other trains. Checking onboard systems alone may not provide the complete context needed to make an informed decision, as it lacks the situational awareness provided by real-time communications with the control center. Proceeding without delay is not an option when a stop indication is presented, as it directly contravenes safety protocols designed to prevent accidents.

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