What action must be taken when stopped at a manual interlocking signal displaying a STOP indication?

What action must be taken when stopped at a manual interlocking signal displaying a STOP indication?

• A. Proceed slowly until seeing another signal.
• B. A crew member must immediately contact the control operator.
• C. Wait for further orders from the yard office.
• D. Release the brakes and prepare to depart.

Answer: (B)

When a train is stopped at a manual interlocking signal that displays a STOP indication, the appropriate action is to ensure communication with the control operator. This is critical because the STOP indication signifies that the train cannot proceed without explicit permission. By contacting the control operator, the crew can clarify the situation, receive instructions, and ensure the safe continuation of operations. This step is vital in maintaining safety protocols and ensuring that all trains are operating in a coordinated manner. It also helps prevent accidents that may occur due to miscommunication or misunderstanding of the signal indications. The other actions may lead to confusion or safety risks, as they do not prioritize verifying instructions from the control operator, which is essential when a STOP signal is encountered.

When a train is stopped at a manual interlocking signal that displays a STOP indication, the appropriate action is to ensure communication with the control operator. This is critical because the STOP indication signifies that the train cannot proceed without explicit permission. By contacting the control operator, the crew can clarify the situation, receive instructions, and ensure the safe continuation of operations.

This step is vital in maintaining safety protocols and ensuring that all trains are operating in a coordinated manner. It also helps prevent accidents that may occur due to miscommunication or misunderstanding of the signal indications. The other actions may lead to confusion or safety risks, as they do not prioritize verifying instructions from the control operator, which is essential when a STOP signal is encountered.