When yard limits fall within CTC territory, how is movement authorized on the main track?

The correct approach for authorizing movement on the main track within yard limits that fall under CTC (Centralized Traffic Control) territory is through the control operator. This is because the control operator has oversight and authority concerning train movements in CTC territory, ensuring the safe and efficient movement of trains. They can provide the necessary instructions or signals, which are crucial for maintaining safety protocols in both yard and main track operations.

In this context, movement cannot be left solely to the command of the train operator, as this could lead to miscommunication or unsafe situations. While local signal arrangements are essential for guiding movements, they typically operate under the overarching directives of the control operator. The dispatcher also plays a critical role in train operations but primarily focuses on overall traffic management rather than specific authorization within yard limits in real-time. Thus, the control operator's authority is vital for movement authorization on the main track in this scenario.