Under what condition can a control point in local control be used for OTS protection in CTC territory?

A control point in local control can be used for OTS (Ongoing Temporary Signal) protection in CTC (Centralized Traffic Control) territory with permission from the control operator. This is necessary because the safe and efficient operation of trains in CTC territory relies on coordination with the control operator, who maintains overall responsibility for managing train movements and ensuring safety. By requiring permission, it ensures that all safety protocols are adhered to and that the control operator is aware of the situation, allowing for proper management of train traffic and protection of workers in the area.

Using local control for OTS protection without this permission could lead to safety risks, such as miscommunication or conflicting train movements, which might jeopardize both train operations and worker safety. Therefore, the stipulation of needing the control operator's approval is crucial in maintaining operational integrity within the railway system.