What is necessary for a train to operate in DCS territory?

To operate a train in DCS (Direct Control System) territory, a Form D line 2 is necessary. This requirement arises because Form D line 2 specifically grants authority for the train to operate under the conditions present in DCS territory. In this context, it serves as a communication tool that provides information about the limits of authority and any restrictions or conditions that may apply while in DCS territory.

DCS refers to an area where signals and communications are controlled directly through dispatcher instructions rather than conventional signal indications. Therefore, using Form D line 2 ensures that all operational parameters are strictly adhered to and that safety protocols are followed effectively.