What action is required when arriving first at Dooley siding with track authority to meet a train?

When arriving first at Dooley siding with track authority to meet a train, it is necessary to line the switch for the opposing move into the siding. This action ensures that the opposing train can access the siding, thereby facilitating the safe and efficient passage of both trains. Properly lining the switch is a crucial safety measure as it allows the train that is scheduled to arrive second to maneuver into the siding, thus maintaining compliance with the operational protocols in place for meeting trains.

The requirement to line the switch ensures that the correct track path is set for the opposing train, which is an essential aspect of maintaining safety standards and smooth operations within the railroad system. Not lining the switch correctly could lead to potentially dangerous situations, such as a train being directed onto the wrong track or encountering another train unexpectedly.

Other actions, such as waiting for the opposing train, proceeding without stopping, or notifying the dispatcher, might not be sufficient or appropriate in this context since they do not directly facilitate the meeting process. Lining the switch is the definitive action that must be undertaken to uphold safety and operational efficiency when meeting trains at a siding.