When presented with a RED OVER RED OVER YELLOW signal, what action should be taken?

When encountering a RED OVER RED OVER YELLOW signal, the appropriate action is to call the Remote Control Center (RCCC) and wait for further instructions. This signal indicates that the situation requires additional communication and guidance from the RCCC, signaling potentially unsafe conditions that must be clarified before proceeding. The red lights denote that a stop is required until the appropriate response can be determined, and the yellow light signifies caution.

By contacting the RCCC, the operator ensures that safety protocols are followed and any operational updates are addressed before making any further movements. This procedure is critical for maintaining safety in the control of train movements.