The
Fifth Avenue operator on the Big four line between CD (the Big Four Yard office) and Worthington
towers handled the transition from the single track to the north and
double track to the south. He may of had other responsibilities as
well.
At some point in time, perhaps the 1940's, the switch was automated and
remotely controlled from CD tower. When CD tower was abandoned
(1960's?) the remote control was moved to Olentangy/HV tower.
The
operator was a NYC (Big Four) position.