What critical operational difference existed between the 1914 Cleveland electric signal and a modern automated signal?

Answer

It was controlled remotely by a human operator from a police station.

The Cleveland installation, while electric, was not automated in the modern sense; it required a human operator at a police station to actively manage the light cycles for that specific intersection.

What critical operational difference existed between the 1914 Cleveland electric signal and a modern automated signal?
inventionHistoryautomationtransporttraffic light