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NYC Subway Bowling Green Tower Interlocking Panel in Auto Mode - https://
"The NYC Subway Bowling Green satellite tower was installed in 1956 replacing an earlier electro-mechanical interlocking machine with an all-relay plant controlled by a US&S Style C unit lever machine. This machine controlled the local crossovers as well as both loops through the old South Ferry station. The tower was put under remote control to the new Rail Control Center in 2009 and is now only staffed during non-standard service plans or disruptions.
Watch as #(4)/(5) trains arrive and depart the station and how it is represented on the model board. The upper row of unit levers represent switches, all in the normal position, the second row are controlled signals."
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