Signal switch activating and deactivating

About

around the 32-38 second mark the leaving train activates the switch (switch rises), and at the 45-end of video when train is out of sight the switch gets deactivated letting the next train to enter the station(switch rests). This video is taken at 57st 7AV Q,R,N Subway station.

Human-made No record of this work says a model made it. What this means.

Archive

Wikimedia Commons, in Wikimedia Commons

Licence or status

CC0, as the Wikimedia Commons states it.

Rights statement

Creative Commons Zero, Public Domain Dedication

Credit

Doorknob747

Who can watch

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