Image search results - "1234 market street philadelphia transit downtown control room lights colors dark transportation train trolley bus vehicle transit market frankford broad street line subway"
P1030573.JPGMore of the control board for the subways264 viewsMonitors can see whats happening on station platformsJayayess1190
P1030581.JPGBoard for MFL and BSL260 viewsCan see where all Broad Street and Market Frankford line trains areJayayess1190