Addendum..What I Think They Meant..

Middle in the platform, a long distance from the previous post about the sign about the flashing light is a kiosk that sells what mid platform kiosks in subway stations sell, sugar, reading materials and more sugar in liquid form.  Most likely the kiosk, if being held up, has a button to push which trips the light to flash… but hey, how about a direct call to a nearby police station.  Certainly in this day and age we can arrange that?