A Signal BoxThe building in which the Signaller(s) is/are situated together with the control and indication system for the signalling. See also Signalling Centre. More, including a Control CentreA Signal Box covering a large area, usually incorporating other operational functions. More, Gate BoxA control point provided for the supervision of one or more Level Crossings which is not controlled directly by a Signal Box. A Gate Box is not a Block Post. More or Ground FrameA control point containing levers or switches to permit the local operation of Points in Running Lines, Sidings and, where provided, the associated Signals. Thi... More.