A switch located in 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 by means of which the signalling block
circuits to the SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. More Boxes on either side may be connected together,
enabling the 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 in which the switch has been so operated to close.