The restriction of the AspectAny valid visual indication of a Signal as displayed to the driver. of a SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed., to ensure that the driver can
comply with the Turnout SpeedThe speed permitted through the Facing Points when Set for the Diverging Route., or to control the speed of a train for a
Warning
Call-OnA Route that is provided to permit a train movement into a section known to be Occupied., Shunt or POSAA Signal Aspect for use during lineside signalling failures to instruct the driver to enter a Signal Section and proceed at such a speed that the train can be s... class routeThe path along a section of track between one Signal and the next, along which an authorised movement is to be made.. See also Temporary Approach
Control.