A control applied to a SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. More which replaces it to its most restrictive AspectAny valid visual indication of a Signal as displayed to the driver. More
immediately after the front of the train has passed that SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. More. See also
Last Wheel ReplacementA control applied to a Signal which replaces it to its most restrictive Aspect only after the whole train has passed that Signal. See also First Wheel Replaceme... More.