A SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. that is provided to optimise Headways and/or to provide earlier
clearance of junctions on the Approach ToIn relation to equipment on or alongside the track, positioned such that a train passes the point before reaching another defined item of equipment. See also Re... stations. It may or may not form
part of the normal Aspect SequenceThe order of the displayed Aspects to give the driver information about the aspect of the Signal or Signals ahead..