The disengaging of a SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. after it has been used by a train, to prevent the
SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. from subsequently showing a Proceed AspectAny Signal Aspect which permits the driver to pass the Signal. until the RouteThe path along a section of track between one Signal and the next, along which an authorised movement is to be made. has
been cancelled and again Set.