An Overlap that is shorter than the minimum permitted length of a Full
Overlap, where the permitted approach speed is below a specified level
which still allows an unrestricted 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... More a SignalA visual display device which conveys instructions or provides prior warning of instructions regarding the driver’s authority to proceed. More at dangerAn indication given by a Signal to stop. More.