signaling(main and forward signals)regulating train traffic,reversing movement indicators,Railway Signals, Signaling Devices:Stationary, Portable and Vehicle Vessel Signal Displays.Stationary flags are always capable of expressing a single command or different commands at different times.Equipment for track crossings, track crossings:track level crossings, track crossings, road crossing bridges, tunnel crossings, between crossing markers and between railroad crossings and road markings, there is one structural link that allows crossing may be present on non-hazard travel or traffic alley.Line Signaling and Interlocking Equipment:Compliance with Requirements for Signaling to Run on Trains at Open Lines between Main Stations and Trains.Trainborne signaling equipment:a signaling device at an exit of a station(junction, junction)and a signaling device not provided after a station, or a signaling device allowing passage between successive signaling signals; no structural dependency is required for the signal to appear