9 Downloadable software for controlling railroad systems, namely, downloadable software for computer aided dispatching, positive train control, railyard automation, and remote condition monitoring; Computer servers loaded with recorded software for controlling railroad systems, namely, software for computer aided dispatching, positive train control, railyard automation, and remote condition monitoring; Railway control systems for railways and rail yards for aiding, tracking, and controlling movement of railcars in rail yards and on railways comprising track switches, track switch machines, electronic track circuits, electric sensors, recorded software for computer aided dispatching, positive train control, railyard automation, and remote condition monitoring, computers, recorded graphical user interface software, data communication computer networking hardware and transmitters, receivers of electronic signals, and railway monitoring equipment, being radio transmitters, receivers, and controllers for monitoring and controlling railways