Railway diagram is a kind of 2D graph which represents train operations. This system allows you to see departure display and 3D view with some trains, which are executed with regards to a railway diagram on a line you selected. It's possible to specify a route for each train, which may cause a collision between trains. When a collision occurs, your simulation pauses. Some simulation data are already prepared. You can also input a timetable at a station, select a track diagram, and run a simulation. Enjoy your simulation, feeling as if you were at a station, finding a route selections for no collision, and so on! (Note)This application is based on a technology which integrates Web Browser with Android APP. We tested Android 4.4, but any older OS may not accept that technology.