To stop the video and track in real time, click on "LIVE" in the upper right.What this shows: each black arrow is a long distance train en-route. Clicking on it shows the route and on the right a window opens displaying the stations. The arrows surrounded by colored circles are trains that are late. The darker the circle, the later it is. Clicking on one of those also gives the reason for delay at top of the window. Using the (Suche) window, you can also choose the type of trains you want displayed and also select stations.
Site in German only... Click image to start watching.