The Belgian railways have a similar thing, which is on an official site: http://www.railtime.be/website/traffic-trains
There's not much traffic now since it's midnight. Also, the banner on top is completely Javascript.
Very nice! There is not much information on the website, do they use the regular schedule to calculate the train positions or something more sophisticated (GPS positions broadcasted from the train)?
They calculate the positions. Though recently the railway implemented a system in their trains that seems to use GPS to inform passengers on realtime arrival times. So perhaps in the future they will make GPS data available in their API.
The railway company is kinda behind on how the world (of data) works, and they have for a long time considered this kind of information as exclusive information that nobody else should be able to access. Despite being government owned..
It's indeed precalculated. Right now the official site of the train service lists blocking construction work on some routes, no train is riding there. On the map though they are still on schedule. Nevertheless a nice piece of work, but not really "live".
> The railway company is kinda behind on how the world (of data) works, and they have for a long time considered this kind of information as exclusive information that nobody else should be able to access. Despite being government owned..
The same thing happened in Belgium. A student made a mobile website for accessing rail times, was ignored by the rail company for 18 months, then got threatened into shutting down when the rail company finally made their own application (which naturally doesn't work as well). Luckily a few government ministers made the rail company see the light, despite their protestations.
The data is based of a scraped/entered train schedule from 2009, and hasn't been updated since.
Essentially, the data is always playing back the regular schedule, but is offset by any delays (which can now be obtained by API, earlier by scraping the railway's mobile site). Other than that they use the average acceleration and braking performance of trains, and the max speed at route points.
The project apparently never was finished: this works but isn't up to date. A very similar site and likely by the same maker won a "Who is better than Google" prize a few years back.
It's funny this link pops up now: the Dutch Railways announced an API on March 31st.
It is calculated based on train schedules from what I can tell. I just got off the train and there is an outage between Almere and Lelystad (in the middle of the map) because of maintenance, but I can see active trains on the map. The entire service is run by buses this weekend.
