I think they would do well to go back to the drawing board.
I only looked at the East Midlands and there are so many incorrect routings its not true. As someone else says it just seems to be guessing which way trains run.
If it ever had the bugs sorted it may be a useful train planning tool but as it stands it totally useless.
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On the whole, no - it's not publically available. I get the impression those are feeds sent to the station directly from the relevant signalling centre.
However, there are some diagrams available on OpenTrainTimes where they are able to emulate much the same information, based on the Open Data reporting from train describers. Not all areas are available, and some don't report things like signal aspects, but this is dependent upon what the TD itself is capable of. These diagrams can be found here:
http://www.opentraintimes.com/maps
With all respect to OTT a much better implementation of the available data is available on the RailCam (
http://railcam.org.uk/) website. A donation is required to access it but it covers :-
ECML complete (as far as Edinburgh) and branches
WCML complete (to Glasgow) and branches
MML complete and branches
North Manchester
Exeter area to Liskeard and branches
Glasgow and Edinburgh suburban network
West Yorkshire (Leeds, Knottingley areas) and branches
Barking area
It incorporates a look-up where the describer data can be clicked on and the train identified via a link to Real Time Trains (the OTT link doesn't work)
A sample of what it looks like is available underneath the video feed on the Dawlish web cam site :-http://www.dawlishbeach.com/live/
The OTT maps are good but seem to cover more the London area and south thereof than the rest of the country and they are not clickable at the moment. The advantage that the OTT maps have is that SOME show signal aspects
Correction: It seems that some OTT maps are clickable - apologies.
Both systems recently seem to be having difficulties with the data feed. I notice that the Railcam map of the Doncaster area (which I've just loaded), for instance is not updating but other areas seem OK. I'm aware that the data feed has not been too reliable of late so I guess its outside of their control