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Network Rail have announced that some time in April they are going to release a whole hunk of realtime and other info, from TRUST and other sources, to the public - including which signalling block any given train is in, and what the relationship between a given block is to real world geographic...

The map now includes service headcode I don't know if there is a static mapping from headcode to train route, or if the code for a given route may be different from day to day.

I happened to be at KGX at 10:00 this morning when it had just arrived. It would appear to be one of these - apparently the one on the left, though not certain: http://www.flickr.com/photos/22415346@N06/6328686352/in/photostream

Speed should be fixed now (again) I can query the system for its ID, and use that to choose the conversion factor, but it appears that every so often the system ID changes, and sometimes the new system uses different units...

pretty sure it's still using knots as the moment...will keep an eye on it

Well, the train is now parked in waverly, and almost certainly not moving. The data feed is giving me: {"time":"1320165626.0", "latitude":"55.9528", "longitude":"-3.1864", "altitude":"64.7", "speed":"16.1", "cmg":"271.9", "satellites":"1" } Now admittedly 1 satellite is no use to...

It looks like they swapped out the onboard kit for another unit - and hence the old "what units" problem re-arose. All fixed now :-)

Hmmm....I thought I had fixed the speed problem. Only the "off-train" system reports in knots, the onboards all seem to use m/s - so I put some code in which did a check for the ID of the system being interrogated. Of course, if this ID isn't unique, then there could still be a problem :-)...

Yes - apologies. It would seem EC have blocked access :( It should still work whilst onboard the train however Ben

Oh dear if I can't fix it this evening, then I'll post a link to a more basic site that will certainly work. I'll get there in the end. I think the change that caused problems was the addition of streetview. I could flippantly say "don't use IE" - which is a good fix in many ways, but I'd much...

I've developed the site on a linux box - I'm afraid I'm a windows free zone at the moment. I have managed to run it up in IE7 - there were some script errors, though nothing very important as far as I could see. Either way, they should now be gone. I'll keep an eye on it. However, in IE there...

Yes.... unfortunately, given the (perhaps sad) fact that there is no google streetview for railways, all it can do is find the nearest streetview street, and try to point towards where the train actually is :-) If this were a coach service, then it would be a lot more useful! Ben

Altitude measurements from GPS are often far more variable than position. A more accurate measure of altitude might be via barometric pressure - but this may not be a feature of the kit. It might be interesting to correlate the number of satellites on which a fix has been obtained (available...

Ah yes - sorry about that. That https mismatch /may/ have been why my original fix was failing...

Doh! I thought I had that one sorted The problem is that onbboard and offboard speeds are reported using different units, and working out which conversion to use is tricky. If you are still on the train, and can post a copy of what you see at this url...

Does the wifi homepage on the virgin train have any kind of map already? If it does it would almost certainly be possible to modify my code to make use of it...?

This is a tricky one to fix - but I know the cause. If you are on a train, then the onboard device reports your position in m/s If you are not, then the data is returned in knots - and the conversions are obviously different to mph I think I have put in a programmatic fix - though it will...

Actually it takes its data from the same source as the NRE website (using their published API) - which is currently showing that service as not stopping at Stevenage either, so it may be wrong, but at least it is as wrong as the NRE public website :D OxtedL - if you have a list of stations...

Cheers OxtedL - I've swapped the old overlay for your new one. It looks a lot smoother :-)

@OxtedL: If you do have a KML file to hand, than could be useful. I do have a KML overlay on the map, generated by EC themselves, but it's not great to be honest Cheers, Ben