Kentish RYS
Member
I think you would not quite be in that situation (also Light Railways Act isn't a thing many extensions in more recent years are on Transport and Works Act Orders and Light Railways could be over 25mph and heavily engineered anyway-West Highland Line anyone?).If you want to run over 25mph passenger services, then it is not just the standard of the track that would need to be considered. It is likely that the railway would cease to be classified as a light railway. In which case, it would have to meet full mainline standards. So ALL trains using the railway would likely have to be fitted with AWS and TPWS, meet modern crash worthy standards, etc. Having a train of old wooden carriages run into the path of a modern dmu running at 50 mph would not be good. Doors to be fitted with central door locking, platforms to have yellow lines and tactile paving, etc etc.
I would hope that the ORR might be prepared to grant some exemptions, but I suspect their starting point would be that the railway has to meet all the standards. I suspect that to continue running heritage trains on the line you would end up with something like the requirements for running steam specials on the mainline.
Having faster trains the faster trains would probably want train protection (so TPWS) and probably a warning system (so AWS). Though you could go for something like LU Trainstops or something novel but the rolling stock wouldn't be fitted/would need a new bit maintained so I think that is not likely, it is TPWS & AWS or ETCS if you have a fleet fitted (but this would be more complicated to add as a level 1 overlay). With a way of preventing the fast trains from colliding with heritage ones I think you could probably keep heritage ones as is. Maybe want a portable radio on train that don't have them for GSM-R Railway Emergency Call Equivalents. If a heritage railway specific one (like the Ravenglass and Eskdale Railway has for Example) the mianline would need a portable radio anyway. Radio equipment would be an extra expense in this case
Anyway this is getting quite fanciful and would depend a bit on how the railways, TOCs and regulators involved wanted to arrange things.