Interested to know where your talking about?
Kidbrooke Tunnel. No changes to the track, layout or otherwise. When it got resignalleded and controlled to the Great Beast TBROC the only change was the CA on UP. The previous 60mph PSR change in the tunnel has been removed and the 20 is now all the way out (on the down) !$£%$"%$%^£$ !!! +1 into Kidbrooke !
Charlton resignalling has had the PSR boards moved to the signal posts; which alters the speeds somewhat. They tidied up Greenwich which was nice; but on a technicality, the 60, albeit stoopid, was removed. The speed into College Tunnel has been reduced and now I'm so far under linespeed, I'm late into Greenwich all the time. Again, no real changes to anything just a speed reduction for no 'visible' reason.
I've noticed that the Hither Green resignalling is also pushing some of the PSR boards to the Signal posts (is this the future of PSR placement ?)
Cannon st as an example was reduced to 15 when it was recontrolled. Most of that was because of the really short overlaps are non compliant now, and resignalling it would destroy capacity with modern standards!
When checked *apparently* most trains were only doing 15 when it was 20 anyway. Whether that means trains now don10 instead I don’t know!
I understand the need to comply with new standards. Cannon has always been a slow crawl into London Bridge. Signal sighting is a drama lama and its highly congested so your always checked in both directions.
Speed wise, I'm not sure where I stand. As per the Charlton resignalling, it was good to finally get rid of some of those PSRs that were impossible to achieve but on the flip side when its reduced you are limited. I think I'd like to have PSRs that I can't achieve but ones I can push where I can and not worry about my speed.
Cannon could be 30 all the way out and you would still not achieve it and drive to whatever you were signalled. Getting Greens out (LOLOLOLOL) is a drag at 15mph and your almost touching London Bridge so the 20 PSR change is now kinda pointless. You can get 20 without thinking and previously your only limit was the signals. I'd rather have 20 all the way and drive accordingly.
Orpington (Ashford box) had another reduction. Country end crossover dropped from 60 to 50. The entire crossover was relaid and it much smoother and I think they also smoothed the curve out a touch. I can't understand why they dropped it to 50. Granted going over it at 60 was a touch scary.
If the infrastructure can take it, why can't we just have the fastest PSR ? (Yes Mr B Rick, I understand the 80 reasons....)