Hi Steve.
I'm surprised that speed trips weren't fitted. I've probably mentioned it before, but following the Canon St collision (Linky here...
Canon St collision) it was made mandatory for all terminal platforms in the UK to have mini grids.
But it's not perfect. They're set at ~10 MPH, so if you roll in at 9 you can still wack the stops unimpeded. Also some platforms have rising gradients, like platform 9 at Kings Cross, where it's sometimes necessary to take power after you've passed over the mini grids if you've rubbed a bit too much off on the approach.
I guess no safety system is perfect, and it will be interesting to see how the forthcoming ERTMS (in cab signalling) deals with the speed element of approaching the stops.
Cheers, BW.