Ok so when you do a service, the speed limit is very late. You pass a speed limit pannel , you need to pass some meters before the speed limit give you a correct measure. For the Bakerloo Line it's very complicated. I don't know where exactly it was happened but after Paddington it tell you to go at 40 or 45 mp/h during one second. Only ONE second ( or maybe an half second ). After that you can ride at 30 mp/h. It is just amazing how the speed limit isn't precise. This bug really need to be fix, even if the speed limit will be completely new for us.