This is a bit of a newbie question.
I have recently just realised that the speed display on the various HUDs is actually the speed at the end of the train, not the front of the train. The display on the 3D instruments seems to be the true speed at the locomotive, but in a lot of the locos it is very hard to read.
Does anyone know of a way to get the HUDs to show the head end speed, rather than the speed at the rear of the train? With a long 100+ car train it seems that it is not too difficult to get each end of the train moving at different speeds, and the speed at the rear seems to jump up and down a lot with the changes in slack.