I know the game can't be customized for every single person, but I'm just throwing this out there as something I feel would improve the enjoyment of TSW for many. I find driving without the speedometer HUD in the bottom right screen makes the sim much more immersive, but often have to open it in order to check the current speed limit, most often when trying to see when the end of the train is past a speed increase sign. I think it would be great if the current speed limit could be displayed at the top right screen right under the upcoming speed change notification.
I actually do agree with this, but to be fair learning the route will probably be the best option anyway. Once you drive the units enough you get a feel for their length. But yes it would be a nice feature.