I resumed a saved Scenario where the train was stopped on the 1.4% upgrade in the siding at some unpronounceable name (Illewatchamacallit......something like that).
Speed limit is 20 mph.
Braking realism set on "Hard".
Light changed to Clear.
I put the throttle into notch 1 and released the brakes.
The locomotive moved, the train stretched out and before I could do anything, the speed had exceeded 20 mph and I was getting penalty points!!!
All in Notch 1 and uphill with a long, heavy, train!!!
Yep....this is really realistic!