Umm -- this must be for TANE, or you are using an HUD in 12 that I don't have. Surveyor, yes. Driver, No.
I've tried the available direction change commands in 09 and 12 and some of them work for a while. After the first station stop, however, train direction reverts to the original and will no longer change at all. If you watch in map view, you'll see the driver flip to the other end of the train and then pop back.
Sorry.
:B~(