Anyone know what key acknowledges tass? Q doesn't seem to do anything, I have to press the button in the cab. Not ideal on external veiw.
Not sure why it's not working for you, but Q works here. When I press Q, the game tells me that it's pressing the AWS reset, alarm acknowledge for the tilt alarms, intervention reset for TASS as well as the vigilance pedal. I'd recommend talking a look at the control guide in the pause menu and finding what it says speed supervision reset is bound to (it's near the bottom of the list under loco).
Yeah I also get the on screen acknowledgement for all the above, tass included. Its the same when I set up the train. All the alarms sound, I press Q and everything stops except tass, until I press the button in the cab. I will check my key bindings. Thanks.