Not sure if anyone else is having this issue, but on the introduction tutorials when I’m asked to switch to driver camera with triangle nothing happens. I can’t seem to go any further.
It's been a long while since I've done the tutorials, but what that is referring to is the external camera view. There are two settings under the classic control setting. Default is driver mode where you can drive the train, but not move the camera. Free mode allows free movement of the camera (you do have to remain a certain distance to the train) but you cannot control the train. Pressing triangle toggles between the camera modes. When the game tells you to return to driver camera, I think it is assuming you are in free camera mode and exiting early make cause your issue.
If you try it now, it doesn't work. This is a new issue that came about after updating the game. Toggling to driver mode isn't possible no matter how long you leave it. It works from a driver's seat but you can't sit on those in the introductions.