It is my understanding that the EMD F125 loco will not have in-cab safety systems (other than the alerter) because of the system's complexity. How exactly are we made aware of stop signals and the like? I've had a couple SPAD already and I'm not sure what to do....
Best way is to follow the signals on the HUD display. The signaling system is all messed up on the route because of how the dispatching works. This was an issue on TSW 2020 with CalTrain and wasn't really addressed. The yellow and red signals it gives you are almost always never correct. Unless you still have a yellow or red signal leaving a station. Then it would be an indication of meeting another train.