The AI runs the Bursa 5200 train at 80 km/h (in the 100 km/h section, with ATB-EG code 130), and yes, the speed lights in the cab are off.
The speedometer in the cab doesn't go above 80, so the AI won't run it any faster then that.
On the Panbos line, the train recieves 80 from the ATB-EG (on sections where that is the max speed), and displays it in the cab.