Debugmode – Test mode, allows for more accurate testing. At the top of the screen (red text) the driven vehicle parameters are shown. In this mode, all failures are disabled (ie. derailing), CA / DSD (Driver Safety Device, not acknowledging "SHP") does not cause emergency braking. In debugmode, opposite to the normal mode, certain keys have the following functions:
Turning on the AI (Shift + q) does not lock the keyboard. Also, the inside cab boundaries are gone.
This mode should normally NOT be used in the simulator.