I am not too sure - perhaps someone REALLY familiar with German railroading can help me out - but it seems to me that the BR440 included with the Nürnberg-Regensburg route has the SIFA incorrectly simulated. As far as I am aware, if you press on the switch, the 30-second timer should reset back to zero. However, this is not the case here, the timer does not reset. I can click the switch but no point because the SIFA alert will still appear and THEN and only then will it start counting from zero. So there is no way to reset it without it producing an alert. In other German trains, I could travel without even having a single alert appearing by pressing the SIFA switch often enough.