On PS4 ( i don't know for others ) when a DB BR 442 Talent 2 IA pass in front of the player with a high speed, it doesn't make noise. You can see that on this video :
I already reported this a long time ago but DTG hasn't responded or done anything. I'm pretty sure that the reason this train goes silent at that section of track is because it's going over it's maximum speed of 160 km/h, where it has no programmed noise. Hope DTG fixes this soon.
