This would make all trains in the game feel realistic and fun as well as provide a unique level of immersion. Rails Sings are when the rails create a ringing sound when a train approaches.
Presumably they mean the ringing sound you sometimes get on long welded rail if stood lineside and a train approaches.
Flange squeal? OP, what route are you referring to? This is present on some like ECML, but if not on all I guess it’d be good for consistency
