If talking about station sounds... it's interesting that a week before the topic was raised, I had been re-listening some parodies like "What if
Trenitalia annoucements were said in local dialects?"
That's a funny but niche stuff, thus I dunno if anyone would be interested in making this as mod (and if it will make a good effect with a full announcement). If yes, here they are:
https://www.dailymotion.com/video/x2xuisv - marchigiano dialects (mainly
anconetano and partly
maceratese)
https://www.dailymotion.com/video/x2wz60u - abruzzese dialects (as far as I get, here it's
pescarese and couple of other ones which I cannot identify)
(Years ago there were also some more, e. g. for Toscana and Emilia-Romagna, but now I can't find those.)
For non-Italian speaking people, generally there are the things like "The train arriving from Sulmona hitted a mountain, thus its course is impossible. Passengers are invited to come another day." =)
Also, if someone is gonna put this into a mod, I surely can prepare the logo.