Trains through non-stop stations / Whistle boards

[Dave]

I've been thinking about this and just want to throw it out to the world (mods: I'll also be placing a suggestion in OTTD, don't shout for cross-posting).

Assuming a train knows when it's entering a station (I don't actually know if that's the case), and assuming it knows it's not stopping, could something be done either in a grf or the game system to make the train sound it's horn/whistle as it enters the station? It's not compulsory anymore, but it would be a nice addition.

Also the possibility of building a whistle board (probably like a station, effectively) that causes the train to sound it's whistle or horn when required.

Both pretty empty ideas with very little benefit other than realism, but I thought I'd throw them out there to see if it was easy enough to implement.

[Toni Babelony]

That's a pretty awesome idea, kind Sir!

[Railwaymodeler]

A whistle Post (As called in the USA) could maybe be a sort of waypoint station?

For their size, would be a bit hard to see, I think.