I cannot speak for other countries; but in Denmark, they are always crystal clear when the train has hit someone (»personpåkørsel« in Danish); and even when they suspect they might have hit someone; so when I say "technical problems", I mean technical problems. Besides, I am not sure I see the point of hiding when they've hit someone?

At least the last few times I had those they were announced as "accident with injuries along the tracks" or "People on the track".

It's usually reported (briefly) in the local news.

Sometimes the train conductor will admit it or you can tell because the reason they give is different each time.

I find it stupid, it is what it is, just say it. This double speak serves no purpose.