It’s likely some utilitarian reason, i.e. sacrifice the riders on the train for the good of all the other schedules.

This is the one benefit of living in an overly-litigious country that has news media which can pick up on a story like this. They’d rather have the masses suffer to avoid the legal fees and bad press, so instead of sacrificing a train, they’d make everyone’s lives worse overall.

I’m not arguing for utilitarianism, though. Ir allows dictators to thrive.