I suspect the increased numbers of train accidents (if this is statistically correct) have a lot of causes, especially since the cases you cite occurred in different countries and even different continents.

Yes, the multiple cause thing is my answer. In the UK a change in the ownership/control structure through a process of privatisation led to a catastrophic fall in safety concerns. Numerous small accidents were bracketed by a series of high profile crashes, almost all due to collapsing infrastructure, finally forced the companies to act.

The public still want a return to public control due to widespread disillusion with the ineffectiveness of the privatised railway. Sadly the govt is too frightened of the Daily Mail and the Murdoch papers to do anything that might be mistaken for effective management of the railways.

I cannot comment on problems in other countries.

keep to the Fen Causeway