Two years to find out why a train derailed!

Stuff reports:

Transport investigators say it’s “too soon” to say what caused a serious train crash on Wellington’s Johnsonville line. …

Speaking on Sunday, Cook described the crash as a “serious incident” but said investigators were still at an early stage and no conclusions had been reached about its cause.

It could take between 12 months and two years to produce a report on the accident, Cook said.

That’s just crazy. Two years to report on why a relatively slow moving train derailed. This is not about why a plane crashed. If they don’t have a very good idea within five days, there is something wrong.