I had heard a radio report yesterday ( NPR) that the USA's Federal Railroad Admninistration FRA does not keep ANY records of train derailments or analysis of what caused each derailment. If this is a true summary of what that organization does not accomplish, then it is an incredible waste of money and a lost opportunity to improve operations, and a prime reason for the frequent derailments in the USA railroad system.In other words, our 175 yr old rail network is condemned to poor availability and frequent environmental catastrophes due to simple stupidity.The claimed reason for their forced stupidity is that the onwers of the rail system do not want to invest in the improvements needed to minimize derailments, and so the political pressure on the FRA is " to see no evil, hear no evil, say no evil".
There is the old saying " if it can be measured, it can be improved". More to the point, the use of modern statistical quality control measures can find , and fix the top 3 reasons for derailments if they were to indeed keep records. At a minimum, one should compare the frequency of US railroad derailments on a normalized basis with other countries, such as derailments per ton*mile of freight shipment . Perhaps the insurance industry could provide the data that the FRA refuses to keep.
"...when logic, and proportion, have fallen, sloppy dead..." Grace Slick