All of the oil tank cars on the 109-car train were  CPC 1232 models.                           Newer.  Tougher.

Apparently not..  The rapid uptick in crude-by-rail accidents are the product of a 40-fold increase in crude-by-rail shipments since 2008.

Reprint from Reuters

http://www.reuters.com/article/2015/02/17/us-usa-train-derailment-csx-idUSKBN0LK1ST20150217