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[quote user="CNW 6000"] TSB investigator Donald Ross said Canada's TSB has gone on record saying that it would like to see improvements on these tankers, though he acknowledged it's too early to say whether a different or modified tanker would have avoided this weekend's tragedy. The DOT-111 is a staple of the American freight rail fleet. But its flaws have been noted as far back as a 1991 safety study. Among other things, its steel shell is too thin to resist puncture in accidents, which almost guarantees the car will tear open in an accident, potentially spilling cargo that could catch fire, explode or contaminate the environment.   Blame a "faulty" design now too?  [/quote] I think there has long been a sort of tug of war between the concept of tank cars that cannot rupture and what is economical.  This derailment will certainly reivive that debate; with the help of the anti-fossil fuel protesters.  Just like the wreck that energized the PTC mandate, this oil train wreck is going to lead to new mandates.  The problem with making stronger tank cars is that every pound you add to the car structure is one less pound of oil that you can carry.
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