Any big train wreck that involves harm to the folks and environment will be studied over and over.FRA,EPA. insurance companies for and against the railroad and various green groups will all be spending big bucks to to state their version of what happened and the effects.
But what can an emergency response team do in the middle of a chemical tank car fire ? Nothing. Let it burn is the safest thing to do. I don't know about you but I'm not going to stand there pointing a fire hose at a 200,00 lb. roman candle, when the water itself could be making matters worse.
Cosmic brought up some FRA brake laws that were never enacted, I don't think( usually ) those laws if enacted and implemented would make much of a difference. From a security camera video, it showed a box car located ahead of the tank cars on fire from sticking brakes. If the video was from that train or not, it does show that the tank cars aren't necessarily the problem.
A possible solution, and the railroads would fight it tooth and nail, would be to install more temperature sensors along the right of way. Detectors that would only broadcast on the radio when there is an elevated temp with axle location.