This article, titled Protecting Your Community From Crude Oil ‘Bomb Trains’, has practical advice on what do to if you find out if there are unit trains of fracked oil traveling through your community. 

You cannot stop them, but you can help your community prepare for them, by informing your local authorities about them, and what they should do in advance of any accident. Prepared with assistance from the National Resources Defense Council (NRDC):

NRDC article on bomb train