The Obama administration will unveil Wednesday new rules proposing stricter safety standards on trains carrying flammable fuels, including oil and ethanol, according to a Capitol Hill source familiar with the pending regulation. The rules, to be announced by U.S. Transportation Secretary Anthony Foxx, will include standards for tank cars, speed limits for trains carrying flammable fuels, brake standards and required testing for oil and other volatile liquids. Railroads, oil companies and railcar owners have been expecting new federal rules meant to improve the safety of oil shipments in the wake of several fiery train accidents. The proposed regulation could impact several industries. The railroads have been worried that slower speed limits could cause major gridlock, while oil companies have fretted that new rules about tank car volumes might prevent them from shipping all the crude they wanted. Shipments of oil on trains have grown exponentially in the past few […]