U.S. regulators on Friday railway safety rules issued in order to prevent the kind of runaway fuel train accident, destroying the small town in Canada last month.
Under the rules, rail cars carrying hazardous materials, such as combustible main tracks can not be left unattended or an adjacent track, unless specifically authorized.
Rail must improve their safety procedures and record keeping of the train, carrying hazardous materials, and the brake, according to the Federal Railroad Administration rules.
Last month, a parked train carrying crude oil broke loose, Quebec Lac-Megantic crashed, exploded into a fireball, causing 47 deaths. It is North America's two decades worst rail disasters.
U.S. Transportation Secretary Anthony Fox said in a statement, said: "Safety is our top priority."
"While we wait for a full investigation (Canada events) end, the Department is taking steps today to help prevent similar incidents in the United States."
Association of American Railroads, said it agreed to implement the new rules of harmful substances, including crude oil and ethanol.
Canadian Transportation Safety Board said Thursday that its investigation will continue for several months, and concluded that it was too early.
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