U.S. transportation regulators issued tough new rules for railroads hauling crude oil and ethanol that will require trains be equipped with expensive new brake systems. Photo: Associated Press U.S. transportation regulators Friday issued tough new rules for railroads hauling crude oil and ethanol that will require trains be equipped with expensive new brake systems. The regulations also require that sturdier tank cars be built for hauling oil, ethanol and other flammable liquids and prescribes upgrades for an estimated 154,500 tank cars already carrying flammables. Trains carrying large amounts of crude oil will be restricted to 30 mile an hour speeds if they don’t have new electronic brakes installed by 2021. Other flammable liquids, including ethanol in high volumes would be speed-restricted after 2023. Trains with either a block of 20 or more cars or a total of 35 or more cars of flammable liquid will be required to […]