High-speed trains are not widely available in the U.S. , though some can top nearly 200 mph . Expert : The U.S train is `` enormously complicated , '' nothing like U.S. trains . the Acela Express regulates U.S train speeds and other safety measures . Also , the train that crashed near Santiago de Compostela is an extremely complicated machine , nothing like any train in the United States , said University of Dayton assistant professor Steven Harrod . Efforts to expand high-speed programs have met with little success in U.S. .
High-speed trains are not widely available in the U.S. , though some can top nearly 200 mph . Expert : The U.S train is `` enormously complicated , '' nothing like U.S. trains . the Acela Express regulates U.S train speeds and other safety measures . Efforts to expand high-speed programs have met with little success in U.S. .