| http://www.w3.org/ns/prov#value | - Under floor equipment is specially reinforced to withstand the rigors of operating in urban areas, where shopping carts, tires and other debris frequently find their way onto the tracks. (The Northeast Corridor is only partially fenced in, as opposed to European high speed lines.) The Acela Express is the first train to comply with the Federal Railroad Administration's Tier II crashworthiness stan
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