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The Federal Railroad Administration's final rule says the largest U.S. railroads must train individuals to supervise the installation, adjustment, or maintenance of CWR track. A review of accidents ...

Modern railroads don’t need expansion joints because they use continuous welded rail, a system that locks long stretches of steel into a stable, tensioned state. Engineers anchor the tracks so tightly ...

Railroads once needed gaps between rails, creating the famous clacking sound of train wheels. Engineers feared that welding rails into one continuous track would make them expand, buckle, and derail ...