Steel expands when it gets hot so why don’t railroad tracks snap or buckle every summer? Modern rail systems use something called continuous welded rail, which distributes thermal stress along long ...

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 ...

A key logistics facility has been completed for California’s high-speed rail project, enabling the installation of track and ...