(Bloomberg) -- It’s not easy to run a train across a floating bridge. To extend light rail service across the mile-long stretch of Lake Washington that separates downtown Seattle from Mercer Island, ...

High-speed rail systems are found all over the globe. Japan’s bullet train began operating in 1964. China will have 31,000 miles (50,000 kilometers) of high-speed track by the end of 2025. The fastest ...