The first high-speed rail line in the world was built in Japan.
Japan’s Tōkaidō Shinkansen opened on 1 October 1964, linking Tokyo and Osaka. It was purpose-built for fast passenger service, rather than being an upgraded conventional railway, and introduced the Shinkansen system that became famous worldwide as the “bullet train.”
The project arose because Japan’s existing Tōkaidō Main Line was heavily congested by the 1950s. Japanese National Railways built a separate, standard-gauge route with gentle curves, dedicated tracks, advanced signaling, and electric multiple-unit trains. The timing was deliberate: the line opened shortly before the 1964 Tokyo Olympics.
China, France, and Germany later developed enormous high-speed rail networks, but they were not first. France’s TGV began service in 1981, while China’s first high-speed line opened decades after Japan’s pioneering route.