The Tōkaidō Main Line is a major railway line in Japan, connecting Tokyo and Osaka. It is operated by Central Japan Railway Company (JR Central) and spans approximately 515 kilometers. The line serves as a vital transportation route, facilitating travel between two of Japan's largest cities. Opened in 1889, the Tōkaidō Main Line has undergone numerous upgrades and expansions over the years. It features various train services, including the famous Shinkansen (bullet train), which significantly reduces travel time. The line plays a crucial role in Japan's economy and daily commuting for millions of passengers.