trains were also used: The 401 series, 701 series, which had been transferred from the Shinjuku line system to the Tamagawa line, and the 451 series, 551 series, and the 571 series, which were called Akaden trains due to their red and beige livery. History The first section of the line, between Musashi-Sakai and Kita-Tama Station (present-day Shiraitodai Station), opened on 22 October 1917. The line was extended to Koremasa on 20 June 1922. In 1927, the company was absorbed by the Seibu Railway. The entire line was electrified in 1950. Freight operations ceased in 1967. References This article incorporates material from the corresponding article in the Japanese Wikipedia. External links Seibu-Tamagawa Line Guide: information on stations and their neighbours, tickets, and transfers in both English and Japanese Railway lines in Tokyo Tamagawa Line 1067 mm gauge railways in Japan Railway lines opened in 1917