was built in 1971. Kawagoe Depot still carries out lighter maintenance and inspection duties. A stabling yard is located to the south of Shimo-Itabashi Station. Built in 1935, this is capable of stabling eight 10-car trains, and is used for stabling trains close to Ikebukuro outside the peak hours. Crew operation The line is operated by two-person crews (except for the section between Ogawamachi and Yorii, which is one-person operated). Crews report to either Shiki, Kawagoeshi, or Shinrinkōen stations. Mainline crew changeovers take place in Ikebukuro Station, Wakōshi Station, Kawagoeshi Station, or Shinrinkōen Station. Changeovers at Wakōshi are only for through trains from Tokyo Metro lines, where Tobu Railway and Tokyo Metro crews change each other. Crews may have to travel by scheduled trains in order to reach a handover point, particularly crews picking up trains in Wakōshi, or Shiki crews. Handovers in Ikebukuro are to facilitate short turnaround times while allowing crews to take brief breaks. History On 1 May 1914, the opened the section between Ikebukuro and (located between the present stations of Kawagoeshi and Kasumigaseki). The Tokyo terminus of the line was originally planned to be at , and this is where, even today, the "0 km" post for the line is located (with Ikebukuro Station marked by km post "-1.9"). The section from Shimo-Itabashi to Ikebukuro was initially treated as a light railway extension of the main line. Two years later, the line was extended from Kawagoemachi (now Kawagoeshi) to Sakadomachi (now Sakado), and at the same time, the section between Kawagoemachi and Tanomosawa was abandoned. In 1920, the Tojo Railway was absorbed into the Tobu Railway, and in 1923, the line was extended from Sakadomachi to Ogawamachi. In 1925, the line was further extended from Ogawamachi to Yorii, completing the present-day Tobu Tojo Line. While the original plan had been to extend the line as far as Gunma Prefecture, the connection at Yorii did at least allow for through operations via the Chichibu Railway. The line from Ikebukuro to Yorii was electrified in October 1929. The Ogose Line from Sakadomachi to Ogose was not opened until much later, in 1943. With the steadily growing population along the line, trains were gradually increased in length to the maximum 10 cars seen today, and the original single track was doubled and even quadrupled in some places (between Wakōshi and Shiki). The line from Ikebukuro to Yorii covers