Ryōmō Line
The is a Japanese railway line connecting Oyama in Tochigi Prefecture with Maebashi in Gunma Prefecture. long, the line is owned and operated by the East Japan Railway Company (JR East). The name refers to the fact that Gunma and Tochigi prefectures were once part of an ancient province called , which was later split into Kōzuke (Gunma) and Shimotsuke (Tochigi). This line connects both halves of the old province. Services. Most Ryōmō Line services continue beyond Shin-Maebashi and terminate at on the Joetsu Line. Local trains run about once in an hour during the day between Oyama  and Maebashi and twice or three times as frequently between Maebashi and Takasaki. Some rapid services from Ueno and the Shōnan-Shinjuku Line travel through onto the Ryōmō Line, but they stop at every station. Rolling stock. Present. Takasaki to Oyama Takasaki to Maebashi (Takasaki Line through services) Ashikaga Ō-Fuji-Matsuri special services History. The Oyama to Kiryu section was opened in 1888 by the Ryomo Railway, and extended to Shin-Maebashi the following year. The company merged with the Nippon Railway in 1897, and that company was nationalised in 1906.