line to Semarang, allowing gauge trains to travel between Semarang, Solo and Yogyakarta via Gambringan, on the line to Surabaya instead of on the original line via Kedungjati. In 1942 and 1943 in Java, under Japanese military occupation, conversion from took place to on the BrumbungKedungjatiGundih main line and the KedungjatiAmbarawa branch line. Until the 1970s, a short section of dual gauge and line existed in North Sumatra on a joint line of the Deli Railway and the Atjeh Tram. Some sugar mill railways in Java have dual-gauge sections. Ireland Ireland's Ulster Railway underwent a gauge conversion from 1880mm to the new Irish standard of . The Dublin & Drogheda Railway underwent a gauge conversion because the gauges were too close to allow a dual-gauge line. Italy The Potenza Avigliano Lucania line in Italy is a dual gauge rail with and tracks. Japan In Japan, the national standard is narrow gauge. Dual gauge is used where the Shinkansen (bullet train) lines join the main network. For example, part of the Ōu Main Line became part of the Akita Shinkansen and was converted to dual gauge in a limited section. The longest () dual gauge section in Japan is near, and in, the Seikan Tunnel. Sections of the Hakone Tozan Line are among a number of other dual-gauge lines. Mexico Mexico previously had and dual gauge track. Netherlands The first railway lines in the Netherlands were constructed with a track gauge of . For the 1939 centennial celebration, an exact replica of the country's first locomotive "De Arend" was built using the original blueprints. Since 1953, the locomotive is housed at the Dutch National Railway Museum, where in recent years, a dual-gauge track has been constructed in the rail yard, allowing for the locomotive to drive back and forth on special occasions. Poland In Poland, there is of and dual-gauge track in the Greater Poland Voivodeship, linking Pleszew with a nearby mainline station. It is served by narrow-gauge passenger trains and standard-gauge freight trains. Russia Between 2008 and 2012, a dual-gauge cross-border track was rebuilt between Khasan, Russia, and Rajin, North Korea; its gauges were the Russian and Korean . Spain In Spain, there is of dual gauge in the AVE line from Zaragoza to Huesca, usable for both standard-gauge high-speed trains and Spanish network trains. Some dual-gauge sidings are at Port Bou on the French border. In 2009, Adif called