津軽半島
Plans existed to link the prefectural capital of Aomori with the northern tip of the Tsugaru Peninsula from the time of the Meiji period Railway Construction Act. In 1930, the privately held Tsugaru Railway began operations on the western side of Tsugaru Peninsula, and surveying work was completed by the Japanese Government Railways (JGR) to build a government-operated line on the eastern side of Tsugaru Peninsula. These plans were postponed by the outbreak of World War II, and were only resumed in the 1950s under the Japanese National Railways (JNR).