In addition, the Sotoku-fu conducted research for the north link line, the south link line and the line through the mountains of central Taiwan but they were not established due to the outbreak of the Pacific War.
このほか総督府は北廻線、南廻線、中央山脈横断線などの調査も行ったが、これらの新規路線は太平洋戦争の激化により計画にとどまっている。