According to this plan, a new route, separate from the Tokaido main line and Sanyo main line, was to be constructed with broad gauge (of 1.435 mm or the standard gauge) from Tokyo to Shimonoseki, and trains were to be operated at a maximum speed of 200 km/h, exceeding that of the 'Asia' train by Mantetsu, connecting Tokyo to Osaka in four hours and to Shimonoseki in nine hours.
これは、東京から下関まで在来の東海道・山陽本線とは別に広軌（1,435mm・標準軌）の新路線を建設し、最高速度200km/hと満鉄「あじあ」号を超える高速運転を行い、東京-大阪間を4時間、東京-下関間を9時間で結ぶ事を計画したものであった。