Aoimori Railway Line

The Aoimori Railway Line is operated in two sections:^[3]

• Metoki — Hachinohe
• Hachinohe — Aomori

No services commence or terminate at Metoki - all trains operate a through service to/from Morioka on the Iwate Galaxy Railway Line.^[3]

JR East operates the Shimokita Rapid train between Hachinohe and Ōminato on the JR East Ōminato Line, using the Aoimori Railway Line between Hachinohe and Noheji. As of September 2025^[update], three round trips per day operate.^[4]

All services operated by Aoimori Railway Company (and through services on the Iwate Galaxy Railway Line) are Local trains, stopping at every station.^[3]

• Aoimori 701 series 2-car EMUs x9
• Aoimori 703 series 2-car EMUs x2

The Aoimori Railway operates a fleet of 701 series two-car electric multiple units (EMUs). One set was built from new in September 2002, while eight more were transferred from JR East.^[6]

Two new two-car Aoimori 703 series EMUs were delivered in November 2013 and introduced from the start of the 15 March 2014 timetable revision.^[6]

The railway has been negotiating with the city of Aomori since December 2015 on a proposal to open a new station between Tsutsui Station and Aomori Station near the point at which the railway passes under Japan National Route 103.^[7] The station would be part of a sports arena development for the 2025 National Sports Festival of Japan to be held in Aomori.^[8] The neighborhood the station would serve is a primarily residential area, but it would also provide access to some busy shopping centers within walking distance to the station.^[9] As of January 2021, no final decision has been made regarding the construction of the new station.^[10]

The predecessor to the Aoimori Railway Line was completed as the Metoki–Aomori portion of the Nippon Railway on 1 September 1891.^[11] When the Nippon Railway was nationalized on 1 November 1906, it became part of the Japanese National Railways (JNR) system and was designated part of the Tōhoku Main Line on 12 October 1909.^[12] With the privatization and dissolution of JNR on 1 April 1987, the line came under the control of East Japan Railway Company (JR East).^[13]

On 1 December 2002, with the opening of the Tōhoku Shinkansen, the portion of the Tōhoku Main Line located in Iwate Prefecture became the Iwate Galaxy Railway Line, and the portion in Aomori Prefecture from the Iwate border to Hachinohe Station became the Aoimori Railway Line.^[14] With the opening of the Tōhoku Shinkansen extension to Shin-Aomori on 4 December 2010, the Tōhoku Main Line tracks between Hachinohe and Aomori were transferred from JR East to Aoimori Railway Company, resulting in the completion of the Aoimori Railway Line.^[15]

Commencing in December 2010, coinciding with the opening of the Tōhoku Shinkansen to Shin-Aomori, JR East operated the Resort Asunaro sightseeing train between Hachinohe and Ōminato using the Aoimori Railway Line between Hachinohe and Noheji.^[16] The last service operated on 20 August 2023.^[17]

There have been a few new developments along the line since its transfer to Aoimori Railway Company. On 12 March 2012, Nonai Station was relocated 1.5 kilometers (0.93 mi) southwest of its original location. Tsutsui Station, near Aomori High School, was opened on 15 March 2014. Two-car Aoimori 703 series sets began operations on the line on the same day to handle the increased loads presented by the opening of Tsutsui Station.^[18]

• List of railway lines in Japan