title: Aoimori 703 series
text: # Aoimori 703 series
  
  The Aoimori 703 series (青い森703系) is an electric multiple unit (EMU) train type operated by the third-sector railway operator Aoimori Railway on the Aoimori Railway Line in Aomori Prefecture, Japan, since March 2014.
  
  ## Overview
  
  Based on the JR East E721 series EMUs first introduced in 2006, two two-car 703 series trains were manufactured by J-TREC in Yokohama, Kanagawa. Built at a total cost of 800 million yen, one set was purchased directly by the Aoimori Railway, and one set is leased.
  
  ## Formation
  
  The two two-car sets consist of one motored ("Mc") car and one unpowered trailer ("Tc") car, and are formed as shown below.
  
  | Car No. | 1 | 2 |
  | - | - | - |
  | Designation | Tc | Mc |
  | Numbering | Aoimori 702-1x | Aoimori 703-1x |
  
  The "Mc" car is fitted with one single-arm pantograph.
  
  ## Interior
  
  Passenger accommodation consists of a mixture of transverse seating bays and longitudinal bench seating. Passenger information is provided by LED displays above the doorways. The trains are equipped with universal access toilets.
  
  ## History
  
  The two sets on order were delivered from J-TREC's Yokohama factory to Aomori in November 2013. The two sets entered revenue service from the start of the revised timetable on 15 March 2014.
  
  ### Future plans
  
  Effective the timetable revision on 18 March 2023, 703 series will operate as far south as Sannohe Station on the Aoimori Railway Line. Trains currently only operate as far south as Hachinohe Station.
  
  * The first two sets on delivery from J-TREC in November 2013
  * The first two sets being delivered in November 2013
  