page_title: Korail Class 311000
section_title: 1st batch
hierarchical_section_title: Korail Class 311000 / Generations / 4th generation / 1st batch
caption_attribution_description: English: Korail Line 1 Gyeongin express train of Hyundai Rotem Korail 311000-series cars (trainset 311x95) at Guro.
context_page_description: The Korail Class 311000 trains, some train of which were formerly identified as Korail Class 5000 trains, are commuter electric multiple units in South Korea used on Seoul Subway Line 1. Class 311000 trains were manufactured and delivered between 1996 and 2006, and again from 2012 to 2014 to expand service on the Gyeongbu Line and the Gyeongwon Line, and to replace older trains.
  As numbering spots in the 311000 series run out, the newest Class 311000 trains have begun to sport numbers in the 312000 series.
context_section_description: The first batch of the fourth-generation Class 311000 trains were built from 2012 to 2014. They replaced refurbished 2nd batch Class 1000 trains that reached the end of their 25-year lifespans. The front end received such updates as smaller LED destination signs and new bumpers, and several improvements were made to the interior including new overhead LCD destination displays and clearer speakers.
  The trains are numbered 311-83~311-94. The trains are the first to be delivered new under the 311000-series numbering. Trains 311-83~311-87 used converted Class 321000 cars when delivered in August 2012, but due to complaints from Jungang Line passengers about shortened trains on the line, the trains were taken out of service in late 2013, reconfigured with newly made cars in 2014, and redeployed in August 2014. Trains 311-92~311-94 are the first trains to have been delivered new with LED headlights. Meanwhile, trains 311-88~311-89 were sidelined for years until receiving newly made cars in 2014.
  Train 311-90 was originally 8-car Class 361000 train 361-14, which was last used on the Jungang Line to make up for the shortened trains on the line. Following the lengthening of the Jungang Line's trains back to eight cars, the two trains were taken out of service, lengthened to 10 cars with two newly built cars, and redeployed on Line 1 in December 2014. Train 311-91 was originally 8-car Class 361000 train 361-15, which was also last used on the Jungang Line to make up for the shortened trains on the line. However, unlike train 311-90, this train was taken out of service in April 2017, and converted back to a Class 361000 train, but is expected to be converted to train 311-91 by 2020. As a result, the two newly built cars in train 311-91 have been stored out of service for the time being.
caption: Class 311000 train 311-95
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