page_title: Korail Class 311000
section_title: 1st generation
hierarchical_section_title: Korail Class 311000 / Generations / 1st generation
caption_attribution_description: English: 311026 Gyeongbu Line Southbound(to Cheonan) @Cheonan Station
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 generation of Class 311000 trains are nearly identical to the first generation Class 341000 and 351000 cars, on which they were based. The first generation trains were built from 1996 to 1999. Because of the flat front ends on these trains, railfans nicknamed the trains "flat face" (납작이).
  The current trains are numbered 311-01~311-41, but there was one more train prior to 2008, and all were numbered in the 5000-series (trains 5-01~5-42) when delivered. The additional train, train 5-19, was involved in an accident that wrecked cars 5719 and 5119; the remaining eight cars were converted to and reconfigured as Class 319000 trains 319-06~319-07. Meanwhile, trains 5-01~5~18 were renumbered to 311-01~311-18, and trains 5-20~5-42 into 311-19~311-41, since they were not converted.
  Trains 311-01~311-27 and former train 5-19 were built by Hyundai Precision & Industries from 1996 to 1997 to expand service on Line 1. Trains 311-28~311-41 were built by Daewoo Heavy Industries from 1998 to 1999, mainly to replace the 1st batch Class 1000 trains, which were starting to approach the end of their 25-year lifespans.
  Trains 311-28~311-41 include cars with wheelchair space. Trains 311-39 (one car only), 311-40, and 311-41 used converted 2nd generation Class 1000 non-driving unpowered cars (from former 1st generation sets 1-39~1-41) from the time they were manufactured to 2019. Train 311-40 now uses two Class 311000 non-driving unpowered cars, train 311-41 uses two Class 341000 non-driving unpowered cars, and train 311-39 uses one Class 341000 non-driving unpowered car.
  Train 311-02 was damaged in a derailment north of Noryangjin on May 9, 2016. Train 311-01 was taken out of service for unknown reasons in mid-2017. The non-driving cars of train 311-01 were utilized on Class 341000 train 341-04. Meanwhile, several motor cars from train 311-02 were utilized on other Class 341000 trains, and the two unpowered non-driving cars were used to replace the original Class 1000 unpowered cars in train 311-40.
caption: Class 311000 (1st generation) train 311-26 (ex-Class 5000 train 5-27)
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