The Mugunghwa-ho or Mugunghwa is a class of train operated by Korail, main railway operator of South Korea. In 1980, new express train, named 우등 (Udeung, literally meaning Premium), was introduced. Soon it was renamed as Mugunghwa, which was a name of an express train operated in 1960s. Since train classes below Mugunghwa had been retired, thus Mugunghwa trains are now the cheapest class of trains to operate cross-country. Along rural lines such as the Gyeongbuk Line, they remain the only class of passenger train operating. They (and in some cases the Tonggeun) are the only trains to stop at many stations not served by Saemaul-ho or KTX trains. Mugunghwa are built to accommodate large numbers of standing passengers, and frequently have many more standees than sitting passengers.
The Mugunghwa-ho takes its name from the Mugunghwa, the national flower of South Korea.
(From Wikipedia)