Transportation in South Korea is provided by extensive networks of railways, highways, bus routes, ferry services and air routes that traverse the country. South Korea is the third country in the world to operate a maglev train, which is an automatically run people mover at Incheon International Airport. History Development of modern infrastructure began with the first Five-Year Development Plan (1962–66), which included the construction of 275 kilometers of railways and several small highway projects. Construction of the Gyeongbu Expressway, which connects the two major cities of Seoul and Busan, was completed on 7 July 1970. The 1970s saw increased commitment to infrastructure investments. The third Five-Year Development Plan (1972–76) added the development of airports, seaports. The Subway system was built in Seoul, the highway network was expanded by 487 km and major port projects were started in Pohang, Ulsan, Masan, Incheon and Busan. The railroad network experienced improvements in the 1980s with electrification and additional track projects. Operation speed was also increased on the main lines. Though the railroad was still more useful for transportation of freight, passenger traffic was also growing. There was 51,000 kilometers of roadways by 1988. Expressway network was expanded to connect more major cities and reached a combined length of 1,539 kilometers before the end of the decade. Rail The largest railway operator is Korail. Railway network is managed by Korea Rail Network Authority. Korea Train Express began service in April 2004 as Korea's first high-speed service. Intercity services are provided by ITX-Saemaeul and Mugunghwa-ho. ITX-Saemaeul generally stops less than Mugunghwa-ho. They stop in all stations and seat reservation is not available. On routes where KTX operates, air travel significantly declined with fewer passengers choosing to fly and airlines offering fewer flights. Nuriro Train service runs between Seoul-Sinchang route and other lines. Nuriro Train serves commuters around Seoul Metropolitan Area, providing shorter travel time than Seoul Subway. The rapid trains have same cost and seat reservation as Mugunghwa-ho. Korail plans to expand the service area. (Stopped its service) Subways South Korea's six largest cities — Seoul, Busan, Daegu, Gwangju, Daejeon and Incheon — all have subway systems. Seoul's subway system is the oldest system in the country, with the Seoul Station – Cheongnyangni section of Line 1 opening in 1974. Trams The first tram line in Seoul started operation between Seodaemun and Cheongnyangni in December 1898. The network was expanded to cover the whole