Busan Metro Line 4 () is a

rubber-tyred metro A rubber-tyred metro or rubber-tired metro is a form of rapid transit system that uses a mix of road and rail technology. The vehicles have wheels with rubber tires that run on rolling pads inside guide bars for traction, as well as traditional ...

line of the

Busan Metro The Busan Metro () is the urban rail system operated by the Busan Transportation Corporation of Busan, South Korea. The metro network first opened in 1985 with seventeen stations. The Metro itself consists of 4 numbered lines, covering of ro ...

network that connects part of

Gijang-gun Gijang County is a ''gun'', or county, located between Haeundae-gu and Ulsan in northern Busan, South Korea. History Gijang first appears under its current name in the annals of the year 757, during the Unified Silla period. At that time it wa ...

Busan Busan (), officially known as is South Korea's most populous city after Seoul, with a population of over 3.4 million inhabitants. Formerly romanized as Pusan, it is the economic, cultural and educational center of southeastern South Korea, w ...

, and upper

Haeundae-gu Haeundae District ( ko, 해운대구) is a district ( ''gu'') of Busan, South Korea. Haeundae has a population of about 423,000, the most populous district of Busan with 11.6% of the city population, and covers an area of 51.44 km² (19. ...

, into

Dongnae-gu Dongnae District is a ''Administrative divisions of South Korea, gu'' in central Busan, South Korea. Administrative divisions It has a population of about 300,000, and an area of 16.7 square kilometers. It was once a separate city, the princip ...

Korea. It is operated by the

Busan Transportation Corporation The Busan Transportation Corporation (Hangul:부산교통공사, Hanja:釜山交通公社) was established on January 1, 2006, following the abolition of the Busan Urban Transit Authority, which was founded in 1987. It currently operates the Busa ...

. Opened on 30 March 2011, the line is a rapid transit (metro) system consisting of 14 stations - 8 underground, 1 on-ground, and 5 above-ground. The line color is blue. A trip through the entire line takes about 24 minutes. Unlike lines 1 to 3 of Busan Metro, the trains are driverless and run with pneumatic tires on

concrete Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most wi ...

track (

Roll way A roll way or running pad is the pad placed on a concrete slab or on the ties on the outside of the conventional track along both running rails of a rubber-tyred metro or along the unconventional track of a tram. The rubber-tyred wheels roll d ...

) between two

guide bar The rubber-tyred metro systems that incorporate track have angle irons as guide bars, or guiding bars, outside of the two roll ways. The Busan Subway Line 4, that lacks a rail track, has I-beams installed as guide bars. The flanges are vert ...

Lines 3 and 4

While

Busan Metro Line 3 Busan Metro Line 3 () is a line of the Busan Metro system. The line was built from 1997 to 2005 and opened on November 28, 2005. The line is long, and has 17 stations. Each train of the line has 4 cars. Line 3's trains have an open gangway betwee ...

was being planned, the planners thought about making what is now Busan Metro Line 4 the 2nd phase of

. However, for several reasons, they have made this 2nd phase into a new line called Busan Subway Line 4.

Archaeology

Compared to Line 3, Line 4 took quite a long time for its construction. There are many reasons for this; however the most significant one is that there were many artifacts found in the construction site of the line, including those from the time of the

Three Kingdoms of Korea Samhan or the Three Kingdoms of Korea () refers to the three kingdoms of Goguryeo (고구려, 高句麗), Baekje (백제, 百濟), and Silla (신라, 新羅). Goguryeo was later known as Goryeo (고려, 高麗), from which the modern name ''Kor ...

and the

Joseon Dynasty Joseon (; ; Middle Korean: 됴ᇢ〯션〮 Dyǒw syéon or 됴ᇢ〯션〯 Dyǒw syěon), officially the Great Joseon (; ), was the last dynastic kingdom of Korea, lasting just over 500 years. It was founded by Yi Seong-gye in July 1392 and re ...

. These artifacts had great historical value, so they caused the completion date of the line to be delayed from its original date of opening in 2008. Some of these artifacts are being displayed inside a historical museum dedicated to this in Suan Station (the museum opened on 28 January 2011).

Rolling stock

Woojin Industrial System Company Limited Woojin Industrial Systems Company Limited ( ko, 우진산전) is a South Korean manufacturer of rolling stock including metro, electric bus, peoplemover and monorail vehicles. Customers Heavy rail * Indonesia ** Kualanamu Airport Rail Link ...

, supplied urban rubber tire trains for Line 4.

List of stations

References

External links