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Tuen Ma line
The Tuen Ma line (Chinese: 屯馬綫) is a commuter rail / rapid transit line that forms part of the Mass Transit Railway (MTR) system in Hong Kong. It is 56.2 kilometres (34.9 mi) in length, making it the longest line of the MTR network. It has a total of 27 stations, more than any other in the MTR system. It is indicated by Brown on the MTR map.
The Tuen Ma line is formed by a merger of two former MTR lines, the West Rail line and the Ma On Shan line via a new stretch of mostly underground railway known as the "Tai Wai to Hung Hom section" (大圍至紅磡段) of the Sha Tin to Central Link project. It consists of 11 kilometres (6.8 mi) of track and six new intermediate stations. The Tai Wai to Kai Tak section (大圍至啟德段) opened on 14 February 2020, while the Kai Tak to Hung Hom section opened on 27 June 2021, thereby completing the line.
During the planning and construction phase, this line was referred to as the "East West Corridor" (東西走廊). On 25 May 2018, the operational name "Tuen Ma line" was confirmed by the MTR Corporation, reflecting the names of Tuen Mun and Ma On Shan, Tuen Mun being the terminal of the West Rail line and Ma On Shan being the namesake of the Ma On Shan Line. The full journey time is about 73 minutes.
The line starts at Tuen Mun station, Tuen Mun and ends at Wu Kai Sha in Wu Kai Sha, Ma On Shan. It is 56.2 km (34.9 mi) long with 27 stations, and a complete journey lasts 73 minutes in either direction. There are ten interchange stations: Tai Wai and Hung Hom with the East Rail line; Diamond Hill and Ho Man Tin with the Kwun Tong line; Nam Cheong with the Tung Chung line; Mei Foo with the Tsuen Wan line; Yuen Long, Tin Shui Wai, Siu Hong and Tuen Mun which connects to the Light Rail. The line has two maintenance depots at Tai Wai and Pat Heung.
Like all MTR lines, the Tuen Ma line is grade separated throughout its entire length. It is mainly underground in the urban sections of Kowloon and Tsuen Wan, and at-grade or elevated in the rest of the New Territories. Most of the original Ma On Shan line (between Tai Wai and Wu Kai Sha) is built on a viaduct on a rail reservation that existed from the outset of the development of Ma On Shan New Town. However, the section between Shek Mun and Tai Shui Hang is at ground level, located between the carriageways of the Tate's Cairn Highway, along with the section between Tai Wai to Hin Keng, which is also partially on an embankment and parallel to the East Rail line. The line then goes underground towards the Lion Rock Tunnel, which takes trains through Lion Rock Country Park. Then, it goes through Diamond Hill station and Kowloon City before emerging into open air near Hung Hom station at ground level. The line then heads southwest into a tunnel after the station and descending underground through East Tsim Sha Tsui and Austin stations (the former having originally being served by the East Rail line, and the track heading northwards through the latter), before returning to ground level (though still fully covered) at Nam Cheong station. The track then runs northwest through a sealed box tunnel just to the north to and under the West Kowloon Highway through Lai Chi Kok Park into Mei Foo station, which has a ground-level/underground hybrid design. Bored tunnels traverse densely populated Kwai Chung and under the Tsuen Wan line towards Tsuen Wan West station on reclaimed land, after which a 5.5 km (3.4 mi) bored rock tunnel, the Tai Lam Tunnel, takes trains through Tai Lam Country Park.
The line then emerges from the tunnel just south of the train depot at Pat Heung and initially runs at-grade, and later on an embankment as it approaches Kam Sheung Road station. The rest of the line is fully elevated and constructed on a continuous viaduct, running in a westerly direction through the new towns of Yuen Long and turning towards the south at Tin Shui Wai, before taking a bend towards the Tuen Mun River and eventually terminating at Tuen Mun station.
Construction methods predominantly include tunnel boring machines and cut-and-cover, though the Lion Rock Tunnel between Hin Keng and the Ma Chai Hang Recreation Ground was constructed using the drill-and-blast method.
While road and rail traffic in Hong Kong move on the left, the eastern section of the Tuen Ma line is an exception, as trains move on the right between Sung Wong Toi and Wu Kai Sha. This allows the southbound tracks of this line and the East Rail Line to lie opposite each other at Tai Wai, such that cross-platform interchange could be provided there. This design was to speed up passenger interchange between the East Rail line and Tuen Ma line towards Kowloon during the morning commute, although the reverse transfer would require going down to the concourse level and back up again. This layout is maintained as far as Sung Wong Toi, before the line goes into a stacked formation at To Kwa Wan, which has a split platform layout to allow the tracks to switch sides and adopt the left-hand running used on the original West Rail Line.
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Tuen Ma line
The Tuen Ma line (Chinese: 屯馬綫) is a commuter rail / rapid transit line that forms part of the Mass Transit Railway (MTR) system in Hong Kong. It is 56.2 kilometres (34.9 mi) in length, making it the longest line of the MTR network. It has a total of 27 stations, more than any other in the MTR system. It is indicated by Brown on the MTR map.
The Tuen Ma line is formed by a merger of two former MTR lines, the West Rail line and the Ma On Shan line via a new stretch of mostly underground railway known as the "Tai Wai to Hung Hom section" (大圍至紅磡段) of the Sha Tin to Central Link project. It consists of 11 kilometres (6.8 mi) of track and six new intermediate stations. The Tai Wai to Kai Tak section (大圍至啟德段) opened on 14 February 2020, while the Kai Tak to Hung Hom section opened on 27 June 2021, thereby completing the line.
During the planning and construction phase, this line was referred to as the "East West Corridor" (東西走廊). On 25 May 2018, the operational name "Tuen Ma line" was confirmed by the MTR Corporation, reflecting the names of Tuen Mun and Ma On Shan, Tuen Mun being the terminal of the West Rail line and Ma On Shan being the namesake of the Ma On Shan Line. The full journey time is about 73 minutes.
The line starts at Tuen Mun station, Tuen Mun and ends at Wu Kai Sha in Wu Kai Sha, Ma On Shan. It is 56.2 km (34.9 mi) long with 27 stations, and a complete journey lasts 73 minutes in either direction. There are ten interchange stations: Tai Wai and Hung Hom with the East Rail line; Diamond Hill and Ho Man Tin with the Kwun Tong line; Nam Cheong with the Tung Chung line; Mei Foo with the Tsuen Wan line; Yuen Long, Tin Shui Wai, Siu Hong and Tuen Mun which connects to the Light Rail. The line has two maintenance depots at Tai Wai and Pat Heung.
Like all MTR lines, the Tuen Ma line is grade separated throughout its entire length. It is mainly underground in the urban sections of Kowloon and Tsuen Wan, and at-grade or elevated in the rest of the New Territories. Most of the original Ma On Shan line (between Tai Wai and Wu Kai Sha) is built on a viaduct on a rail reservation that existed from the outset of the development of Ma On Shan New Town. However, the section between Shek Mun and Tai Shui Hang is at ground level, located between the carriageways of the Tate's Cairn Highway, along with the section between Tai Wai to Hin Keng, which is also partially on an embankment and parallel to the East Rail line. The line then goes underground towards the Lion Rock Tunnel, which takes trains through Lion Rock Country Park. Then, it goes through Diamond Hill station and Kowloon City before emerging into open air near Hung Hom station at ground level. The line then heads southwest into a tunnel after the station and descending underground through East Tsim Sha Tsui and Austin stations (the former having originally being served by the East Rail line, and the track heading northwards through the latter), before returning to ground level (though still fully covered) at Nam Cheong station. The track then runs northwest through a sealed box tunnel just to the north to and under the West Kowloon Highway through Lai Chi Kok Park into Mei Foo station, which has a ground-level/underground hybrid design. Bored tunnels traverse densely populated Kwai Chung and under the Tsuen Wan line towards Tsuen Wan West station on reclaimed land, after which a 5.5 km (3.4 mi) bored rock tunnel, the Tai Lam Tunnel, takes trains through Tai Lam Country Park.
The line then emerges from the tunnel just south of the train depot at Pat Heung and initially runs at-grade, and later on an embankment as it approaches Kam Sheung Road station. The rest of the line is fully elevated and constructed on a continuous viaduct, running in a westerly direction through the new towns of Yuen Long and turning towards the south at Tin Shui Wai, before taking a bend towards the Tuen Mun River and eventually terminating at Tuen Mun station.
Construction methods predominantly include tunnel boring machines and cut-and-cover, though the Lion Rock Tunnel between Hin Keng and the Ma Chai Hang Recreation Ground was constructed using the drill-and-blast method.
While road and rail traffic in Hong Kong move on the left, the eastern section of the Tuen Ma line is an exception, as trains move on the right between Sung Wong Toi and Wu Kai Sha. This allows the southbound tracks of this line and the East Rail Line to lie opposite each other at Tai Wai, such that cross-platform interchange could be provided there. This design was to speed up passenger interchange between the East Rail line and Tuen Ma line towards Kowloon during the morning commute, although the reverse transfer would require going down to the concourse level and back up again. This layout is maintained as far as Sung Wong Toi, before the line goes into a stacked formation at To Kwa Wan, which has a split platform layout to allow the tracks to switch sides and adopt the left-hand running used on the original West Rail Line.