Tung Chung line
| Company type | Rapid transit line |
|---|---|
| Industry | Public transport |
| Founded | 1998 |
| Headquarters | Hong Kong , Hong Kong |
| Products | Rail transport service |
The Tung Chung line () is among the ten lines forming Hong Kong's MTR network, linking Tung Chung town with central Hong Kong. Conceived in the 1990s as a component of the Airport Railway initiative to support the new Chek Lap Kok Airport, it services eight stations along a route lasting approximately 31 minutes. On MTR maps, this line is denoted by the color Orange.
History
In October 1989, the Hong Kong government revealed plans to construct a new airport on Chek Lap Kok to replace the congested Kai Tak International Airport. The government tasked MTR Corporation with building a rail connection to this new airport. Although initially met with financial objections from the Chinese government prior to the 1997 handover, both administrations eventually reached an agreement, leading to construction commencing in November 1994. Originally named the Lantau line, it was renamed Tung Chung line during its development phase.
The Lantau Airport rail link consists of two distinct lines: the Tung Chung line and the Airport Express. These lines utilize shared rolling stock but feature different interior designs and liveries. Engineering consultants involved included Arup, Halcrow, Meinhardt, and Hyder Consulting.
The Tung Chung line was officially inaugurated on 22 June 1998 by Chief Executive Tung Chee-hwa, with passenger service commencing the following day.
An open house event took place at Nam Cheong station, an interchange between the Tung Chung line and the then upcoming West Rail line, on 16 December 2003. The station temporarily closed before reopening on 20 December 2003. To address growing passenger numbers, train capacity was increased from seven to eight cars.
Sunny Bay station began operations on 1 June 2005 as a transfer point for the Disneyland Resort line, coinciding with the resort’s launch two months later.
Between 2006 and 2007, four new EMUs from Korean manufacturer Rotem were introduced to boost service frequency. The first unit arrived on 9 February 2006 and entered operation on 12 June 2006. Platform modifications were undertaken to accommodate these slightly wider trains.
Route map
Rolling stock
| MTR Tung Chung line Rolling stock | ||||||
|---|---|---|---|---|---|---|
| Model | Manufacturedd | Time of manufacturing | Sets | Formation | Notes | |
| CAF-Train | Adtranz and CAF | 1996-1997 | 12 | V-W-X-Y-W-X-Z-V | ||
| K-Train | Rotem | 2004-2005 | 4 | V-Z-X-Y-W-X-Z-V | ||
| Q-Train | CRRC Qingdao Sifang | 2025-2027 | 12 | V-Z-X-Y-W-X-Z-V | Replacing CAF-Train | |
Route description
Covering a longer distance than many other MTR lines, the Tung Chung line predominantly operates above ground. It shares tracks with the Airport Express between Kowloon and Hong Kong station, as well as between Tsing Yi and Tung Chung East station. The two lines part ways just before reaching Tung Chung station.
Departing from Hong Kong station, the line travels underground beneath Victoria Harbour to arrive at Kowloon station. It then emerges above ground at Olympic station. Continuing elevated along the West Kowloon Expressway, it stops at both Nam Cheong station and Lai King station. The route crosses over the Rambler Channel to reach Tsing Yi station on Tsing Yi Island.
After traversing a tunnel on Tsing Yi Island, the line crosses both the Tsing Ma Bridge and Kap Shui Mun Bridge en route to Lantau Island. Following the path of the North Lantau Expressway, it serves Sunny Bay before terminating at Tung Chung. The segment between Sunny Bay and Tung Chung spans approximately 10 km and takes around six minutes.
During peak periods, some outbound trains end their journeys at Tsing Yi due to lower ridership beyond this point and limitations imposed by the Tsing Ma Bridge, which permits only one train per track every two and a half minutes.
Stations
Below is the compilation of stations served by the Tung Chung line.
Station Overview
| Livery | Station Name | Images | Interchange; Nearby connections |
Opening Date | District | |
|---|---|---|---|---|---|---|
| English | Chinese | |||||
| Template:White | ||||||
| Hong Kong | 香港 | Template:Rcb Template:Ric Central: Template:Rcb Template:Rcb |
22 June 1998; 28 years ago |
Central and Western | ||
| Kowloon | 九龍 | Template:Rcb Template:Rint Austin: Template:Rcb Template:Rint West Kowloon: Template:Ric Template:Ric High-speed rail to Mainland China |
Yau Tsim Mong | |||
| Olympic | 奧運 | — | ||||
Stations marked in Italic are currently under construction.
Design limitations
During the 1990s, while planning the Airport Railway (comprising the Tung Chung line and Airport Express) under British Hong Kong administration, the Chinese government raised concerns regarding the financial implications. This led to budget cuts that curtailed the level of service provided.
- Originally, the airport rail connection was planned with four tracks—two dedicated to the Airport Express and two for the Tung Chung line. However, this was scaled down to just two shared tracks, increasing susceptibility to disruptions caused by signalling faults.
- The Lantau Link segment, which includes the Tsing Ma Bridge, Ma Wan Viaduct, and Kap Shui Mun Bridge, only allows one train per direction at any given moment. This enforces a minimum interval of 2 minutes and 15 seconds between trains. As a result, during peak periods, some Tung Chung line services terminate at Tsing Yi instead of continuing along the entire route.
- The signalling system lacks the capability to give priority to Airport Express trains. Consequently, Tung Chung line trains that stop at Sunny Bay frequently cause delays for non-stopping Airport Express services. To mitigate this, Tung Chung trains occasionally extend their dwell time at Sunny Bay to allow Airport Express trains to pass.
- Limitations in power supply restrict the number of trains operating simultaneously between Kowloon and Lai King stations to one Airport Express and two Tung Chung line trains in each direction. This constraint results in a minimum headway of 3 minutes and 30 seconds on this section.
Tung Chung line extension
The Railway Development Strategy 2014 outlined plans to extend the Tung Chung Line westward by adding a new station at Tung Chung West.
In April 2020, detailed planning for this extension project—including two new stations—received approval from Carrie Lam and the Executive Council. Construction commenced in May 2023, with an anticipated expenditure of HK$24.2 billion. One of these stations will be an infill station located between existing stations, while the other will serve as a new underground terminus situated west of Tung Chung. The extension will increase the line length by approximately 1.3 kilometres and is targeted for completion by 2029. British engineering consultancies Arup and Atkins secured the contract for design services.
Airport Railway Extended Overrun Tunnel (AREOT)
A subterranean tunnel approximately 500 meters in length will be developed to the east of Hong Kong station to facilitate the turnaround of Tung Chung line and Airport Express trains, thereby enhancing operational adaptability. This initiative also involves the construction of a new ventilation building, designated as ARB. Work on this project is anticipated to commence in 2025, with completion targeted for 2032.