Thursday, October 2, 2008

Western Harbour Crossing

The Western Harbour Crossing is a dual 3-lane immersed tube tunnel in Hong Kong. It is the third tunnel to cross Victoria Harbour, linking the newly reclaimed land in West Kowloon with Sai Ying Pun on Hong Kong Island. It was constructed by the Western Harbour Tunnel Company on a 30 year franchise build-operate-transfer model proposed by the Government.

The Western Harbour Crossing is part of the Airport Core Programme which was a comprehensive set of infrastructure projects associated with the at Chek Lap Kok. The tunnel carries on the designation from the West Kowloon Highway, and connects to on Hong Kong Island.


Bus routes which use the crossing:
*Kowloon Motor Bus/New World First Bus: 904, 905, 914, 914X, 948, 948P
*New World First Bus: 970, 970X, 971
*: A10, A11, E11, R11, A12, 930, 962, 962A, 962B, 962C, 962S, 962X, X962, 967, 967X, 969, 969A, 969B, 969P, 969X, 973, 973P
*Kowloon Motor Bus: 373A, 934, 935, 960, 960A, 960P, 960S, 961, 968
*Overnights: N962, N969

Tseung Kwan O Tunnel

Tseung Kwan O Tunnel is a 900-metre tunnel beneath Ma Yau Tong in Hong Kong. Part of , it links ''Sau Mau Ping'', Kwun Tong of East Kowloon and the new town of ''Tseung Kwan O'' , Sai Kung in New Territories. It was used by 68 000 vehicles daily in 2000.

This tunnel is connected to ''Tseun Kwan O Road'' on the Kowloon side along with its toll plaza, and Tseung Kwan O Tunnel Road on the Tseung Kwan O side.

Tate's Cairn Tunnel

Opened on 26 June 1991, Tate's Cairn Tunnel is a four-lane tunnel in Hong Kong. Constructed as part of , it links Diamond Hill, Eastern Kowloon and Siu Lek Yuen, Sha Tin in the New Territories.

Its toll plaza is situated on the Sha Tin side, leading to Tate's Cairn Highway, Sha Lek Highway and various local roads. The tunnel joins the Kwun Tong Bypass and is connected with Lung Cheung Road and several local roads on the Kowloon side.

Tate's Cairn Tunnel is the longest road tunnel in Hong Kong, with the northbound tube having a length of 3,913 and southbound tube having a length of 3,945m.

Tunnel facilities

*dual-tube, 4-laned
*9 manual toll booths and 5 autotoll booth
*24 cross passages
*160 fire alarms
*156 emergency telephones
*320 fire extinguishers
*82 hose reels
*78 hydrants
*18,268 fluorescent tubes
*3,277 tunnel wall panels
*44 CCTVs inside tunnel tubes
*10 CCTVs outside tunnel tubes
*16 ventilation fans

The BOT Concept

The Tate's Cairn Tunnel is a BOT infrastructure project funded 100% by the private sector. The BOT franchise was awarded to the Tate's Cairn Tunnel Company Limited for a period of 30 years by the Hong Kong Government in 1988.

As suggested by the term BOT , the Tate's Cairn Tunnel Company Limited is responsible for the construction and operation of the Tunnel until the end of the franchise period. During the franchise period, the Company is allowed to earn a reasonable but not excessive return through the collection of tolls. On expiration, the tunnel will be transferred to the Government. The statutory requirements to the Company is defined by the Tate's Cairn Tunnel Ordinance.

BOT projects are embodiments of public/private co-operation for a better Hong Kong. To resolve the conflict between the demand for a better road network and the Government's desire to maintain fiscal prudence, private sector participation in transport infrastructure development provides a solution. Flow of private capital through BOT projects allows for rapid improvement of transport infrastructure in Hong Kong without massive public expenditures. Successful public/private cooperation in infrastructural projects enables the development of a better Hong Kong.

In Hong Kong, examples of major road projects built using the BOT model are Tate's Cairn Tunnel, Eastern Harbour Tunnel, Western Harbour Crossing, Route 3 and Cross Harbour Tunnel.

Tai Lam Tunnel

Tai Lam Tunnel is a dual 3-lane tunnel in Hong Kong. The tunnel and its highway connection itself are also known as Route 3 , which is 10.1 km long connecting Au Tau, Yuen Long and Ting Kau, Tsuen Wan. The tunnel is 3.8 km long and is part of the Tsing Long Highway.

The tunnel acts as a major access to the northwest part of New Territories and mainland China from Hong Kong Island and the Kowloon Peninsula. It greatly eases the stress on the overloaded Tuen Mun Road brought by the rapid development of new town of , and , and the drastic growth of traffic on Lok Ma Chau access to mainland China.

Bus services

Kowloon Motor Bus, and Long Win Bus operates bus routes that travel through the Tai Lam Tunnel. Discount is available to passengers travelling between designated bus routes.

* Kowloon Motor Bus: 68M, 68X, 69M, 69P, 69X, 251M, 263M, 264M, 265B, 265M, 265P, 268B, 268C, 269B, 269C, 269D, 269M, 279X, 373A, 968, N269, N368
* Citybus: 967, 967X, 969, 969A, 969B, 969P, 969X, N969
* Long Win Bus: A43, E34, E34P, E34S

Shing Mun Tunnels

Shing Mun Tunnels connects the new towns of Tsuen Wan to the west and Sha Tin in the eastern New Territories of Hong Kong. It is part of . Opened in 1990, it is made up of two sections, rach with twin 2-lane tunnels . The westerly pair passes through Ma Tsz Keng near Shing Mun Reservoir, where it gets its name from; the easterly pair passes through Cham Shan and is linked to the westerly pair by two viaducts over Lower Shing Mun Reservoir. The toll plaza and bus interchange is located outside the Tsuen Wan end of the tunnel.

The tunnel leads to Cheung Pei Shan Road and connects Wo Yi Hop Interchange in Tsuen Wan, and Shing Mun Tunnel Road in the east which links Tai Wai Road and ends at Tai Po Road.

Sha Tin Heights Tunnel

Sha Tin Heights Tunnel is the newest tunnel in Hong Kong. It is part of . The tunnel spanned from a toll plaza in Sha Tin Valley through Sha Tin Heights to Tai Wai. The toll plaza is also connected to Eagle's Nest Tunnel, a tunnel to Cheung Sha Wan and Lai Chi Kok. The Tai Wai entrance is near Pak Shek, with roads connected to Che Kung Mui Road and Tai Po Road. The tunnel toll free and is opened 24 hours a day.

The Sha Tin Heights Tunnel project involves the construction of 0.9km of road tunnel and a toll plaza, along with connecting roads to Road T3 and slip roads to Che Kung Miu Road. The project has an estimated cost of HK$1.308 billion. The excavation of the tunnel was started in November 2002 and completion is scheduled for November 2007-early 2008. The project is being undertaken by the Civil Engineering and Development Department in Hong Kong. The project includes:

*Site formation, drainage, geotechnical and landscape works for the toll plaza
*0.9km of three-lane twin-bore tunnel underneath Sha Tin Heights
*Dual, two-lane at-grade carriageway of 0.7km linking the Sha Tin Heights Tunnel and Road T3
*Slip roads connecting to Che Kung Miu Road
*Construction of noise mitigation measures

Nam Wan Tunnel

Nam Wan Tunnel is a tunnel currently under construction in Hong Kong. The road tunnel, which will form an important part of the HK$15bn Route 8, linking Tsing Yi and Sha Tin in the city, has been under construction since 2003 and is due to be completed by 2007.

The twin-tube tunnel, being built by the Hong Kong Highways Department, will be 1.2km long and have three lanes in either direction in the southern part of Tsing Yi from Sai Tso Wan to Nam Wan Kok. It will provide linkage between the eastern part of the New Territories and Chek Lap Kok International Airport.

On completion, the tunnel will be toll-free. The twin tunnels are 15m wide with 12 cross passages emergency walkways, and a portal building at each end and will be formed by blasting in granite and volcanic rocks.

Nearly all of the 550,000m? of tunnel spoil will be reused in the Penny's Bay reclamation project or processed into aggregates at a local quarry. Spoil will be taken away by a fleet of trucks, one leaving the site every 100 seconds during the working day from 8am to 7pm.

Environmental measures

Environmental measures taken to minimise noise and nuisance to road users and the public include: a 7.5m-tall noise barrier, and continuous monitoring to ensure noise and vibration limits are not exceeded during tunnel blasting; blast doors for any blasting conducted near roads; and 40 water sprinklers and washing facilities at all exits for vehicles to use before leaving the construction site.


The tunnel cross section will be in the form of an arch. The approximate height and width of the arch is 11.2m and 15.3m respectively. The geology comprises coarse volcanic ash tuff on the west side and medium grained granite on the eastern side. Both of these lithologies are intruded by Rhyolite dykes together with some porphyrytic granite and occasional basalt dykes.

The two tubes are being constructed using the drill / blast method. Temporary support for the tunnels will be provided by rock-bolts. Permanent support will be provided by a concrete lining of varying thickness depending upon the stability of the ground.

Three main types of support will be used: 400mm un-reinforced, 500mm un-reinforced, and 600mm reinforced.


Ove Arup and Partners Hong Kong Ltd were the designers of the tunnel and Gammon Skanska and Skanska International Civil Engineering joint venture are the main construction contractors . The contract also covers construction of tunnel control buildings and the 1.4km dual three-lane West Tsing Yi Viaduct.

The cost for the tunnel has been estimated at HK$470m and HK$83 million . Fl?kt Woods is providing the ventilation system for the tunnel.

COWI has provided specialist assistance to Ove Arup and Partners with the design of electrical and mechanical systems for the Nam Wan Tunnel and two adjoining viaducts.


Fl?kt Woods is providing the ventilation solutions by supplying three immense fans for the tunnel. The axial flow fans measure 2.65m in diameter, are powered by 900kW motors and run at pressures of 3,800Pa.

Fl?kt Woods will run one of the fans continuously to self destruct, to prove their capability of withstanding temperatures of up to 400°C for one hour. The fans incorporate guide vanes for flow straightening to achieve maximum performance and will run at 993rpm.

Electrical and Mechanical Systems

In the preliminary design phase of the tunnel COWI established an overall concept for the electrical and mechanical systems with emphasis on safety-related functions such as electric power supply, tunnel lighting, fire fighting, tunnel ventilation and smoke extraction. This overall concept was used as a basis for the detailed design.

Later in the project COWI reviewed the client's detailed design of electrical and mechanical systems.

The electrical and mechanical systems will include the following: high- and low-voltage distribution ; reliable power supply based on UPS and diesel generators; tunnel lighting and road lighting; lighting in portal buildings, technical rooms and cross passages between tunnels; Central Monitoring and Control System ; fire detection system; public mobile communication system; fire fighting equipment, including fire water booster pumps, hydrants and portable extinguishers; tunnel ventilation for normal operation, congested operation and emergency situations ; smoke extraction system; pressurised air supply; HVAC and plumbing in portal buildings.

Lion Rock Tunnel

The Lion Rock Tunnel, being the first tunnel in Hong Kong, is a twin-bored toll tunnel, connecting Sha Tin in the New Territories and New Kowloon near Kowloon Tong. It has two lanes in each direction, with toll booths located at the Sha Tin end. It is a vital component of .

The Lion Rock Tunnel was opened on November 14, 1967, as a 1.43 km dual-one single bore tunnel. The conception of this tunnel is often described as a by-product, as there was a need at that time to build a water supply tunnel through the range of hills separating New Kowloon and the rest of the New Territories, as part of the . The Lion Rock Tunnel was designed by Young Au Young, a civil engineer from Shunde.

The government later saw the need for another road link between New Kowloon and Sha Tin when it decided to develop the latter as a new town. The Second Lion Rock Tunnel, which is 1.41 km long and situated to the west of, and lying parallel to, the old tunnel, was opened to traffic on January 18, 1978.

The new tunnel serves northbound traffic towards Sha Tin, while the old one serves southbound traffic towards Kowloon. Traffic in both directions share one of the tunnels when the other undergoes maintenance works.

Serco Group Limited is contracted to manage, operate and maintain the Lion Rock Tunnel and Kai Tak Tunnel which have a daily total of approximately 90,000 vehicles throughout in 2000. The first contract started in 1993 and was successfully retained in 1996 and 2000 at rebid.

Approximately 100 civil servants from the Transport Department were transferred to Serco Group Limited as part of the company's solution.

In 1999, several Serco Group Limited staff achieved certified trainer status by the Institute of Vehicle Recovery UK - a first for a private company in Hong Kong.

Lion Rock Tunnel has achieved both and OHASA18001 in 2004.
The Lion Rock Tunnel's fare is 8.

Kai Tak Tunnel

Kai Tak Tunnel , formerly known as the Airport Tunnel is a tunnel in New Kowloon, Hong Kong, which connects the Kowloon Bay and To Kwa Wan areas by going beneath the . It is part of . It provides a quick link between the two ends of the tunnel, as before the construction of the tunnel vehicles have to detour through Kowloon City to reach the other end.

Construction of the tunnel started in 1976, but because of the difficulties in digging under the airport runway, it was not complete until 1982. It was known as Kowloon Bay Tunnel at the time of its opening, and it was also the first tunnel in Hong Kong to be toll-free.

With Kai Tak Airport's shutdown in 1998, the Airport Tunnel no longer fulfilled its name. The Hong Kong Government announced on March 2, 2006 that the tunnel be renamed to Kai Tak Tunnel, effective from May 4, 2006, after several years of consultation with groups including the Kowloon City District .

Fourth harbour crossing, Hong Kong

The fourth harbour crossing is being proposed in Hong Kong as the fourth underwater tunnel to cross the Victoria Harbour to ease the traffic through the Cross-Harbour Tunnel. Even though the Western Harbour Crossing, operated by CITIC Pacific Limited, was built for this purpose, the tolls for crossing is double the rates of the Cross-Harbour Tunnel, proving the Western Harbour Crossing ineffective in diverting traffic from the Cross-Harbour Tunnel. Around this time, a new tunnel between North Point and Kowloon Bay was suggested to relief the stress on the Cross-Harbour Tunnel.

However, the Hong Kong government suffered from the East Asian financial crisis in 1997, and all major projects were put on hold. It was not until 2005 that the topic was brought up again, as the Eastern Harbour Crossing announced it would increase its toll prices. It was predicted that 1/3 of traffic from the eastern crossing would use the Cross-Harbour Tunnel instead as a result of the price hike, and the influx would certainly be disastrous for the already overloaded tunnel. The call for a fourth tunnel was revived to counter the problem.

A new proposal stated that the new crossing would be an immersed tube joining a reclamation site off Hung Hom with in Causeway Bay. The toll booths would be placed at the Kowloon end, and would join there. At the Hong Kong Island end there would be a major interchange located under the Victoria Park, connecting with the Island Eastern Corridor. This proposal was deemed the more likely to happen.

Eastern Harbour Crossing

The Eastern Harbour Crossing , abbreviated as "EHC" is a tunnel in Hong Kong. It is a combined road and MTR rail link under Victoria Harbour between Quarry Bay in Hong Kong Island and Cha Kwo Ling in Kowloon.


The Hong Kong Government negotiated with several consortia to adopt the Build-Operate-Transfer model in planning new tunnels in different parts of the city.

In 1986, the government gave New Hong Kong Tunnel the right to run the Tunnel on a 30-year franchise with lease expiring in August 2016. The tunnel features two components, a road part and a rail part:
*The road part of the tunnel is branded as Eastern Harbour Tunnel, although the government refers to the tunnel itself as Eastern Harbour Crossing. The tunnel is governed by the ''Eastern Harbour Crossing Ordinance''.
*The rail part runs between and stations of the MTR . The road part links the Island Eastern Corridor and Kwun Tong Bypass.

The powerful Chinese investment group CITIC Pacific is interested in both parts, controlling the road part and has a 50% stake in the rail part. CITIC also controls 50% of the Western Harbour Tunnel Company.


According to the operator, in 2003, a total number of 26,018,772 vehicles used the Eastern Harbour Tunnel. The average daily throughput was 71,284.

There are many cross-harbour bus routes that travel through the Eastern Harbour Crossing, operated by Kowloon Motor Bus, New World First Bus and .

Detailed bus routes

*Kowloon Motor Bus/New World First Bus: 302, 601, 601P, 641, 680, 680P, 680X, 692, 692P, 802, 811
*Kowloon Motor Bus/: 307, 606, 606P, 619, 619P, 621, 671, 681, 681P, 690, 690P
*Kowloon Motor Bus: 373, 603, 603P, 603S
*: 698R
*New World First Bus: 680A, 682, 682P, 694
*Overnights: N601, N619, N680, N691


In June 2005, CITIC decided to raise the toll for using Eastern Harbour Crossing from HK$15 to HK$25 for private vehicles and up to 67% for other classes of vehicles, under the fare adjustment mechanism derived from the build-operate-transfer model.

The Government of Hong Kong claimed it was powerless to block the toll increase under the BOT model. This has aroused criticisms that the model was detrimental to the public interest, shifting more traffic to the already congested Cross-Harbour Tunnel.

Eagle's Nest Tunnel

Eagle's Nest Tunnel is the newest tunnel in Hong Kong. Officially opened on 21 March 2008, it connects Cheung Sha Wan and Sha Tin Valley through in Hong Kong in anticipation of future traffic demands generated by development in the northeast New Territories. It links south to Stonecutters Bridge and Nam Wan Tunnel, and north to Sha Tin Heights Tunnel to form a series of highways. The tunnel is part of . The toll for private car is HK$8.

The contract for the construction of the Eagle's Nest Tunnel was awarded to a joint venture between Leighton Contractors Limited and Kumagai Gumi Company Ltd. Construction began in October 2003 and the estimated cost of the project is HK$1.84 billion.

The project comprises two 2.1km, three-lane tunnels from Butterfly Valley to Shatin Valley through Eagle's Nest mountain , and all the associated electrical, mechanical and landscaping works that will be necessary. The project is scheduled for completion by April 2007. The full scope of the construction project will include:

*Twin 2.1km, three-lane tunnels
*400m ventilation shaft
*North and south tunnel portal buildings
*Ventilation building off Tai Po Road
*Three-storey administration building
*Toll plaza and toll collection facilities
*500m tunnel approach road
*Miscellaneous earthworks, road works and landscaping
*Electrical and mechanical for both the Eagle's Nest Tunnel and the adjacent, separately constructed, Sha Tin Heights Tunnel

Sandvik Tamrock Corp has supplied five new Tamrock Axera tunnelling jumbos for the Eagle's Nest tunnelling project. The first unit is a Tamrock Axera T08, a two-boom jumbo with basket boom and Tamrock Computer Aided Drilling instrumentation. This unit is used at the ventilation shaft and was delivered in April 2004. The remaining four units are all Tamrock Axera T12DATA - three-boom fully computerised jumbos with basket booms. These units were delivered to the site in summer 2004 and are being used in the main tunnel with two units drilling side-by-side for the cross section area of height 11.8m and width 16.3m.

Discovery Bay Tunnel

The Discovery Bay Tunnel is a toll tunnel that links Discovery Bay Road at Yi Pak Au to Cheung Tung Road at Siu Ho Wan beside the North Lantau Highway. It was built for the Discovery Bay residential development on the north-eastern coast of Lantau Island, Hong Kong.

It is open 24 hours everyday to vehicles approved by the ; including residents' coaches, goods vehicles for goods delivery and servicing functions, and Hong Kong Government vehicles are allowed to use the tunnel. The toll charge ranges between HK$ 50.00 to 250.00 depending on the type of vehicle.

As the development is , private vehicles are discouraged from entering. Private cars or private delivery vans can only enter with special permits issued in advance, between the hours of 09:00 and 18:00 every day.

The tunnel is managed by HKR International Limited.

Cross-Harbour Tunnel

The Cross-Harbour Tunnel (abbr. ''CHT'' or ''XHT''; is the first tunnel in Hong Kong built under water. Since its construction, its traffic has increased, becoming one of the most congested roads in Hong Kong and the world.


Constructed by a private company and operated under a 30-year franchise, the 1.8 km-long tunnel crossing opened in 1972, providing the first road link between Kowloon and Hong Kong Island; Cross-harbour vehicular traffic depended on ferries before the tunnel was built.

The tunnel links the main financial and commercial districts on both sides of Victoria Harbour, connecting Kellett Island , Hong Kong Island with a reclaimed site at Hung Hom Bay, Kowloon. The toll plaza is located at the Hung Hom end of the tunnel, and has 14 toll booths.

It was administered by The Cross-Harbour Tunnel Company Ltd until August 1999, when the operation franchise agreement expired and the government assumed control.

Continued congestion

Although other road tunnels, the Eastern Harbour Crossing and Western Harbour Crossing, have been built across the Victoria Harbour to divert traffic from the Cross-Harbour Tunnel, traffic congestion has not improved. Two reasons include the less convenient locations of the other two tunnels compared with the Cross-Harbour Tunnel, and more importantly the control of new tunnels by the powerful CITIC Pacific. The tolls for crossing each of the other two tunnels are significantly higher, and were further increased in 2005 by up to 67% to boost investment returns.

The Government of Hong Kong claimed it was powerless to prevent the sharp increase in tolls, and is currently looking at other options to relieve the traffic, including a plan to build a . Although it encourages motorists to use public buses but does not give buses priority access to the tunnel and strongly encourages taking MTR East Rail Line and then switching to MTR Tsuen Wan Line at East Tsim Sha Tsui Station.


Bus routes that pass through the tunnel:
*Kowloon Motor Bus/New World First Bus: 101, 101R, 102R, 104, 106, 106P, 109, 110, 111, 112, 113, 115, 115P, 116, 301, 305
*Kowloon Motor Bus/: 102, 102P, 103, 107, 107P, 117, 118, 118P, 170, 171, 171P, 182, 182P, 807
*Kowloon Motor Bus: 108, 336
*Overnights: N11, N118, N121, N122, N170, N171, N182, N368

Cheung Tsing Tunnel

Cheung Tsing Tunnel or Cheung Ching Tunnel is a dual tube 3-lane tunnel on Tsing Yi Island, Hong Kong. It is part of Tsing Kwai Highway of . Its east end connects to Rambler Channel Bridge and west Cheung Tsing Highway. The tunnel was opened on 1997-05-22 and is the second toll-free tunnel in Hong Kong. Its length is about 1.6 kilometres.


The tunnel was given the name "Cheung Ching" because it is beneath Cheung Ching Estate, the first public housing estate on the island.

Construction through the granite of Tsing Yi Peak, required explosives to get through hardness of the hill. To prevent dislodging of rocks and buildings on the surface slopes the rocks were reinforced by concrete and steel. Although the tunnel used explosives in its construction, boring was more used as the primary digging procedure.


The tunnel was managed by Tsing Ma Management Limited under Tsing Ma Control Area, along with Tsing Ma Bridge, Kap Shui Mun Bridge, Ting Kau Bridge, Rambler Channel Bridge, North Lantau Highway and Tsing Kwai Highway.

The traffic of the tunnel is monitored in the buildings at both end, namely East Portal and West Portal Buildings.

Beacon Hill Tunnel

Beacon Hill Tunnel is a tunnel in Hong Kong, on the original Kowloon-Canton Railway from Kowloon to , linking Kowloon Tong to its south and Sha Tin to its north, between and stations. Services through the tunnel are provided by MTR.


A team of were commissioned to survey the route for the KCR British Section in 1905. Two routes have been proposed:
#Construction of a tunnel 1.5 long through then following the west coast of Tolo Harbour
#Routing through Western New Territories and Castle Peak Bay
Although option 2 is less technically challenging, the route is too long and goes through less active areas; therefore option 1 was selected. Works on the to the boarder started early 1906. Construction of the tunnel, referred to as Tunnel No.2 in the plan since it was the second tunnel starting from Kowloon, was the greatest engineering project in Asia of its time.

The tunnel opened with rest of the line in October 1910, together with four smaller tunnels. It accommodated a single standard track with a standard gauge of . It has, however, been notorious for its fume problems throughout its operating life; due to its steep of 1%.

A double tracked, tunnel was built to the immediate west of the original one as part of a modernisation plan starting in 1978, now used by the . The original tunnel was closed upon completion of the new tunnel. It is now occupied by town gas facilities.

Aberdeen Tunnel

Aberdeen Tunnel is a two-tube tunnel linking and Wong Chuk Hang near on the Hong Kong Island, Hong Kong. It shortens the travel time between the north and the south of the Hong Kong Island. Part of , it connects the Wong Chuk Hang Road in the south, and in the north. The toll plaza - incidentally, the only toll plaza on Hong Kong Island - is at the Wong Chuk Hang end.
The toll is HK$5. The tunnel is 1.9 kilometres long and was used by 57,400 vehicles daily in 1999.

Bus Routes

Bus routes that go via the tunnel:
*New World First Bus: 38, 42, 590A, M590
*Citybus: 37A, 70, 70M, 72, 72A, 75, 77, 90, 90C, 92, 96, 97, 99, 107, 107P, 170, 171, 171P, 592, 629, 629S, 671, 6X, 260
*Citybus Overnight routes: N72, N90, N170, N171
*Public light bus: 40

Underground Laboratory

An between the two tunnel tubes was appended by the University of Hong Kong during construction. The laboratory facilitates particle physics research.