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Sungai Buloh-Kajang (SBK) Line, Malaysia




Key Data


Malaysian rail

The Sungai Buloh - Kajang (SBK) Line is a 51km long rail line that will connect Sungai Buloh, north-west of Kuala Lumpur, with Kajang in the south-east, while passing through the densely populated centre of the federal capital.

SBK Line is part of the Klang Valley mass rapid transit project announced by the Government of Malaysia in December 2010.

It will be owned by the Government of Malaysia through Syarikat Prasarana Negara Berhad (Prasarana) and operated by RapidKL, a subsidiary of Prasarana.

Suruhanjaya Pengangkutan Awam Darat (SPAD) / Land Public Transport Commission is the supervisory agency for the project.

The line will serve 1.2 million people in the Klang Valley who currently do not have an adequate rail network. There is less than 20km of rail per million people, as opposed to 40km of rail per million people in public transport oriented countries, such as Singapore, Hong Kong and London.

Along with integrated bus services, the new line is expected to increase the use of public transport from 17% in 2011 to 50% in 2020. The expected ridership of the line is 442,000 passengers a day.

Funded by the government, the project witnessed commencement of construction in April 2012. It is scheduled to be completed in 2016 and commence operations in January 2017.

Sungai Buloh-Kajang Line details

"SBK Line is part of the Klang Valley mass rapid transit project announced by the Government of Malaysia in December 2010."

The SBK alignment was proposed many times with different transport options. It was first proposed in 2006 by Prasarana, and again in 2008 as a part of the Kuala Lumpur draft city plan to create rapid bus transport.

Feasibility studies carried out since first proposals revealed the bus transport could not address the growing traffic congestion, and proved to be costly when combined with rising petrol prices.

The alignment was subsequently proposed in July 2010 as an MRT system under the Greater Kuala Lumpur / Klang Valley national key economic area (NKEA). It was approved as the commuter train was economically feasible and could effectively tackle the traffic issues.

The final alignment was revealed by the government in July 2011, three months after the public consultation. It was drawn with an objective to minimise social and environmental impacts of the project.

The new alignment resulted in the removal of four stations from the original plan of 35 stations and reduced the land acquisitions from 100 to 40 buildings in the southern region. The four stations will be considered in future, depending on the passenger demands.

The SBK line will be constructed on a project delivery partner (PDP) model to eliminate the risk of cost and time overrun and also to have a single point of accountability.

A 50/50 joint venture of Malaysia-based investment holding company MMC and infrastructure group Gamuda was appointed as the PDP in early 2011.

The project's cost-benefit analysis was done by McKinsey. It is expected to generate around RM3 to 4bn ($1.34bn to $1.68bn) revenue a year in the first five years of its operation.

Infrastructure of Malaysia's SBK Line

The route will contain 9.5km of underground railway in the city centre and the remaining on the surface.

There will be eight underground stations, of which four will serve as interchanges connecting the KTM Komuter Line, Ampang LRT Line and the Kelana Jaya LRT Line. The Sungai Buloh railway station will be designed based on the Bandar Tasik Selatan interchange station of the KTM Komuter and Ampang Line.

The SBK MRT line will allow passengers to shift from MRT system to monorail at Bukit Bintang central station, located at the centre of Kuala Lumpur. The central station was formed by consolidating Bukit Bintang east and west stations.

Trains will travel at head way of 3.5 minutes during peak hours.

They will operate at a speed of 35km/h and cover the distance between Sungai Buloh and Kajang in 88 minutes.

Rolling stock on the public transport rail lines

A fleet of 58 trains will run on the SBK line. Each train will have four carriages carrying a maximum of 300 passengers in each carriage.

Contractors involved with the Sungai Buloh - Kajang project

Engineering, Procurement, Construction, and Testing & Commissioning (EPCTC) contracts for the transit system were awarded in October 2012. The contracts were divided into seven packages.

"The line will serve 1.2 million people in the Klang Valley who currently do not have an adequate rail network."

Packages one and two were awarded to a consortium of Siemens Malaysia and SMH Rail. The consortium is responsible for providing electric trains, depot equipment and maintenance vehicles.

Bombardier provided signalling and train control system under package three.

Power Supply & Distribution System is provided by Meidensha Corporation under package five. The $274m package six has been awarded to Mitsubishi Heavy Industries to perform the track works for the transit system. A consortium of Apex Communication and LG CNS received the package seven contract to provide telecommunication system.

The MRT awarded a $25m contract to ST Electronics to provide platform screen door systems for the rail line in April 2013.

A joint venture of Alcatel-Lucent and CMC Engineering won a contract to provide advanced communication system for the light rail network extension project in March 2013.


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The SBK Line is a proposed 51km long rail line that will connect Sungai Buloh with Kanjang.
SBK Line is part of the Klang Valley mass rapid transit project announced in 2010.
Along with integrated bus services, the new line is expected to increase the use of public transport.