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MRT Laluan Sungai Buloh-Kajang
The MRT Sungai Buloh–Kajang line, or known as SBK Line, is the ninth rail transit line and the second fully automated and driverless rail system in the Klang Valley area, Malaysia after the. It is a part of Klang Valley Integrated Transit System. The line is numbered and Green  on official transit maps.

Ianya adalah salah satu daripada tiga kereta api yang dirancang di bawah Projek Transit Aliran Massa Lembah Klang oleh Perbadanan MRT. Fasa 1 antara Sungai Buloh dan Semantan memulakan perkhidmatan pada 16 Disember 2016. Fasa 2 antara Muzium Negara dan Kajang telah dibuka pada 17 Julai 2017, sebagai perkhidmatan ulang-alik percuma, oleh bekasPerdana Menteri Malaysia, Dato' Seri Najib Tun Razak dalam sebuah majlis di stesen Tun Razak Perkhidmatan pendapatan penuh antara Sungai Buloh dan Kajang bermula hari berikutnya.

Cadangan permulaan LRT
Pada Ogos 2006, Laluan cadangan LRT Kota Damansara-Cheras (Kota Damansara) pertama kali diperkenalkan kepada orang ramai oleh timbalan Perdana Menteri, Datuk Seri Najib Tun Razak di bawah peruntukan kerajaan RM10 bilion untuk peningkatan dan pengembangan rangkaian pengangkutan awam di Lembah Klang. Laluan tersebut juga disasarkan untuk mengurangkan kesesakan lalu lintas di Lembah Klang dengan menggalakan lebih banyak penumpang untuk memilih pengangkutan awam. It is also aimed to reduce overcrowding on the KL Monorail Line and provide an alternative transport mode due to rising fuel prices. It is estimated to be approximately 30km in length. This is planned in-line with the extension of the LRT Kelana Jaya Line, and Ampang and Sri Petaling Lines (formerly known as PUTRA and STAR LRT respectively), to USJ and Puchong respectively and converging at Putra Heights. The combined cost of the new line and the proposed extensions were estimated at RM7 billion. Syarikat Prasarana Nasional Berhad (SPNB) was in charge of the construction of these lines. The Kota Damansara line was planned to be served by 140 coaches, and the track gauge to be almost similar to existing LRT lines. The Ministry of Transport had approved the alignment of the new line in July 2007 which would then be tabled to the Cabinet for approval. The Finance Ministry Parliamentary Secretary announced that the line from Kota Damansara to Cheras and Balakong would be completed by 2012. The line would be 40km long, serving densely populated areas in Damansara and Cheras via "The Golden Triangle" of Kuala Lumpur city. The alignment was to be from Persiaran Surian to the Balakong Interchange on the Cheras—Kajang Expressway, passing through the Damansara—Puchong Expressway, Sprint Highway, the city, Jalan Tun Razak and Jalan Cheras, stopping at around 30 stations. Ownership of the line belongs to SPNB, and would be operated by RapidKL. The estimated construction cost is between RM4 billion and RM5 billion.

In September 2008, Executive Director of SPNB said that a 5.9 km section of the line in Central Kuala Lumpur will be underground, serving 5 stations. However, the locations of underground stations were not announced. It was during this time that the line was said to be 42 km with 32 stations in total, which would serve areas of Bandar Utama, Bangsar, KL Sentral, Bukit Bintang, Bandar Tasik Selatan and Cheras. The line was being considered for as a Mass Rapid Transit system after taking into consideration the catchment area serving a population of 878,000. It was also reported that the detailed design stage for the line would commence in the second quarter of 2009 and the opening date is expected to be in 2014.

New alignment and conversion to MRT
On 14 September 2009, SPNB managing director Datuk Idrose Mohamed was reported as saying that the new line could end up longer than the earlier announced alignment although he did not offer any further details. A public display of the alignment was launched a day after the announcement. SPNB has raised the necessary funds from Islamic investments of RM2 billion and hopes to gain approval from the Ministry of Transport to call out for tenders. In April 2010, a proposal to extend the line by 16 km was being studied by the government. The proposal includes extensions from Kota Damansara to Sungai Buloh (additional 3 km) and from Cheras to Kajang (additional 9 km). This is to provide convenient interchanges to the existing Keretapi Tanah Melayu Berhad (KTMB) stations at Sungai Buloh and Kajang, as well as supporting the upcoming development of some 3000–acre land in Sungai Buloh. An additional branch line from Damansara Utama to Kelana Jaya (additional 4 km) aimed to relieve congestion on the Lebuhraya Damansara—Puchong (LDP) Highway was also being studied, bringing the total length of the line to 59 km.

Unofficial statements in 2009 claimed that the proposed line was changed to an MRT line. In June 2010, during the tabling of the 10th Malaysia Plan, Prime Minister Najib Tun Razak announced that the government was now considering a RM36 billion Klang Valley MRT proposal from Gamuda Berhad and MMC Corporation Berhad, which is the largest national infrastructure project. The proposal includes 3 lines, including one which is similar to the Kota Damansara—Cheras proposal. The MRT lines were to be mostly underground with stations 500m to 1km apart in areas with high demand. The concept is similar to the Singapore and Hong Kong mass rapid transit systems. The project, aimed to improve public transport in the Klang Valley, was approved by the Malaysian cabinet on 17 December 2010 and construction of the first line from Sungai Buloh to Kajang would begin in July 2011 with a duration of five to six years. Gross national income from these future lines is between RM3 bil and RM12 bil. The government had appointed MMC-Gamuda JV Sdn Bhd as Project Delivery Partner where it would play the role project manager, supervised by the Land Public Transport Commission (SPAD). The whole project would be divided into nine parcels in which will be done on open tender basis. 10 km of the line would be underground and the remaining 50 km above ground with 35 new stations. MMC-Gamuda would be barred from bidding for any tender except for tunnelling works (the most expensive portion). Ownership of the lines would be given to SPNB.

To seek for further consultation from the public, SPAD held a 3-month public display of the alignment of the MRT Sungai Buloh-Kajang Line. On 8 July 2011, Razak officially launched the project. The final alignment was adjusted following the public display, having a length of 51 km with 31 stations where 16 have Park and Ride facilities. Construction was said to be completed in December 2016 and the line would start operations a month after. On 17 August 2011, the government announced that Mass Rapid Transit Corporation Sdn Bhd (MRT Corp), a new company under the Finance Ministry had been formed to take control of the project from Prasarana. MRT Corp would be the asset owner of the project and officially take over the project from Prasarana on 1 September 2011. After the MRT project was formally launched on 8 July 2011, the following amendments have been made to the original proposed alignment following the public display exercise between March and May 2011:
 * 31 stations instead of 35 stations will be built and provisions have been made for 3 more stations
 * Future station 1 (RRI) located between Kampung Selamat and Kwasa Damansara stations
 * Future station 2 (Teknologi) located between Kwasa Sentral and Kota Damansara stations
 * Future station 3 (Bukit Kiara) located between Phileo Damansara and Pusat Bandar Damansara stations
 * Construction of Taman Mesra station has been shelved.
 * The proposed Section 17 station was dropped
 * The location of the proposed TTDI station was moved around 300m southwards to the former Caltex petrol stations. This was due to complaints from Taman Tun Dr Ismail and Damansara Kim residents.
 * Bukit Bintang East and West stations have been combined into one, moved and integrated with KL Monorail station. The station was named Bukit Bintang Central Station and subsequently Bukit Bintang Station.
 * Park and Ride facilities has been increased to 16 from 13 previously.
 * Adjustments to the alignment:
 * Shifting alignment into the former Rubber Research Institute of Malaysia land in Sungai Buloh to cater for future development
 * Adjusting the alignment adjacent to Bandar Kajang station to avoid going through the town centre and through Kajang Stadium.

Contract Allocation
On 21 October 2011, MRT Corp shortlisted 5 companies to construct the underground parts of the line including MMC Gamuda Joint Venture and Sinohydro Group. On 26 January 2012, MRT Corp announced the award of the first two civil works contracts for the construction of the MRT Sungai Buloh–Kajang line. IJM Construction Sdn Bhd was appointed the contractor for Package V5 at a tender price of RM974 million, while Ahmad Zaki Sdn Bhd was appointed the contractor for Package V6 at a tender price of RM764 million. Package V5 is from the Maluri portal to Plaza Phoenix (now Taman Connaught) station while Package V6 covers the section between Plaza Phoenix and Bandar Tun Hussein Onn stations. MRT Corp announced the pre-qualification of 28 companies to bid for six System Works Packages for the MRT line on 8 March 2012. Subsequently, in September 2012, another 31 companies were pre-qualified to bid for the remaining five System Works Packages.

Pembinaan
All stations are to be equipped with platform screen doors, where this contract was awarded to the Singaporean company Singapore Technology Electronics Ltd. 33kV Main Switching Substations are to be constructed at 4 stations, namely Taman Industri Sungai Buloh (now Kwasa Sentral), Section 16 (now Phileo Damansara), Taman Cuepacs (now Sri Raya) and Kajang stations. The other 3 substations are added at the Cochrane launch shaft, Sungai Buloh depot and Semantan portal. Two more 132/33kV Transmission Main Intakes are constructed at Cochrane Launch shaft and Semantan portal. Tenaga Nasional Berhad (TNB) agreed to supply 116.5MW of power on the SBK line which costs RM173.1 million.

On 1 November 2011, the 70's Klang bus stand ceased operations and was demolished to make way for the underground platforms and new entrances of Pasar Seni station. When construction of the station is completed, a new bus hub will be reconstructed. On 1 August 2012, MRT Corp announced that the project was in active construction phase. MRT Corp said that the project cost would not exceed the limit of RM23 billion. The first section between Sungai Buloh and Semantan was expected to open in December 2016, with the entire line opening in July 2017.

On 30 May 2013, tunnel excavation works for the MRT Sungai Buloh–Kajang Line began with the world's first Variable Density Tunnel Boring Machine (VDTBM). This TBM was jointly designed by MMC Gamuda KVMRT Tunnelling and Herrenknecht AG, a German company. Commencement of tunnelling works was launched by former Malaysian Prime Minister Najib Tun Razak at the Cochrane Launch Shaft, which would later become the Cochrane MRT station. The shaft is 30 m deep and this TBM was to dig a distance of 1.2km towards Pasar Rakyat (now Tun Razak Exchange) station. 10 TBMs were used to construct the 9.5 km tunnelled section of the line, where 6 are Variable Density and 4 are Earth Pressure Balance TBMs. The tunnels are to have a diameter of 6 m, where the first breakthrough of the TBM excavations occurred on 25 December 2013.

Opening
On 2 September 2016, Prime Minister Najib Tun Razak took a surprise visit on the MRT line. He took a return trip from Semantan station to Phileo Damansara station in which he visited the latter.

On 16 December 2016, Phase 1 of the SBK line which spans 23 km from Sungai Buloh to Semantan opened, with stations at: The fare of this part of the line and its feeder bus routes was free of charge until 16 January 2017. Two days later, MRT Corp confirms cost of 51 km of SBK line would be RM21 billion.
 * Sungai Buloh
 * Kampung Selamat
 * Kwasa Damansara
 * Kwasa Sentral
 * Kota Damansara
 * Surian
 * Mutiara Damansara
 * Bandar Utama
 * TTDI
 * Phileo Damansara
 * Pusat Bandar Damansara
 * Semantan
 * 17 July 2017: Phase Two of the line from Semantan MRT station to Kajang station began operations.

The line is operated by a subsidiary of Prasarana Malaysia Berhad, Rapid Rail Sdn Bhd, which already runs the Ampang Line, the Kelana Jaya Line and KL Monorail.

Perjalanan
The first MRT line covers a span of 51 kilometres from Sungai Buloh to the Kajang, passing the Kuala Lumpur city centre where the alignment goes underground. The line will be serving a corridor with 1.2 million residents within the Klang Valley region from north-west to the south-east of Kuala Lumpur. The line starts from Sungai Buloh which is located to the north-west of Kuala Lumpur, which runs on an elevated guideway to the Semantan portal, passing through Kota Damansara, Bandar Utama, Seksyen 17 and Damansara Town Centre. Kwasa Damansara provides cross-platform interchange between the SBK line and Sungai Buloh–Serdang–Putrajaya line (SSP line). The line continues in twin-bore tunnels to the Maluri portal, passing through the city centre and the Golden Triangle of Kuala Lumpur. Interchange to other lines is provided from Muzium Negara to Maluri with the exception of Cochrane in the Kuala Lumpur city. Beyond Taman Pertama, the line passes through Cheras and ends in Kajang via an elevated guideway. The line serves a corridor with an estimated population of 1.2 million people.

Reka bentuk Stesen
Stesen bertingkat mempunyai struktur berdasarkan wakaf, iaitu merupakan pavilion tradisional di Malaysia digunakan sebagai pondok rehat. Seperti wakaf, stesen sampingan yang terbuka membenarkan cahaya semulajadi ke dalam platform dan menyediakan pengudaraan. Untuk tujuh stesen bawah tanah, inspirasi keseluruhan adalah daripada Gerbang Kuarza Klang. Ianya adalah kuarza tulen yang dijumpai di Lembah Klang yang mempunyai ciri-ciri yang pelbagai dan mempunyai refleksi kaleidoskopik. Ciri-ciri ini menyerupai pelbagai kaum di Malaysia, pelbagai budaya dan masyarakat progresif. Konsep ini digunakan dalam reka bentuk mural yang berbeza. Muzium Negara dipasang dengan jubin yang menggambarkan peralihan mod pengangkutan awam bandar manakala Pasar Seni dicat dengan 'Y', yang mewakili penumpuan sungai Klang dan Gombak. Merdeka mempunyai Rukun Negara dicetak di dinding koneksi. Tun Razak Exchange (TRX) mempunyai reka bentuk biru dan motif kelabu yang merupakan tema Korporat Islamik yang moden. Cochrane mempunyai warna harmoni merah ke kuning manakala Bukit Bintang mempunyai corak merah bertenaga. Stesen Maluri dipenuhi dengan jubin hijau terang, biru dan kuning yang melambangkan pembaharuan bandar.

Semua stesen kerusi roda boleh diakses, dengan lif dan eskalator melayani setiap platform.

Perkhidmatan dan Stok Rolling
Menurut pada Perbadanan MRT, the four-car train sets are servicing the line with an average headway of 3.5 minutes in an hour, equivalent to 400,000 passengers per day.

The rolling stock is manufactured by Siemens/CSR Nanjing Puzhen in a partnership with SMH Rail Consortium Sdn Bhd. The trains will be driverless with a capacity of 1,200 passengers in a 4-car trainsets formation. The Siemens Inspiro rolling stock will be supplied with the same configuration as the trainsets supplied for Warsaw Metro M1.


 * 29 June 2014: The first two train car bodies arrived in Westport, Port Klang, Selangor. The train will be assembled in the country’s first train assembly plant in Rasa, Hulu Selangor. The purpose built plant for the KVMRT project is solely owned and operated by SMH Rail Sdn Bhd. SMH Rail had a consortium partnership with Siemens AG and Siemens Malaysia. Work to assemble the trains began immediately after the first two train car bodies arrived in Westport. The time taken to assemble one train set is about 30 days. The plant has two assembly lines, allowing work on four trains sets to be carried out at the same time.
 * 30 November 2014: Another 14 train car bodies had arrived.

Car length (over coupler): 18.6 m to 20.1 m

Number of passenger doors per car side / door width: 4 / 1400 mm

Traction power supply: 750 VDC, 3rd rail

The 4-car trainsets are maintained at 2 purpose built facilities, Sungai Buloh and Kajang depots, located nearby Kwasa Damansara and Sungai Jernih stations respectively.

In the second quarter of 2018, the ridership is a little short of 12 million, where an overall rising trend is followed. However, the line is deemed to have inadequate ridership to cover the construction, operation and maintenance costs. The target of 250,000 passengers on a daily basis is to be met to prevent a loss in operation.

Depoh
Terdapat dua penyelenggaran depoh untuk Laluan SBK, iaitu depoh Sungai Buloh dan depoh Kajang. Bekas yang boleh diakses oleh keretapi ke arah utara stesen Kwasa Damansara, manakala yang kedua terletak berhampiran Sungai Jernih, di mana tren mengakses depoh daripada Bukit Dukung sebaliknya. Sehingga tahun 2015, depoh Sungai Buloh dianggap sebagai depoh terbesar di Asia Tenggara, Di mana ia boleh menampung 58 tren mengkhidmat laluan tersebut.

MRT Laluan Sungai Buloh-Serdang-Putrajaya
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2.93137] }, "properties": { "title": "SSP36 Putrajaya Sentral", "marker-symbol": "rail-metro", "marker-size": "small", "marker-color": "ffcc00" } }, ] The MRT Sungai Buloh–Serdang–Putrajaya line (MRT SSP)  will be the twelfth rail transit line, the fourth fully automated and driverless rail system in Klang Valley area. It is a part of the larger rail transport system in Kuala Lumpur known as Greater KL/Klang Valley Integrated Transit System. The line is numbered 12 and coloured gold on transit map.

It is one of three planned MRT rail lines under Klang Valley Mass Rapid Transit Project by MRT Corp. The Phase 1 between Kwasa Damansara and Kampung Batu expected to be operational by July 2021. The remaining line is expected to be operational in 2022.

The approved rail alignment is 52.2km in length, of which 13.5km is underground. A total of 37 stations, 11 of them underground, will be built. The line will stretch from Sungai Buloh to Putrajaya and will include densely populated areas Sri Damansara, Kepong, Batu, Jalan Sultan Azlan Shah, Jalan Tun Razak, KLCC, Tun Razak Exchange, Kuchai Lama, Seri Kembangan and Cyberjaya. It is expected to have a ridership of 533,000 passengers per day once completed.

Kronologi

 * 13 October 2014 – The 2nd MRT line is now planned to be from Sungai Buloh, Selayang to Pandan; instead of from Kuala Lumpur to Port Klang.
 * 3 December 2014 – During a briefing of the 1st MRT line, the MRT CEO revealed more details about the 2nd line. He had said that the line will be 59.5 km long with 49.3 km will be elevated and 10.2 km will be underground. There will be 40 stations where 31 will be elevated and 9 will be underground. Construction is expected to begin by November 2015 will approval and public discussion starts in early 2015.
 * 12 February 2015 – MRT Corp prepares tender for MRT2, project display in Q2.
 * 16 March 2015 – MRT2 from Sungai Buloh to Putrajaya has been approved by the Federal government. The project was allocated RM23 billion in the Budget 2015.
 * 2 April 2015 – New alignment for MRT2 proposed. The alignment south of Tun Razak Exchange was then altered drastically to provide connectivity with the proposed High Speed Rail project. With this revision, the line stands at 52.2 km long with a total of 36 stations. Of these, 11 are underground while 25 are elevated.
 * 22 April 2015 – Department of Environment (DOE)'s Detailed Environment Impact Assessment (DEIA) for MRT2 (SSP Line) (Sungai Buloh-Serdang-Putrajaya Line) is available for download from their website.
 * 14 May 2015 – Details of MRT2 project on public display start on 15 May 2015. The public can visit the SPAD office, MRT Corp offices, Kuala Lumpur City Hall, Selayang Municipal Council and Petaling Jaya City Council, with roadshows, primarily at shopping malls near the MRT2 alignment.
 * 12 August 2016 – On the MRT2 project, the groundbreaking ceremony was expected to be held at end of the month of August 2016 or early September 2016.
 * 15 September 2016 – Construction on the SSP line launched with a groundbreaking ceremony at the site of the future Putrajaya Sentral MRT station by former Prime Minister Dato' Seri Najib Tun Razak.
 * 31 March 2017 – The line is 5.3% completed.
 * 24 May 2017 – 7.5% of the line was completed. For the elevated section, progress of the first and second packages are at 20.9% and 10.3% respectively with increased works being seen from Jalan Kuala Selangor to Jalan Kepong. Whereas for underground works, the work progress was at 8.7%.
 * June 2017 – The line is 10.25% completed, based on the video released by MRT Corp in 18 December 2017.
 * 5 September 2017 – The line has reached the completion of 12.05% and expected to reach 19% by the end of 2017. The underground works will commence by the first quarter of 2018 with the arrival of 2 Tunnel Boring Machine (TBMs) within 2-3 weeks and another 2 of them by early next year.
 * 26 September 2017 – The project director Datuk Amiruddin Ma’aris mentioned the line is currently achieved completion of 13.70%.
 * 28 September 2017 – According to the MRT Corp director of underground works for the SSP line, Blaise Mark Pearce, 23% of the underground works for the SSP Line were expected to be completed by the end of 2017.
 * 10 October 2017 – An explosion has occurred at the Mass Rapid Transit (MRT) station construction site in Bandar Malaysia. According to the police, it was believed that the explosion happened because of an old unexploded bomb from the Second World War through the initial investigation. Three Bangladesh workers were seriously injured and two of them lost their legs while another suffered injuries on the hands and legs.
 * 13 October 2017 – Mass Rapid Transit Corporation Sdn Bhd (MRT Corp) has won the prestigious “Be Inspired Awards 2017” for its use of Building Information Modelling (BIM) in the construction of MRT Sungai Buloh-Serdang-Putrajaya (SSP) Line.
 * 13 November 2017 – The first Tunnel Boring Machine arrived in Port Klang and delivered to site. The rest are expected to arrive in coming weeks.
 * 18 December 2017 – MRT Corp released a video describing the progress of the SSP line from 2016 to 2017 in YouTube. The progress is described in packages. The progress statistics are: 23.68%, 15.43%, 9.05%, 10.32%, 35.31% and 11.51% respectively for packages V201, V202, V203, V210, Serdang Depot and underground.
 * 1 January 2018 – Malaysia's 1st shopping mall, Ampang Park, is officially ceased its operation in order to make way to the construction of the Ampang Park station under such line.
 * 18 February 2018 – The line has achieved 21% completion. The final Tunnel Boring Machine for the SSP Line is expected to be launched by mid-2019.
 * 1 March 2018 – Underground works commenced with the first Tunnel Boring Machine. The launching is done at the shaft located at the Bandar Malaysia North MRT station. The line has achieved 22% completion according to the CEO of the MRT Corp, Datuk Seri Shahril Mokhtar.
 * 3 March 2018 – A construction worker died while two others survived when a launching gantry at an MRT construction site in Jalan Jinjang (Work Package V203), collapsed at around 11:40pm.
 * 23 April 2018 – The Director of Strategic Communications and Stakeholder Relations from MRT Corp, Dato' Najmuddin Abdullah, says the line is now completed at the progress of more than 24%.
 * June 2018 – The line is 30% completed, based on the video released by MRT Corp in 9 December 2018.
 * 11 July 2018 – The line was close to 30% complete as at early July, according to the project director Datuk Amiruddin Ma’aris.
 * 8 October 2018 – The Finance Minister, Lim Guan Eng announced the decision to change the project structure as well as terminate the contract from MMC-Gamuda and re-tender the unfinished underground portion of the project by an open tender process, due to the fact the Federal Government and MMC-Gamuda have failed to reach an agreement relating to the underground portion of the construction project. This decision had caused a lot of protests from MMC-Gamuda and workers due to the fact that some 20,000 workers tend to lose their job.
 * 9 October 2018 – The shares of MMC and Gamuda fell due to the government's decision to terminate the underground section project.
 * 10 October 2018 – The Prime Minister, Tun Dr. Mahathir Mohamad told the press that the decision to cancel the contract from MMC-Gamuda for the underground portion will be reconsidered.
 * 11 October 2018 – The Economic Affairs' Minister, Dato' Seri Azmin Ali confirmed that the Cabinet has set up a committee to review the underground contract that was awarded to MMC-Gamuda for the project. According to the source, the four members of the committee are Minister of Finance Lim Guan Eng, Minister of Works Baru Bian, Transport Minister Anthony Loke and Economic Affairs Minister Azmin Ali.
 * 17 October 2018 – The Finance Minister, Lim Guan Eng said the decision to terminate the contract was Cabinet's decision.
 * 26 October 2018 – Due to budget concerns, and a re-tender, construction costs proposed by MMC-Gamuda is about half what it was previously. The two Bandar Malaysia Stations have also been cancelled. The cost for construction of the underground portion is now RM13.11 billion. This brought to the entire cost for this project to be RM30.53 billion from the RM39.35 billion previously. This means MMC-Gamuda now secured the contract of the underground section and allowed to continue the construction.
 * 13 November 2018 – Three MRT stations from the MRT Sungai Buloh-Kajang Line (Sungai Buloh, Kampung Selamat and Kwasa Damansara) closed for two days to accommodate the first migration system works of the line.
 * 9 December 2018 – MRT Corp released another video describing the progress of the SSP line from 2017 to 2018 in YouTube. The progress is described in packages. The progress for all packages have been mentioned. Package V201 achieved the highest progress with 45.7% whilst package V206 achieve the lowest progress with 13.1%. Underground section had the progress with 33.3%.
 * 24 January 2019 – The first batch of carriages for the two sets of trains have arrived at Westport, Port Klang.
 * 29 January 2019 – First TBM breakthrough happened at Chan Sow Lin station. The TBM was bored between Bandar Malaysia North and Chan Sow Lin. MRT Corp Sdn Bhd strategic communica­tions and stakeholder relations director,  Datuk Najmuddin Abdullah said the overall construction was on track with a 41% completion rate as of December 2018.
 * 9 March 2019 – Three MRT stations from the MRT Sungai Buloh-Kajang Line (Sungai Buloh, Kampung Selamat and Kwasa Damansara) closed again for two days to accommodate the second migration system works of the line.
 * 15 March 2019 – Second TBM breakthrough at Chan Sow Lin station based on the Instagram source from Datuk Najmuddin Abdullah.

Stesen
=== Konsep stesen bertingkat === Reka bentuk yang dicadangkan untuk stesen bertingkat adalah berdasarkan pada konsep "Serambi". Konsep ini tertumpu pada interaksi yang memberi inspirasi/komunikasi di lobi/ ruang masuk rumah, dewan,.i.e. ruang masuk di “rumah kampung” atau “rumah panjang”. Reka bentuk yang dipilih adalah mudah. reka bentuk abadi: yang diperoleh daripada pelbagai konsep reka bentuk, termasuk konsep "zen". Aspek lain termasuk ruang terbuka, pencahayaan semulajadi dan pengudaraan, dan kesan visual semulajadi melalui permainan pencahayaan dan bayang-bayang.

Berbanding dengan reka bentuk stesen bertingkat Laluan Sungai Buloh-Kajang (SBK), lajur telah ditolak ke sisi stesen, memberi stesen rasa yang terbuka dan lapang.

Konsep stesen bawah tanah
Sedangkan untuk stesen bawah tanah, masing-masing daripadanya akan membawa tema yang tersendiri. Reka bentuk yang dicadangkan terdiri daripada memelihara desa, mencerminkan irama pasang surut, kesejahteraan promosi, kesejahteraan, nadi kehidupan, menemui budaya, membentuk bentuk, diilhamkan oleh alam semulajadi untuk mengalir aliran.

Penjajaran
Berikutan cadangan awal semasa tempoh paparan awam, 37 stesen telah diluluskan sepanjang trek 52.2 km.

The stations listed below are as displayed on the government website for the draft environmental impact assessment. All the station names are interim and subject to change.

28 (23 elevated + 1 half-sunken + 4 underground) out of 35 stations (excluding the ones in MRT Sungai Buloh-Kajang Line) are expected to have feeder bus services.

Rolling stock
The rolling stock will be provided by HAP Consortium which consists of Hyundai Rotem, Apex Communications and POSCO Engineering. The trains are assumed to be driverless with a capacity of 1,200 passengers in a 4-car trainsets formation.

Car length (over coupler): 18.6 m to 20.1 m

Number of passenger doors per car side / door width: 4 / 1400 mm

Traction power supply: 750 VDC, 3rd rail

Exact rolling stock details have not yet been released.

The 4-car trainsets will be maintained at 2 purpose built facilities, Sungai Buloh and Serdang depots, located nearby Kwasa Damansara and the proposed Taman Universiti stations respectively.

MRT Laluan Lingkaran
The MRT 3, MRT Line 3 or MRT Circle Line was a proposed thirteenth rail transit line, the fifth fully automated and driverless rail system in Klang Valley area. If completed, this line would form the loop line of the Greater KL/Klang Valley Integrated Transit System. The director of this project is the former chief executive officer of Rapid Rail, Dato' Ir. Zohari Sulaiman.

It was one of three planned rail lines under Klang Valley Mass Rapid Transit Project by MRT Corp. Announcement of alignment and station locations was expected during the second quarter of 2011. The MRT Circle Line was expected to cover the hotspots surrounding the Bandar Malaysia, Ampang, KL Ecocity, Bukit Kiara and Sentul. Interest in building the line resurfaced in early 2015, but the project was then shelved by Prime Minister Mahathir Mohamad in May 2018.

Chronology

 * 12 August 2016 - MRT Corp announced that it is expected to submit the study on the MRT Line 3 to the government by year-end.
 * 6 September 2017 - Transport Minister Datuk Seri Liow Tiong Lai indicated that plans are being drawn up to fast-track the construction of MRT 3 for completion before 2027.
 * 27 October 2017 - During Budget 2018 announced on 27 Oct 2017, Prime Minister Najib Razak indicated that plans are being drawn up to fast-track the construction of MRT 3 for completion before 2025.
 * 3 January 2018 - The former CEO of Rapid Rail, Dato' Ir. Zohari Sulaiman, is appointed by MRTCorp to be the project director of this project.
 * 30 May 2018 - Prime Minister Mahathir Mohamad announced that the government would scrap the MRT 3 rail transit project.

Comments from MRT Corp. CEO
On 1 June 2018 (2 days after the project has been shelved by the Prime Minister), Dato' Sri Shahril Mokhtar who is the Chief Executive Officer of MRT Corp said that the cancellation of the project is not a mistake but it still needs to be done in the future.

"We abide by the government’s decision (to discontinue the project) but we also acknowledge that the MRT line 3 is critical to close all the loop. We hope that one day in the future, once the government’s fiscal position gets better, the government will consider this.", he added.

Other possible stations

 * Bandar Malaysia South - Interchange with SSP Line
 * Kerinchi - Interchange with KJ Line
 * Setiawangsa - Interchange with KJ Line
 * Jelatek - Interchange with KJ Line
 * Mid Valley - Interchange with Seremban line

MRT Circle Line