Sengkang LRT line

At the groundbreaking ceremony of the Bukit Panjang LRT line on 27 September 1996, deputy prime minister Tony Tan announced the government's decision to proceed with the Sengkang LRT (SKLRT) project. The line would be developed alongside the Sengkang estate and integrated with future developments, intended to improve accessibility and convenience for residents.{{Cite web |date=27 September 1996 |title=Speech by Dr Tony Tan Keng Yam, Deputy Prime Minister and Minister for Defence, at the Ground-Breaking Ceremony for Bukit Panjang Light Rapid Transit (LRT) Held on Friday, 27 September 1996 at 9.00 am |url=https://www.nas.gov.sg/archivesonline/data/pdfdoc/tkyt19960927s.pdf |access-date=21 January 2025 |website=National Archives of Singapore}}{{Cite news |last=Yeo |first=Geraldine |title=Sengkang Estate to be Developed with LRT Line |url=https://www.straitstimes.com/multimedia/graphics/assets/images/ST175/NewspaperSG/1996-09-28/full.jpg |access-date=21 January 2025 |work=The Straits Times |page=1}} An exhibition for the SKLRT opened on 7 December 1996. The SKLRT was planned to be completed in 2002.{{Cite web |date=7 December 1996 |title=Speech by Mr Mah Bow Tan, Minister for Communications, At the Sengkang LRT Exhibition At Ngee Ann City On 7 December 1996 at 10.00 am |url=https://www.nas.gov.sg/archivesonline/data/pdfdoc/mbt19961207s.pdf |access-date=21 January 2025 |website=National Archives of Singapore |archive-date=1 October 2020 |archive-url=https://web.archive.org/web/20201001033915/https://www.nas.gov.sg/archivesonline/data/pdfdoc/mbt19961207s.pdf |url-status=live }}

The contract for the design and construction of the Sengkang and Punggol LRT lines was awarded to a joint venture on 4 July 1998 for S$656 million (US${{ToUSD|656|Singapore|year=1998|r=1}} million). The joint venture comprised Singapore Technologies Industrial Corporation, Mitsubishi Heavy Industries and Mitsubishi Corporation.{{cite web |title=Speech by Mr Mah Bow Tan Minister for Communications Sengkang and Punggol LRT Systems Contract Award Ceremony On 4 July 1998, 11 A.M. |url=https://www.nas.gov.sg/archivesonline/data/pdfdoc/1998070406.htm |access-date=21 January 2025 |website=National Archives of Singapore |archive-date=19 October 2020 |archive-url=https://web.archive.org/web/20201019134212/https://www.nas.gov.sg/archivesonline/data/pdfdoc/1998070406.htm |url-status=live }}{{cite news |date=5 July 1998 |title=LRT for Punggol by 2004 |url=https://www.straitstimes.com/multimedia/graphics/assets/images/ST175/NewspaperSG/1998-07-05/full.jpg |access-date=30 September 2022 |work=The Straits Times |publisher=Singapore Press Holdings |page=1}} On 20 May 1999, SBS Transit (then Singapore Bus Service) was appointed to operate the SKLRT along with the North East line and the Punggol LRT line.{{Cite news |last=Kaur |first=Karamjit |date=21 May 1999 |title=SBS to Run North-East Line, Tibs to Merge with SMRT |url=https://www.straitstimes.com/multimedia/graphics/assets/images/ST175/NewspaperSG/1999-05-21/full.jpg |access-date=6 October 2019 |work=The Straits Times |page=1}}{{Cite web |date=20 May 1999 |title=Appointment of Operator for the North East MRT Line |url=http://www.nas.gov.sg/archivesonline/data/pdfdoc/1999200503.htm |url-status=live |archive-url=https://web.archive.org/web/20191123175914/https://www.nas.gov.sg/archivesonline/data/pdfdoc/1999200503.htm |archive-date=23 November 2019 |access-date=22 November 2019 |website=National Archives of Singapore}}

Construction of the LRT stations and viaducts was completed in 2001.{{Cite news |last=Yeow |first=Stephanie |date=15 March 2001 |title=Bridging the Gap |url=https://www.straitstimes.com/multimedia/graphics/assets/images/ST175/NewspaperSG/2001-03-15/full.jpg |access-date=21 January 2025 |work=The Straits Times |page=1 |archive-date=16 January 2025 |archive-url=https://web.archive.org/web/20250116104058/https://www.straitstimes.com/multimedia/graphics/assets/images/ST175/NewspaperSG/2001-03-15/full.jpg |url-status=live }} In December that year, subcontractor BRR Holdings withdrew from the LRT project and handed over its responsibilities to SembCorp Engineers and Constructors. According to the Land Transport Authority (LTA), the withdrawal had minimal impact on the construction schedule.{{Cite news |last=Tan |first=Lorna |date=5 December 2001 |title=Company pulls out of LRT projects. |url=https://litter.catbox.moe/cuzsn2.pdf |url-status=dead |archive-url=https://web.archive.org/web/20250116105311/https://litter.catbox.moe/cuzsn2.pdf |archive-date=16 January 2025 |access-date=16 January 2025 |work=The Straits Times |page=6 |via=Factiva}}

On 1 September 2002, the LTA transferred operations of the SKLRT to SBS Transit, which conducted extensive test runs and trials on the line. This came in light of frequent delays and breakdowns experienced on the Bukit Panjang LRT.{{Cite news |last=Kaur |first=Karamjit |date=8 September 2002 |title=Sengkang LRT will be tested… and tested again |url=https://litter.catbox.moe/1kmcdd.PDF |url-status=dead |archive-url=https://web.archive.org/web/20250116105724/https://litter.catbox.moe/1kmcdd.PDF |archive-date=16 January 2025 |access-date=16 January 2025 |work=The Straits Times |page=33 |via=Nexis Uni}} In December 2002, transport minister Yeo Cheow Tong said the opening of the SKLRT would be delayed due to modifications required for the communication and radio systems.{{Cite news |last=Kaur |first=Karamjit |date=7 January 2003 |title=LRT rides in Sengkang just weeks away |url=https://litter.catbox.moe/6bgt5m.PDF |url-status=dead |archive-url=https://web.archive.org/web/20250116110311/https://litter.catbox.moe/6bgt5m.PDF |archive-date=16 January 2025 |access-date=16 January 2025 |work=The Straits Times |page=4 |via=Nexis Uni}}

File:Cheng Lim LRT Station, Sep 05.JPG

The east loop commenced operations on 18 January 2003, offering free rides during its first two days.{{cite web |title=Free LRT service in Sengkang |url=http://eresources.nlb.gov.sg/newspapers/Digitised/Article/today20030117-2.2.5.9 |website=Today | via=NewspaperSG |access-date=13 October 2019 |date=17 January 2003 }}{{cbignore}} At the time, 90% of Sengkang residents lived along the east loop, while the west remained largely undeveloped. Although the east loop was scheduled to open at 2{{nbsp}}pm that day, SBS Transit began operations 30 minutes earlier to accommodate the queue of the 100 waiting commuters. The initial fare on the Sengkang LRT was S$0.64 per trip (US${{ToUSD|0.64|Singapore}}).{{cite news |last1=Kaur |first1=Karamjit |title=Smooth Start for Sengkang LRT |url=https://www.straitstimes.com/multimedia/graphics/assets/images/ST175/NewspaperSG/2003-01-19/full.jpg |access-date=21 January 2025 |work=The Straits Times |date=19 January 2003}} The system experienced its first breakdown on 5 September that year because of a computer failure. Free bus services were provided during the 30-minute disruption.{{cite news |title=Sengkang LRT down |url=https://eresources.nlb.gov.sg/newspapers/digitised/article/today20030906-1.2.6.9.3 |access-date=21 January 2025 |work=Today |date=6 September 2003 |page=6 |via=NewspaperSG}}{{cbignore}}

With the exception of the Farmway, Cheng Lim and Kupang stations, the west loop commenced operations on 29 January 2005.{{cite web |last1=Wong |first1=Siew Ying |title=Punggol LRT East, SengKang LRT West loops to start service on Jan 29 |url=http://www.channelnewsasia.com/stories/singaporelocalnews/view/126618/1/.html |website=Channel NewsAsia |access-date=22 January 2025 |archive-url=https://web.archive.org/web/20050319083835/http://www.channelnewsasia.com/stories/singaporelocalnews/view/126618/1/.html |archive-date=19 March 2005 |date=10 January 2005 |url-status=dead}} To mark the commencement of the west loop, Wee Siew Kim, Adviser to Jalan Kayu Grassroots Organisations, officiated the opening of the bridge linking Thanggam Station to Jalan Kayu via Lorong Samak. The west loop initially operated unidirectional services in the peak flow direction. Morning services from 5:20{{Nbsp}}am to 3:00{{Nbsp}}pm ran anti-clockwise from Thanggam to Renjong, while evening services from 3:00{{Nbsp}}pm to 12:35{{Nbsp}}am operated clockwise from Renjong to Thanggam.

Farmway station opened on 15 November 2007, to serve the Anchorvale Community Club and the Sengkang Sports Complex.{{cite web |title=Train Service Information: Farmway |url=https://www.sbstransit.com.sg/Service/TrainInformation?TrainLine=SKG+LRT&Station=SW2 |access-date=21 January 2025 |website=SBSTransit}} On 4 January 2010, the west loop commenced bidirectional services only on weekday peak hours from 6:45{{Nbsp}}am to 9:00{{Nbsp}}am and from 6:15{{Nbsp}}pm to 8:30{{Nbsp}}pm. Full-day bidirectional services on the west loop began on 1 January 2013 with the opening of Cheng Lim station.{{Cite news |date=22 December 2012 |title=Sengkang West LRT to extend services, Cheng Lim station to open |url=https://eresources.nlb.gov.sg/newspapers/digitised/article/today20121222-1.2.27.3 |access-date=21 January 2025 |work=Today |page=20 |via=NewspaperSG}} Kupang station opened on 27 June 2015 to cater to new residential developments in its vicinity. Daily ridership on the SKLRT at the time had reached 60,000.{{Cite web |date=15 June 2015 |title=Kupang LRT Station to Open and More than 260 Weekly Trips to be Added to the Sengkang/Punggol LRT |url=https://www.sbstransit.com.sg/press/2015-06-15-02.aspx |url-status=dead |archive-url=https://web.archive.org/web/20171010155818/https://www.sbstransit.com.sg/press/2015-06-15-02.aspx |archive-date=10 October 2017 |access-date=21 January 2025 |publisher=SBS Transit}}

A power trip caused a two-hour disruption on the evening of 1 June 2016.{{cite web |date=1 June 2016 |title=Service on Punggol and Sengkang LRT disrupted for 2½ hours due to repeated power trips |url=https://www.straitstimes.com/singapore/transport/service-on-punggol-and-sengkang-lrt-disrupted-for-212-hours-due-to-repeated |access-date=21 January 2025 |website=The Straits Times}} On 16 February 2018, a dislodged power collector shoe caused a train to stall near Sengkang station.{{cite web |last=Hussain |first=Amir |date=16 February 2018 |title=Sengkang LRT train breaks down on first day of CNY, passengers get down and walk on tracks |url=https://www.straitstimes.com/singapore/transport/sengkang-lrt-train-breaks-down-on-first-day-of-cny-passengers-get-down-and-walk |url-status=live |archive-url=https://web.archive.org/web/20190825064623/https://www.straitstimes.com/singapore/transport/sengkang-lrt-train-breaks-down-on-first-day-of-cny-passengers-get-down-and-walk |archive-date=25 August 2019 |access-date=21 January 2025 |website=The Straits Times}} SBS Transit reported a "loud boom" was heard before the train stalled.{{cite web |date=16 February 2018 |title=Passengers stranded on track at Sengkang after LRT hit by power fault |url=https://www.todayonline.com/singapore/passengers-stranded-track-sengkang-after-lrt-hit-power-fault |access-date=21 January 2025 |website=Today}} Passengers were able to disembark from the faulty train, which was hauled away before services resumed. On 9 June 2024, the signalling system's power supply failed during upgrading works. As a result, no trains could be launched on that morning, with services only resuming at 10:12{{Nbsp}}am.{{cite web |last=Chiu |first=Christie |date=2024-06-09 |title=Punggol-Sengkang LRT service resumes after 4-hour disruption on Sunday morning |url=https://www.straitstimes.com/singapore/no-train-service-at-punggol-and-sengkang-lrt-due-to-signalling-fault-on-sunday-morning |access-date=2024-06-09 |website=The Straits Times}}{{cite web |date=9 June 2024 |title=Sengkang-Punggol LRT train service resumes after 4-hour disruption |url=https://www.channelnewsasia.com/singapore/sengkang-punggol-lrt-train-service-resumes-after-4-hour-disruption-4397411 |access-date=21 January 2025 |website=CNA}}

On 31 October 2012, the LTA announced plans to increase passenger capacity of the Sengkang and Punggol LRT lines (SPLRT) to cater to increased ridership on the SPLRT. The upgrading works involved retrofitting 16 of the 41 one-car trains for two-car operations while purchasing 16 additional cars.{{cite web | url=http://app.lta.gov.sg/apps/news/page.aspx?c=2&id=8a70fc51-fd2a-4793-ac12-700db7586496 | title=2-car System for Sengkang Punggol LRT by 2016; Improvements to Choa Chu Kang LRT station | publisher=Land Transport Authority | date=31 October 2012 | access-date=12 October 2013 | url-status=dead | archive-url=https://web.archive.org/web/20131022195642/http://app.lta.gov.sg/apps/news/page.aspx?c=2&id=8a70fc51-fd2a-4793-ac12-700db7586496 | archive-date=22 October 2013 }} Two-car operations on the SKLRT began on 22 December 2015. The official inauguration of two-car operations on the SKLRT was held on 5 January 2016, with Senior Minister of State for Transport Ng Chee Meng and other Sengkang Members of Parliament in attendance.{{cite web |last=Yuen |first=Sin |date=5 January 2016 |title=Two-car trains on Sengkang loop of LRT start official operations |url=https://www.straitstimes.com/singapore/transport/two-car-trains-on-sengkang-loop-of-lrt-start-official-operations |access-date=22 January 2025 |website=The Straits Times}}

On 15 December 2017, the LTA announced plans to renew and upgrade the SPLRT to enhance its operational reliability.{{cite web |date=15 December 2017 |title=Improvement Works to Enhance Reliability of LRT Systems |url=https://www.lta.gov.sg/content/ltagov/en/newsroom/2017/12/2/improvement-works-to-enhance-reliability-of-lrt-systems.html |url-status=dead |archive-url=https://web.archive.org/web/20200516003937/https://www.lta.gov.sg/content/ltagov/en/newsroom/2017/12/2/improvement-works-to-enhance-reliability-of-lrt-systems.html |archive-date=16 May 2020 |access-date=21 January 2025 |publisher=Land Transport Authority}} The works included replacing the power rail and its assemblies, along with conducting maintenance on the signalling switch machines and cables. Additionally, the crossheads supporting the viaducts were to be reinforced and the viaduct bearings replaced, following the discovery of cracks on the crossheads during routine inspections.{{Cite web |date=15 December 2017 |title=Limited service along Sengkang-Punggol LRT on Sundays in Jan, Feb to facilitate rail works |url=https://www.channelnewsasia.com/news/singapore/limited-service-along-sengkang-punggol-lrt-on-sundays-in-jan-feb-9502364 |url-status=dead |archive-url=https://web.archive.org/web/20171216201515/https://www.channelnewsasia.com/news/singapore/limited-service-along-sengkang-punggol-lrt-on-sundays-in-jan-feb-9502364 |archive-date=16 December 2017 |access-date=17 December 2017 |work=CNA}}

The maintenance works took place on selected Sunday mornings from 14 January to 25 February 2018. On these days, the affected loops ran unidirectional services from 5:30{{Nbsp}}am to 7:00{{Nbsp}}am. Unidirectional services remained in operation on Sunday mornings from 4 March to 29 April due to the extension of maintenance works on the SPLRT. These works involved replacing the power rail and power rail assemblies, as well as carrying out preventive maintenance on the signalling cables.{{Cite web |date=22 February 2018 |title=Maintenance work to resume on Sengkang and Punggol LRT systems on 4 Mar |url=https://www.channelnewsasia.com/news/singapore/maintenance-work-to-resume-on-sengkang-and-punggol-lrt-systems-9981524 |url-status=dead |archive-url=https://web.archive.org/web/20180223171302/https://www.channelnewsasia.com/news/singapore/maintenance-work-to-resume-on-sengkang-and-punggol-lrt-systems-9981524 |archive-date=23 February 2018 |access-date=23 February 2018 |work=CNA}}{{Cite news |last1=Hussain |first1=Amir |date=22 February 2018 |title=Maintenance works to resume on Sengkang and Punggol LRT systems |url=http://www.straitstimes.com/singapore/transport/maintenance-works-to-resume-on-sengkang-and-punggol-lrt-systems |url-status=live |archive-url=https://web.archive.org/web/20180223171526/http://www.straitstimes.com/singapore/transport/maintenance-works-to-resume-on-sengkang-and-punggol-lrt-systems |archive-date=23 February 2018 |access-date=23 February 2018 |newspaper=The Straits Times}} Rectification works on the concrete plinths and elevated slabs were conducted on Sunday evenings between May 27 and October 7.{{Cite web |date=11 May 2018 |title=Limited service hours on Sundays for Sengkang-Punggol LRT to be extended |url=https://www.todayonline.com/singapore/limited-service-hours-sundays-sengkang-punggol-lrt-be-extended |url-status=live |archive-url=https://web.archive.org/web/20231128205012/https://www.todayonline.com/singapore/limited-service-hours-sundays-sengkang-punggol-lrt-be-extended |archive-date=28 November 2023 |access-date=14 May 2018 |website=Today}} These works involved breaking up the existing concrete plinths, realigning the finger joints, and recementing them into position.{{cite web |date=7 October 2018 |title=Extended Engineering Hours on Sengkang and Punggol LRT systems on Sundays from 27 May to 7 October 2018 |url=https://www.sbstransit.com.sg/news/extended-engineering-hours-on-sengkang-and-punggol-lrt-systems-on-sundays-from-27-may-to-7-october-2018 |access-date=22 January 2025 |website= |publisher=SBS Transit}}{{Cite news |last1=Lam |first1=Lydia |date=11 May 2018 |title=SBS Transit extends limited service on Sundays for Sengkang, Punggol LRT to October |url=https://www.straitstimes.com/singapore/transport/sbs-transit-extends-limited-service-on-sundays-for-sengkang-punggol-lrt-to |url-status=live |archive-url=https://web.archive.org/web/20180514213504/https://www.straitstimes.com/singapore/transport/sbs-transit-extends-limited-service-on-sundays-for-sengkang-punggol-lrt-to |archive-date=14 May 2018 |access-date=14 May 2018 |newspaper=The Straits Times}} Maintenance works during service hours continued in 2020,{{cite web |date=31 July 2020 |title=Extended Engineering Hours on Sengkang-Punggol Light Rail Transit on Sundays |url=https://www.sbstransit.com.sg/news/extended-engineering-hours-on-sengkang-punggol-light-rail-transit-on-sundays |access-date=22 January 2025 |publisher=SBS Transit}} 2021,{{cite web |date=26 September 2021 |title=Extended engineering hours on Sengkang-Punggol Light Rail Transit on Saturdays and Sundays |url=https://www.sbstransit.com.sg/news/extended-engineering-hours-on-sengkang-punggol-light-rail-transit-on-saturdays-and-sundays-1 |access-date=22 January 2025 |website= |publisher=SBS Transit}} and 2022.{{cite web |date=25 September 2022 |title=Extended Engineering Hours on Sengkang-Punggol Light Rail Transit on Saturdays and Sundays |url=https://www.sbstransit.com.sg/news/extended-engineering-hours-on-sengkang-punggol-light-rail-transit-on-saturdays-and-sundays-2 |access-date=22 January 2025 |publisher=SBS Transit }}

In May 2018, the LTA announced plans to refurbish Sengkang station. The upgrades included expanding the LRT platform and installing new dual-speed escalators and a new lift to connect the platforms, concourse and mezzanine levels of the station. The works were expected to be completed by 2022.{{cite web |date=25 May 2018 |title=Upgrading of Sengkang MRT and LRT Stations for More Comfortable Journeys |url=https://www.lta.gov.sg/content/ltagov/en/newsroom/2018/5/2/upgrading-of-sengkang-mrt-and-lrt-stations-for-more-comfortable-journeys.html |url-status=dead |archive-url=https://web.archive.org/web/20200515112459/https://www.lta.gov.sg/content/ltagov/en/newsroom/2018/5/2/upgrading-of-sengkang-mrt-and-lrt-stations-for-more-comfortable-journeys.html |archive-date=15 May 2020 |access-date=21 January 2025 |publisher=Land Transport Authority}}{{cite web |date=25 May 2018 |title=Upgrades to Sengkang MRT and LRT stations by 2022: LTA |url=https://www.channelnewsasia.com/news/singapore/upgrades-to-sengkang-mrt-and-lrt-stations-by-2022-lta-10277532 |url-status=dead |archive-url=https://web.archive.org/web/20191211132539/https://www.channelnewsasia.com/news/singapore/upgrades-to-sengkang-mrt-and-lrt-stations-by-2022-lta-10277532 |archive-date=11 December 2019 |access-date=11 December 2019 |website=Channel NewsAsia |publisher=}} New signs and queue markings were implemented to indicate new stopping locations for each of the four LRT routes plying the station.{{cite web |title=Thomson – East Coast Line 4 to Welcome Commuters from 23 June 2024 |url=https://www.lta.gov.sg/content/ltagov/en/newsroom/2024/3/news-releases/TEL4_to_welcome_commuters.html |access-date=10 March 2024 |website=LTA}} The refurbished LRT platforms began operations at the end of September 2024.{{cite web |last=Yufeng |first=Kok |date=19 September 2024 |title=Sengkang LRT upgrading: Trains to run in only one direction on Sept 28-29 |url=https://www.straitstimes.com/singapore/transport/sengkang-lrt-upgrading-trains-to-operate-in-only-one-direction-on-east-west-loops-on-sept-28-29 |access-date=29 September 2024 |website=The Straits Times}}

On 5 February 2021, the LTA announced plans to purchase 17 two-car trains for the SPLRT, which were expected to be delivered from 2024 to 2027. The {{Cvt|3.5|ha|adj=on}} Sengkang Depot would also be expanded to {{Cvt|11.1|ha|4=1}} to ensure additional capacity and maintenance space for the new trains. The depot expansion also included the construction of two new reception tracks to reduce train launching time.{{cite web|title=Sengkang-Punggol LRT to get 17 new two-car trains to boost capacity|url=https://www.channelnewsasia.com/news/singapore/sengkang-punggol-lrt-17-new-two-car-trains-lta-depot-expand-14118006|website=CNA|date=5 February 2021|access-date=6 February 2021|archive-date=15 May 2021|archive-url=https://web.archive.org/web/20210515083925/https://www.channelnewsasia.com/news/singapore/sengkang-punggol-lrt-17-new-two-car-trains-lta-depot-expand-14118006|url-status=dead}}{{cite web | title=New Two-car Trains for Sengkang-Punggol LRT | publisher=Land Transport Authority | date=5 February 2021 | url=https://www.lta.gov.sg/content/ltagov/en/newsroom/2021/2/news-releases/New_two-car_trains_for_SPLRT.html | access-date=22 January 2025 | archive-date=28 August 2021 | archive-url=https://web.archive.org/web/20210828100151/https://www.lta.gov.sg/content/ltagov/en/newsroom/2021/2/news-releases/New_two-car_trains_for_SPLRT.html | url-status=live }} In February 2022, the contract for the depot expansion was awarded to Sato Kogyo (S) Pte Ltd for S$157 million (US${{ToUSD|157|Singapore|y=2022|r=1}} million), and the contract for the new fleet of trains was awarded to Mitsubishi Corporation for S$439 million (US${{ToUSD|439|Singapore|y=2022|r=1}} million).

File:Singapore Sengkang LRT Line Map.jpg

The Sengkang LRT (SKLRT) is a fully elevated automated guideway transit line,{{cite book | last=Vuchic | first=Vukan R. | title=Urban Transit Systems and Technology | publisher=John Wiley & Sons | publication-place=Hoboken, N.J | date=16 February 2007 | isbn=978-0-471-75823-5 | page=467}}{{efn|Also called an "Automated People Mover" (APM) by Mitsubishi.{{sfn|Mochidome|Masukawa|2003|p=1}}}} with a route length of {{convert|10.7|km|miles}}.{{sfn|Kyosan Electric|n.d.|p=11}} It is coloured grey on official maps.{{Cite web |last= |first= |date= |title=MRT System Map |url=https://www.lta.gov.sg/content/dam/ltagov/getting_around/public_transport/rail_network/pdf/sm-20-03-en-exp.pdf |url-status=live |archive-url=https://web.archive.org/web/20200821064838/https://www.lta.gov.sg/content/dam/ltagov/getting_around/public_transport/rail_network/pdf/sm-20-03-en-exp.pdf |archive-date=21 August 2020 |access-date= |publisher=Land Transport Authority}} On dynamic passenger information displays and static signs on the platforms, yellow indicates the east loop, and red indicates the west loop.{{cite web |date=26 February 2025 |title=Written Reply to Parliamentary Question on Colour Coding of Lines of LRT System to Guide Commuters |url=https://www.mot.gov.sg/news/Details/written-reply-to-parliamentary-question-on-colour-coding-of-lines-of-lrt-system-to-guide-commuters |access-date=27 February 2025 |website=Ministry of Transport (MOT)}} The SKLRT has four routes operating on two bi-directional loops that converge at Sengkang station.{{sfn|Kyosan Electric|n.d.|p=11}}{{cite web | last=Yeap | first=Amanda | title=Is there still light at the end of the tunnel for Singapore's Light Rail Transit system? | website=CNA | date=12 October 2024 | url=https://www.channelnewsasia.com/today/big-read/25-years-lrt-launch-future-4670156?cid=braze-cna_cna-morning-brief_newsletter_13102024_cna | access-date=20 January 2025}}{{cite web |last=Lee |first=Nian Tjoe |date=21 March 2024 |title=Upgrading of Sengkang LRT station set to begin; completion slated for end-2024 |url=https://www.straitstimes.com/singapore/transport/upgrading-of-sengkang-lrt-station-set-to-begin-completion-slated-for-q4-2024 |access-date=20 January 2025 |website=The Straits Times}} The line generally runs along road medians, with an average viaduct height of {{convert|15|m|ft}}.{{cite web | last=Ng | first=Keith | title=Pre-cast push | website=Cranes Today | date=1 August 2001 | url=https://www.cranestodaymagazine.com/analysis/pre-cast-push/ | access-date=20 January 2025}}

On the east loop, the line heads north from Sengkang station before curving eastward and running along the medians of Compassvale Street and Rivervale Drive. After passing Rumbia station, it turns south along Rivervale Drive, then west along Sengkang East Avenue, completing the loop by heading north back to Sengkang station. On the west loop, the line from Sengkang station diverges west toward Cheng Lim station. A spur connects the SKLRT to the Punggol LRT line across the Tampines Expressway.{{cite web |title=センカン路線図 |url=http://www.kyosan.co.jp/topics/circular/03v54/v2003z.jpg |website=Kyosan Electric |access-date=20 January 2025 |archive-url=https://web.archive.org/web/20040814025930/http://www.kyosan.co.jp/topics/circular/03v54/v2003z.jpg |archive-date=14 August 2004 |language=Japanese |url-status=dead}} The SKLRT runs along Anchorvale Street and Fernvale Street. Between the Farmway and Kupang stations, the line crosses Sungei Punggol. After Kupang station, the line turns south along Fernvale Road, and turns east along Sengkang West Avenue.{{cite web | title=OneMap | website=OneMap | publisher=Singapore Land Authority | date=31 August 2017 | url=https://www.onemap.gov.sg/?lat=1.3916094&lng=103.8954426 | access-date=20 January 2025}}{{cbignore}} It crosses Sungei Punggol again between Layar and Tongkang stations, with reception tracks connecting the line to Sengkang Depot. Following Renjong station, the line completes the loop by heading north back to Sengkang station. From 30 September 2024, SKLRT at Sengkang station was upgraded with four boarding locations, dedicated for each bi-directional travel direction on both east and west lines.{{Cite news |last= |first= |title=Sengkang LRT upgrading: Trains to run in only one direction on Sept 28-29 |date=19 September 2024|url=https://www.straitstimes.com/singapore/transport/sengkang-lrt-upgrading-trains-to-operate-in-only-one-direction-on-east-west-loops-on-sept-28-29 |publisher=Straits Times}}

The line operates between 5:18{{Nbsp}}am (5:38{{Nbsp}}am on Sundays and public holidays) and 12:37{{Nbsp}}am daily.{{cite web |title=First Train/ Last Train |url=https://www.sbstransit.com.sg/first-train-last-train |access-date=22 January 2025 |publisher=SBS Transit |archive-date=28 November 2019 |archive-url=https://web.archive.org/web/20191128080621/https://www.sbstransit.com.sg/first-train-last-train |url-status=live }} The SKLRT is operated by SBS Transit.{{Cite web |title=Getting Around – Public Transport – Rail Network |url=https://www.lta.gov.sg/content/ltagov/en/getting_around/public_transport/rail_network.html |url-status=live |archive-url=https://web.archive.org/web/20191101093543/https://www.lta.gov.sg/content/ltagov/en/getting_around/public_transport/rail_network.html |archive-date=1 November 2019 |access-date=27 April 2021 |publisher=Land Transport Authority}} Since 2018, the SKLRT has been part of the New Rail Financing Framework (NRFF). Previously, the operator (the owner of the rail assets) had to bear the cost of maintaining and upgrading trains and signalling. Under the NRFF, the LTA and SBS Transit share the profits and financial risks in operating the line and the LTA will take control of its operating assets on 1 April 2033. SBS Transit operate the line under a 15-year licence which will expire on 31 March 2033.{{cite web | title=North East Line, Sengkang LRT and Punggol LRT to Transit to the New Rail Financing Framework: Completion of the Transition of All Existing Rail Lines, Benefitting Commuters | publisher=Land Transport Authority | date=14 February 2018 | url=https://www.lta.gov.sg/content/ltagov/en/newsroom/2018/2/2/north-east-line-sengkang-lrt-and-punggol-lrt-to-transit-to-the-new-rail-financing-framework-completion-of-the-transitio.html | access-date=29 August 2021 | archive-date=29 August 2021 | archive-url=https://web.archive.org/web/20210829031731/https://www.lta.gov.sg/content/ltagov/en/newsroom/2018/2/2/north-east-line-sengkang-lrt-and-punggol-lrt-to-transit-to-the-new-rail-financing-framework-completion-of-the-transitio.html | url-status=live }}{{Cite web |last=Abdullah |first=Zhaki |date=14 February 2018 |title=LTA to Take Over North East Line, Sengkang-Punggol LRT Assets Worth $30.8M |url=https://www.straitstimes.com/singapore/transport/lta-to-take-over-north-east-line-sengkang-punggol-lrt-assets-worth-308m |url-status=live |archive-url=https://web.archive.org/web/20230207065417/https://www.straitstimes.com/singapore/transport/lta-to-take-over-north-east-line-sengkang-punggol-lrt-assets-worth-308m |archive-date=7 February 2023 |access-date=7 February 2023 |website=The Straits Times |publisher=Singapore Press Holdings}}

The east loop has five stations, while the west loop has eight stations. The average distance between stations are {{convert|300|m|ft}}, with each station positioned to serve residents within a {{convert|400|m|ft|adj=on}} radius.{{cite news |last1=Yeo |first1=Geraldine |title=Travel to be seamless in Sengkang |url=https://eresources.nlb.gov.sg/newspapers/digitised/page/straitstimes19990420-1.1.4 |work=The Straits Times |date=20 April 1999 |page=4|via=NewspaperSG}}{{cbignore}}

File:(SGP-Singapore) Sengkang LRT Line Mitsubishi Heavy Industries Crystal Mover C810 33 @ Fernvale 2025-02-02.jpg

File:Sengkang Depot, Aug 06.JPG.]]

The Sengkang and Punggol LRT lines (SPLRT) utilise the Crystal Mover Automated People Mover (APM) rolling stock manufactured by Mitsubishi Heavy Industries.{{sfn|Mochidome|Masukawa|2003|p=1}} The rubber-tyred trains are fully automatic and can accommodate up to 105 passengers per vehicle.{{sfn|Mochidome|Masukawa|2003|p=2}}{{cite web |title=LRT – Your Link to the MRT |url=http://www.lta.gov.sg/public_transport/pt_rail_lrt.htm |publisher=Land Transport Authority |access-date=18 January 2025 |archive-url=https://web.archive.org/web/20040614100522/http://www.lta.gov.sg/public_transport/pt_rail_lrt.htm |archive-date=14 June 2004 |url-status=dead}} The SPLRT has an initial fleet of 41 APMs, with 16 more APMs delivered under contract C810A.{{cite news |date=22 May 2013 |title=Mitsubishi Heavy Industries and Mitsubishi Corporation Receive Order for Design, Manufacture, Installation and Commissioning of Singapore Light Rapid Transit Capacity Expansion – Vehicles and Electrical and Mechanical Systems for Sengkang and Punggol LRT Systems (C810A) |url=http://www.mhi.co.jp/en/m/news/story/1305221663.html |url-status=dead |archive-url=https://web.archive.org/web/20160304052819/http://www.mhi.co.jp/en/m/news/story/1305221663.html |archive-date=4 March 2016 |access-date=25 November 2015 |work=Mitsubishi Heavy Industries}}{{cite web | last=Tan | first=Christopher | title=2-car trains roll out on Sengkang LRT | website=The Straits Times | date=24 December 2015 | url=https://www.straitstimes.com/singapore/transport/2-car-trains-roll-out-on-sengkang-lrt | access-date=18 January 2025 | archive-date=27 November 2020 | archive-url=https://web.archive.org/web/20201127134622/http://www.straitstimes.com/singapore/transport/2-car-trains-roll-out-on-sengkang-lrt | url-status=live }} The APMs are configured for single car or two-car operations, with a maximum capacity of 36 trainsets on the network.{{cite web | last=Tan | first=Christopher | title=Hairline cracks found on 11 Sengkang-Punggol LRT trains | website=The Straits Times | date=9 September 2016 | url=https://www.straitstimes.com/singapore/transport/hairline-cracks-found-on-11-sengkang-punggol-lrt-trains | access-date=18 January 2025}} In February 2022, the LTA ordered another fleet of 17 two-car APMs{{efn|Under contract 810D{{cite report |title=Annual Report 18/19 |publisher=Land Transport Authority |page=61 |url=https://www.lta.gov.sg/content/dam/ltagov/who_we_are/statistics_and_publications/report/pdf/Annual%20Report%201819.pdf |access-date=23 January 2025 |archive-url=https://web.archive.org/web/20201220010202/https://www.lta.gov.sg/content/dam/ltagov/who_we_are/statistics_and_publications/report/pdf/Annual%20Report%201819.pdf |archive-date=20 December 2020}}}} from Mitsubishi for S$439 million.{{cite web | title=LTA Awards Contracts for New Trains and Depot Expansion for Sengkang-Punggol LRT | website=LTA | date=15 February 2022 | url=https://www.lta.gov.sg/content/ltagov/en/newsroom/2022/2/news-releases/lta-awards-contracts-for-new-trains-and-depot-expansion-for-seng.html | access-date=18 January 2025}}{{cite web | title=MHIENG Receives Order for Project to Enhance Capacity of Sengkang-Punggol Light Rapid Transit System in Singapore – Strengthening the Safe and Smooth Transport Structure in the Sengkang and Punggol Districts | website=Mitsubishi Heavy Industries | date=17 February 2022 | url=https://www.mhi.com/news/220217.html | access-date=18 January 2025}} This was followed by another order for eight more two-car trains in May 2023, costing S$87 million.{{cite web | title=8 new two-carriage trains to be added to Sengkang-Punggol LRT line | website=The Straits Times | date=9 May 2023 | url=https://www.straitstimes.com/singapore/8-new-two-carriage-trains-to-be-added-to-sengkang-punggol-lrt-line | access-date=18 January 2025}}{{cite web | title=MHI Receives Follow-up Order for 8 Two-Car Trains for Sengkang-Punggol LRT (SPLRT) – Additional 16 Cars to Boost Capacity of SPLRT Serving Sengkang and Punggol Districts | website=Mitsubishi Heavy Industries, Ltd. | date=9 May 2023 | url=https://www.mhi.com/news/23050901.html | access-date=18 January 2025}} The new trains are set to replace the 25 one-car trains and half of the 16 two-car trains, bringing the overall SPLRT fleet to 33 two-car APMs. The first two trainsets were delivered to Singapore on 23 November 2024 and are expected to commence operations in 2025.{{cite web |last=Loi |first=Esther |date=25 November 2024 |title=First 2 new trains for Sengkang-Punggol LRT arrive in Singapore, will enter service in Q3 2025 |url=https://www.straitstimes.com/singapore/transport/first-2-new-trains-for-sengkang-punggol-lrt-arrive-in-singapore-to-go-into-service-in-q3-2025 |access-date=21 January 2025 |website=The Straits Times}}

The APMs have a top speed of {{Convert|80|km/h|mph|abbr=on}}, with a maximum operational speed of {{Convert|70|km/h|mph|abbr=on}}.{{sfn|Mochidome|Masukawa|2003|p=2}} They are powered by 750V DC third rail located on one side of the guideway.{{sfn|Mochidome|Masukawa|2003|p=9}} Each vehicle is {{Convert|11.84|m|ft|abbr=on}} long and {{Convert|2.69|m|ft|abbr=on}} wide.{{sfn|Mochidome|Masukawa|2003|p=2}} The exterior has a crystal-like design with a polyhedral nose reflective of its namesake. Mitsubishi describes the curved sides of the APM as a design choice to "soften" the sharpness of its polyhedral shape. The exterior is painted pearl white and indigo blue.{{sfn|Mochidome|Masukawa|2003|p=3}}

As driverless vehicles, the APMs do not include a driver cabin.{{sfn|Mochidome|Masukawa|2003|p=3}} Instead, detrainment doors at both ends of the cabin allow emergency evacuation of passengers onto the track.{{cite web | title=LRT: Safety Tips | publisher=SBS Transit | url=http://www.sbstransit.com.sg/transport/trpt_lrt_safety.aspx | archive-url=https://web.archive.org/web/20170816122219/http://www.sbstransit.com.sg/transport/trpt_lrt_safety.aspx | archive-date=16 August 2017 | url-status=dead | access-date=19 January 2025}} The emergency stop button and emergency notice system are located at the right-side corner of the vehicle's front, while line maps and service information are displayed on the left. The interior features white side panels and ceiling, a grey floor, grayish-blue seats, and handrails and grip bars accented in a wine color.{{sfn|Mochidome|Masukawa|2003|p=3}} The cabins are air-conditioned.{{sfn|Mochidome|Masukawa|2003|p=8}}

The SPLRT trains are maintained and stabled on the second floor of Sengkang Depot.{{sfn|Mochidome|Masukawa|2003|p=9}} Located between the Layar and Tongkang LRT stations,{{cite web |title=Annex A: Location Map and Artist |url=https://www.lta.gov.sg/content/dam/ltagov/news/press/2022/150222-splrt-depot-annex-a.pdf |publisher=Land Transport Authority |access-date=18 January 2025}} the depot also houses the trains of the North East line. Its facilitates include a two-story main building with an operation control center room, automatic vehicle washing facility, maintenance garage, departure inspection track, stabling yard, power receiving and transforming facilities, and a test track.{{sfn|Mochidome|Masukawa|2003|p=9}} The {{convert|3.5|ha|adj=on}} site is being expanded to {{convert|11.1|ha}}, which will include two more reception tracks and three new traction power substations to expand the depot's stabling and maintenance capacity.{{cite web | first=Nian Tjoe | last=Lee | title=LTA awards $596m contracts for trains and depot expansion on Sengkang-Punggol LRT system | website=The Straits Times | date=15 February 2022 | url=https://www.straitstimes.com/singapore/transport/lta-awards-596m-contracts-for-trains-and-depot-expansion-on-sengkang-punggol-lrt-system | access-date=18 January 2025}}

The Sengkang LRT line is fully automatic and is equipped with a Kyosan APM fixed block signalling system.{{sfn|Kyosan Electric|n.d.|pp=4, 11}}{{cite web | title=VOL.54 2003 No.2 の概要 | website=Kyosan Electric | date=3 November 2004 | url=http://www.kyosan.co.jp/topics/circular/circu542.html | archive-url=https://web.archive.org/web/20050311082216/http://www.kyosan.co.jp/topics/circular/circu542.html | archive-date=11 March 2005 | url-status=dead | access-date=19 January 2025 |language=Japanese}} The line's automatic train control (ATC) is composed of automatic train protection (ATP) which ensures safe operations, automatic train operation (ATO) which controls the automatic operations, and automatic train supervision (ATS) for overall command, monitoring and recording of the system.{{sfn|Mochidome|Masukawa|2003|p=2}} To reduce equipment mass on the train, the onboard ATP and ATO systems are integrated into one unit, although for safety reasons, the function and control logic of the ATP and ATO systems remain independent.{{sfn|Mochidome|Masukawa|2003|p=6}} These subsystems are connected via LAN and managed by a computer-based interlocking (CBI) system that oversees traffic safety of the APM.{{sfn|Kyosan Electric|n.d.|p=4}}{{cite web |title=全体システム構成図 |language=Japanese|url=http://www.kyosan.co.jp/topics/circular/03v54/v2004z.jpg |access-date=18 January 2025 |archive-url=https://web.archive.org/web/20040814091822fw_/http://www.kyosan.co.jp/topics/circular/03v54/v2004z.jpg |archive-date=14 August 2004 |url-status=dead| publisher=Kyosan Electric}}

The power system of the SKLRT includes a 22 kV AC power intake and distribution network, a 750V DC traction power system, and a 400V AC system for station services. Power is supplied via two 22kV AC feeders from the North East line to improve reliability and take advantage of the 66kV tariff. The AC supply is distributed through a closed ring network to prevent power disruptions during single outages. At each station, the AC supply is stepped down to 400V AC using service transformers for mechanical and electrical needs. Traction power substations (TPSS) further step down the 22kV AC to power rectifiers that convert it to 750V DC for train operations. Each TPSS is equipped with an inverter system to return excess energy from regenerative braking back to the 22kV distribution network. In 2004, the SKLRT had three traction power substations (TPSS), with one on standby to maintain operations during outages;{{cite conference |last1=Thong |first1=T.L. Melvyn |last2=Yeo |first2=Kok Beng |last3=Chia |first3=Song Khoon |date=2004 |title=Aspects of testing and commissioning of power systems for RTS system with Sengkang LRT as case study |url=https://ieeexplore.ieee.org/document/1460308 |conference= |publisher=IEEE |volume=2 |pages=1880–1885 |doi=10.1109/ICPST.2004.1460308 |isbn=978-0-7803-8610-5 |url-access=subscription}} it presently has five operational substations, which will increase to eight with the planned expansion of Sengkang Depot.

File:SW8 Renjong LRT Platforms 20200830 185849.jpg

All Sengkang LRT stations are equipped with lifts connecting passengers from the ground level to the station concourse, and from the concourse to the platform level. Each station also has at least one wider faregate for wheelchair users and tactile flooring to guide the visually-impaired from the ground floor to the platforms.{{cite web | title=LRT: Station Facilities | publisher=SBS Transit | url=http://www.sbstransit.com.sg/transport/trpt_lrt_facilities.aspx | archive-url=https://web.archive.org/web/20170816122052/http://www.sbstransit.com.sg/transport/trpt_lrt_facilities.aspx | archive-date=16 August 2017 | url-status=dead | access-date=19 January 2025}}{{cite web | url=http://www.bca.gov.sg/BarrierFree/others/LTA.pdf | title=Facilities Provided for People with Disabilities in MRT/LRT Stations | publisher=Building and Construction Authority | access-date=1 November 2012 | archive-date=16 May 2011 | archive-url=https://web.archive.org/web/20110516033547/http://www.bca.gov.sg/BarrierFree/others/LTA.pdf | url-status=dead}} The stations are also equipped with fire extinguishers and fire phones. Emergency stop buttons on both sides of the station platform, when activated, cut off traction power supply and halt incoming trains.

Fixed platform barriers installed by Chee Yam Contractor are intended to prevent commuters falling to the tracks.{{cite web | title=C8123 – Design & Build Fixed Barriers for Light Rail Transit Stations | website=Chee Yam Contractor Pte Ltd | url=http://www.cheeyam.com.sg/project/c8123/ | access-date=20 January 2025 | archive-date=19 January 2025 | archive-url=https://web.archive.org/web/20250119131112/http://www.cheeyam.com.sg/project/c8123/ | url-status=live }}{{cite web | last=Tan | first=Christopher | title=Platform barriers at all LRT stations by 2018 to prevent falls | website=The Straits Times | date=21 October 2015 | url=https://www.straitstimes.com/singapore/transport/platform-barriers-at-all-lrt-stations-by-2018-to-prevent-falls | access-date=20 January 2025 | archive-date=1 January 2020 | archive-url=https://web.archive.org/web/20200101182230/https://www.straitstimes.com/singapore/transport/platform-barriers-at-all-lrt-stations-by-2018-to-prevent-falls | url-status=live }} However, the barriers lack doors and instead have fixed openings for boarding, as the limited space on LRT platforms cannot accommodate the power, communications, and signal control systems required for platform screen doors.{{cite web | last=Kok | first=Yufeng | title=2 deaths, 1 injury in last decade from falls on LRT tracks | website=The Straits Times | date=10 May 2023 | url=https://www.straitstimes.com/singapore/politics/2-deaths-1-injury-in-last-decade-from-falls-on-lrt-tracks | access-date=20 January 2025}}

To enhance safety, SBS Transit has implemented the VAnGuard track intrusion detection system on the SPLRT. Using video analytics and artificial intelligence, the system monitors footage of tracks and platforms to identify individuals or objects on the tracks.{{cite web |title=Driving Workplace Safety Forward: SBS Transit Unveils New Innovative Technologies at the Rail Safety Symposium – Annex |url=https://www.sbstransit.com.sg/Uploads/Whats%20New/Press%20Release%20Attachments/2023/Annex%20-%20Driving%20Workplace%20Safety%20Forward-SBS%20Transit%20Unveils%20New%20Innovative%20Technologies%20at%20the%20Rail%20Safety%20Symposium.pdf |publisher=SBS Transit |access-date=20 January 2025}} When an intrusion is detected, operations control centre staff can press the emergency stop button to halt services on a specific loop. The system also triggers an alarm when intruders or foreign objects are detected. In addition to track intrusions, the system can spot unattended items on station platforms, allowing staff to provide assistance or undertake security precautions.{{cite web | last=Yap | first=Gracia | title=All Sengkang-Punggol LRT stations to get track intrusion detection system in 2024 | website=The Straits Times | date=24 February 2024 | url=https://www.straitstimes.com/singapore/transport/all-sengkang-punggol-lrt-stations-to-get-track-intrusion-detection-system-in-2024 | access-date=20 January 2025}}

{{notelist}}

{{reflist}}

• {{cite report |author= |date=n.d. |title=APM Signaling System |url=https://www.kyosan.co.jp/english/product/pdf/catalog09_04.pdf |work= |location=Japan |publisher=Kyosan Electric |access-date=18 January 2025|ref={{sfnref|Kyosan Electric|n.d.}}}}
• {{cite report |last1=Mochidome |first1=Hiroyuki |last2=Masukawa |first2=Masahisa |date=June 2003 |title=Automated People Mover System "Crystal Mover" for Singapore's LTA |url=https://www.mhi.co.jp/technology/review/pdf/e403/e403144.pdf |location=Japan |publisher=Mitsubishi Heavy Industries |access-date=18 January 2025}}

• {{commons category-inline|Sengkang Light Rail Transit Line}}
• [https://web.archive.org/web/20160324123026/http://www.lta.gov.sg/content/ltaweb/en/public-transport/projects/sengkang-lrt.html 2016 official LTA website of the Sengkang LRT line]
• [https://www.lta.gov.sg/content/ltagov/en/getting_around/public_transport/rail_network/sengkang_punggol_lrt.html Current LTA website]

{{Singapore LRT stations|sengkang=yes}}

{{Rail transport in Singapore}}

{{Authority control}}

Category:Light Rail Transit (Singapore) lines

Category:Sengkang

Category:Crystal Mover people movers

Category:Railway lines opened in 2003

Category:Transport in North-East Region, Singapore

Category:2003 establishments in Singapore

Category:Automated guideway transit