Light Rail Transit (Singapore) Explained

Light Rail Transit (LRT)
Locale:Singapore
Transit Type:Automated guideway transit / People mover
System Length:302NaN2
Lines:3
Stations:42
Ridership:208,000 (2019)[1]
Track Gauge:Bukit Panjang

2642frac=8NaNfrac=8
Sengkang & Punggol: (guide rail span: 3.2m (10.5feet))

El:Third rail (Bukit Panjang: 600 volts 3-phase AC at 50 Hz, Sengkang & Punggol: 750 volts DC)
Operator:SBS Transit Ltd (ComfortDelGro Corporation)
SMRT Trains Ltd (SMRT Corporation)
Owner:Land Transport Authority
Vehicles:~89 trainsets
Top Speed:50-

The Light Rail Transit system, locally known by the initialism LRT, are a series of localised automated guideway transit (AGT) systems in Singapore which acts as feeder services to the heavy rail Mass Rapid Transit (MRT), and together forms the core of the country's rail transport services. The first LRT line was opened in 1999 and the system has since expanded to three lines, each serving three new towns, namely Bukit Panjang, Sengkang and Punggol, with a total system length of approximately . Trains on these lines have at least one station interchange link to the MRT.

The conventional definition of light rail generally refers to an upgraded form of tram that uses articulated low-floor tram cars and partial grade separation; in some cases such as the Docklands Light Railway (DLR) in London or the Skytrain in Vancouver, LRT refers to a medium-capacity rail-based light metro system. However, the term "LRT" in Singaporean parlance refers to rubber-tired automated people mover (APM) trains that are more comparable to the Metromover in Miami, the Macau Light Rapid Transit and those found in airport people mover systems, including the Changi Airport Skytrain.[2]

Along with the MRT, the LRT is constructed and owned by the Land Transport Authority (LTA), with operating concessions currently handed to SMRT Trains Ltd, a subsidary of SMRT Corporation, and SBS Transit Ltd, a subsidary of ComfortDelGro. With the completion of Singapore's three LRT lines, there are currently no plans for further LRT networks in the future, aside from linking existing LRT stations to newer MRT lines.[3] [4]

History

Conception

In September 1991, the Urban Redevelopment Authority (URA) unveiled the revised Concept Plan 1991, which proposed a new mode of feeder rail that could serve new towns such as Yishun and Tampines. Such systems were to be fully automated and elevated light rail systems to serve as faster alternatives to existing feeder buses.[5]

In 1994, then Communications Minister Mah Bow Tan tasked the Mass Rapid Transit Corporation (MRTC) to study the use of an LRT in Singapore, particularly as an internal feeder service for new towns. In particular, two towns, Bukit Panjang and Sengkang, were to be studied for the feasibility of the LRT. MRTC also commissioned British consultant, Oscar Faber TPA, to conduct a feasibility study for an LRT system in the Beach Road/Nicoll Highway corridor in anticipation of the increased demand for transport services in the area due to several major developments such as Suntec City, Marina Centre and Shenton Way. On 3 December that year, Mah announced the government's intentions to pilot two LRT systems at Bukit Panjang and Buona Vista. New LRT systems were also suggested for more mature towns such as Toa Payoh although further decisions were only to be made after the pilot programmes were conducted.[5] Eventually, the proposed LRT around Buona Vista was cancelled due to insufficient demand for the rail line.[5] [6]

In 1995, study trips were made to the SK and Véhicule Automatique Léger (VAL) systems in France to study on the feasibility of building LRT systems near HDB public flats and integration of the LRT with other public transport modes as well as the H-Bahn suspended monorail system in Germany to study into the possibility of implementing such a system for Singapore Polytechnic and the National University of Singapore.[5]

In 1996, the Land Transport Authority (LTA), which was formed from the merger of several transport statutory boards including MRTC in 1995, published a White Paper which outlined its goals for a world-class transport system in Singapore, one of which was the utilisation of LRT systems as feeder services to the MRT network, and the integration of LRT facilities with HDB estates to maximise convenience for residents.[5]

In addition to using the LRT system as feeder service, the government also studied into the feasibility of using it to connect neighbouring towns with one another, such as Bedok-Tampines, Ang Mo Kio-Bishan-Toa Payoh, and the Jurong areas.[5]

Punggol LRT line North Branch

A North Branch consisting of two to four LRT stations for the Punggol LRT line had been planned, which would have brought commuters from Punggol LRT station via Sam Kee and Teck Lee LRT station before branching out from the West Loop tracks onto this branch, terminating near Coney Island.

The branch was eventually never built and was only visible in the planning stages of Punggol LRT since 2000.[7] It was eventually replaced by more bus services and a Punggol Coast MRT station on the North East Line (NEL) to better serve commuters in the area.[8]

Jurong Region LRT line

A light rail network was proposed in 2001 which would have served the western regions of Singapore such as Jurong. It was also envisioned to serve commuters travelling to Nanyang Technological University (NTU).[9] However, the LTA announced in 2008 that there were no plans for the line to be built.[10] The project was later revived with the release of the Land Transport Master Plan 2013, in the form of the Jurong Region MRT line. It is set to open in stages from 2027 to 2029.[11] [12]

Opening of lines

The Bukit Panjang LRT line opened on 6 November 1999, with all 14 stations opening at the same time. Ten Mile Junction LRT station was closed from 10 December 2010 till 30 December 2011 for retrofitting works due to the closure and redevelopment of Ten Mile Junction shopping mall (now known as Junction 10), making it the first MRT/LRT station to be completely closed in Singapore after opening. The station was closed permanently from 13 January 2019 due to low demand. The closure of the station also led to the cessation of Bukit Panjang LRT Service C, formerly running from this station and looping in Bukit Panjang town via Senja. The vacated station was converted to Ten Mile Junction Depot Extension. This was also the first ever MRT and LRT station in Singapore's history to be permanently closed and removed from operations. It is the first and only LRT line to be operated by SMRT Light Rail.

The Sengkang LRT line opened in two main stages, the East Loop opening first on 18 January 2003 and most of the West Loop on 29 January 2005. Farmway LRT station on the West Loop subsequently opened on 15 November 2007. On 1 January 2013, Cheng Lim LRT station opened for passenger service and the west loop now operated in both directions.[13] The last station on the line to be opened, Kupang opened for passenger service on 27 June 2015.[14]

For the Punggol LRT line, the East Loop started operating on the same day as the Sengkang LRT's West Loop, with two stations closed. Oasis LRT station was opened for service on 15 June 2007, after more residents moved into HDB flats in the station's vicinity.[15] Damai LRT station opened on 20 June 2011.[16] The West Loop opened on 29 June 2014 at 11.15 am, with Nibong, Sumang and Soo Teck being the first stations to open.[17] Sam Kee, Punggol Point and Samudera opened on 29 February 2016, 29 December 2016 and 31 March 2017 respectively.[18] [19] The last station on the line to be opened, Teck Lee LRT station opened for passenger service on 15 August 2024.[20]

Improvements

Bukit Panjang LRT

For the Bukit Panjang LRT line, SMRT and LTA announced plans to completely overhaul the BPLRT system as the system is reaching its lifespan of 20 years.[21] Transport Minister Khaw Boon Wan has also announced plans to shut the Bukit Panjang LRT down for a small number of years to pave the way for the system's overhaul.[22] On 23 October 2017, SMRT announced that the Bukit Panjang Light Rail Transit (BPLRT) system will begin operations at 7 am, instead of 5.30am, on all Sundays from 12 November 2017 until the end of the year, to allow more time for works to improve service reliability.[23]

On 23 March 2018, SMRT said that the Bukit Panjang LRT line will be closed on 11 Sundays from 15 April 2018 to 24 June 2018 as part of maintenance works aimed to improve the reliability of the beleaguered system.[24] [25]

On 21 June 2018, SMRT said from 1 July 2018 to 28 October 2018, all BPLRT stations will open on Sundays at 8am, instead of the usual 5.30am.[26] [27]

On 12 January 2019, Ten Mile Junction served its last passengers and closed on the next day, 13 January 2019. It also marks the end of Service C on the Bukit Panjang LRT.

Sengkang–Punggol LRT

On 31 October 2012, LTA announced that by 2016, Sengkang and Punggol LRT systems will be upgraded to a two-car system for 16 of the 41 existing train cars, allowing double the number of passengers to board at any one time. Each train car can take up to 105 passengers. Hence, there is also the need to modify the signaling and communication system.[28]

On 22 December 2015, the two-car trains entered service on the Sengkang LRT line, boosting capacity to 204 per trip as compared to 105 in a single car configuration.[29]

As of 2017, two car trains have entered service on the Punggol LRT line.[18]

On 15 December 2017, the Land Transport Authority said there will be limited services on parts of the Sengkang-Punggol LRT (SPLRT) on most Sundays from 14 January 2018 to 25 February 2018, to facilitate renewal and improvement works from (except 18 February as it was a Chinese New Year holiday). Only one platform will open for service at 5.30am on Sundays. The other platform will open from 7am.[30] [31] [32] The arrangement continued until 29 April 2018.[33] [34]

On 14 February 2018, the LTA announced that it has taken over SBS Transit's rail assets (the North East MRT line and Sengkang-Punggol LRT lines) worth $30.8 million and transit to the New Rail Financing Framework on 1 April 2018.[35] The LTA has also said that this will benefit commuters as there will be "more coordinated and timely expansion, and renewal of the rail system".[36]

From 27 May 2018 to 7 October 2018, limited services on Sundays will continue on the Sengkang-Punggol LRT (SPLRT). One platform will open at 5.30am and the other platform will open at 5.30pm.[37] [38]

On 5 February 2021, the Land Transport Authority announced that it has purchased 17 two-car trains for the Sengkang and Punggol LRT systems. The new trains will be delivered progressively from 2024 to 2027. In addition to new trains, the Sengkang Depot will also be expanded to 11.1 ha from the existing 3.5 ha to ensure that is capacity and maintenance space for the new trains. The expansion of the depot will also see two new reception tracks being built to shorten the train launching time. To ensure there is enough electricity to support the larger fleet of trains, 3 new power stations will be built, increasing the total number of power stations supporting the system to 8 once completed.[39]

Infrastructure

Network

Line and liveryOpening yearTerminalStationsLength (km)DepotLine voltage
SMRT Trains
Bukit Panjang LRT1999 Choa Chu Kang13 7.6 Ten Mile Junction Depot600 V 3-phase AC at 50 Hz
SBS Transit
Sengkang LRT2003 Sengkang (East Loop)5 10.7Sengkang Depot750 V DC
2005 Sengkang (West Loop)8
Punggol LRTPunggol (East Loop)7 10.3
2014 Punggol (West Loop)7
Total:4228.6

Facilities

Since the LRT system was built in the 1990s, plans for barrier-free facilities have already been included during the planning stages. All 43 stations are equipped with such facilities, thus there will be no difficulties present for the old and handicapped. Barrier-free facilities include lifts, ramps, a tactile guidance system and wider faregates. These barrier-free facilities will be included in all future LRT stations.[40]

Lines

Bukit Panjang LRT (BPLRT)

See main article: Bukit Panjang LRT Line. The Bukit Panjang LRT Line (BPLRT) is the first light rail line in Singapore. Spanning 7.6 km and consisting of 13 stations, the entire line opened in 1999 and is the first and only LRT line to be operated by SMRT Trains.[41]

Sengkang LRT (SKLRT)

See main article: Sengkang LRT line. The Sengkang LRT (SKLRT) is a 10.7 km light rail line which partially opened on 18 January 2003. It is part of the LRT system together with the other two lines. The East Loop has 5 stations, all operational, from Compassvale to Ranggung whereas the West Loop has 8 stations from Cheng Lim to Renjong. On 27 June 2015, Kupang opened, making it the last station on the Sengkang LRT to be opened. The completion of several new residential developments in the area deemed it suitable to operate after 12 years.[42]

Punggol LRT (PGLRT)

See main article: Punggol LRT line. The Punggol LRT (PGLRT) is a light rail line in Singapore within the LRT system together with the other two lines. Its first phase, which comprises a 10.3 km light rail line with 15 stations, began operating on 29 January 2005 (with the exception of Oasis, which was opened on 15 June 2007 and Damai, which was opened on 20 June 2011) whereas Nibong, Sumang and Soo Teck were opened on 29 June 2014, the rest of the stations are not opened as Punggol was halfway developed. Subsequently, Sam Kee opened on 29 February 2016, Punggol Point opened on 29 December 2016 while Samudera opened on 31 March 2017 as the area around the stations became more developed. Teck Lee opened on 15 August 2024, making it the last station on the Punggol LRT to be opened.[43]

Rolling stock

LineFamilyNameNo.
of Trains
Service StartService EndSpeed LimitNotes
Bukit PanjangBombardier Innovia APM 100C8011919992025Initially named the CX-100. Gradually decommissioned since 2023 to be superseded by the APM 300 C801B
C801A132014
Bombardier Innovia APM 300C801B192024Superseding the APM 100 C801
Sengkang and PunggolMitsubishi Crystal MoverC810412003
C810A162016
C810D342025
The trains on the LRT system are fitted with rubber tyres, rather than steel wheels, on specially-constructed guideways from which its power is also sourced. All cars are fully automated and driverless, and are controlled from their respective depots.

Signalling

All lines are capable of fully automatic operation, where they can operate driverless and unattended.

The following list documents the systems:

LineSupplierSolutionTypeCommissioningLength (km)CentreRemarks
Bombardier[44] CITYFLO 550[45] Fixed block 1999 7.8 To be decommissioned by 2025
Kyosan APM Signalling[46] 2003/2005 10.7
2005/2014 10.3
Future
Bukit Panjang LRT Bombardier CITYFLO 650 Moving block; CBTC 2024 7.8 Ten Mile Junction Depot

Depots

The LRT system consists of two depots, which run the maintenance, inspection, train overhaul facilities, and houses the train cars overnight. The Ten Mile Junction Depot houses train cars for Bukit Panjang LRT, and the Sengkang Depot houses train cars for both the Sengkang-Punggol LRT (SPLRT) and the North East Line (NEL) of the Mass Rapid Transit (MRT).

In 2021, LTA announced plans for the expansion of the LRT section of Sengkang Depot. The expanded depot will provide increased stabling capacity, a new maintenance workshop and two new reception tracks to boost the Sengkang-Punggol LRT's (SPLRT) capacity. In addition, the existing power supply systems will be enhanced and three new traction power stations will be added to the existing five for improved traction power to support the additional trains. Expansion works are began in 2021 and is scheduled to be completed by 2027.[47] [48]

Fares and ticketing

See main article: Fares and ticketing on the Mass Rapid Transit (Singapore). The Light Rail Transit uses the same ticketing system as the Mass Rapid Transit, accepting the contactless EZ-Link smart card and tourist passes. Single-trip tickets are not sold; fares can only be purchased via contactless card (EZ-Link or tourist pass, both stored-value cards).

Instead of using turnstile faregates, all stations on the Bukit Panjang LRT Line now use retractable faregates instead which is faster and easier and the replacement was completed in 2017.

Safety

By 2018, glass and steel platform barriers were installed at all 43 LRT stations to prevent people from falling onto the tracks. Unlike the ones in overground MRT stations, the LRT structures will not have sliding doors but fixed openings. The barriers have been erected at Choa Chu Kang and Bukit Panjang LRT stations in anticipation of higher commuter traffic with the opening of Downtown Line to Bukit Panjang. This was followed by the rest of the stations on the Bukit Panjang and Sengkang-Punggol LRT lines in 2018.[49]

The installation of these barriers was completed at all LRT stations in 2017.[50]

See also

Notes and References

  1. Web site: Average Public Transport Ridership (2015 to 2019). LTA. 10 August 2021. 10 August 2021. https://web.archive.org/web/20210810054011/https://www.lta.gov.sg/content/dam/ltagov/who_we_are/statistics_and_publications/statistics/pdf/PT_Ridership_2015_2019.pdf. live.
  2. Web site: Tai Chong Chew . Chong Kheng Chua . Development of Singapore's Rapid Transit System and The Environment . ejrcf.or.jp . East Japan Railway Culture Foundation . 24 June 2024 . https://web.archive.org/web/20210428024811/https://www.ejrcf.or.jp/jrtr/jrtr18/pdf/f26_singapore.pdf . 28 April 2021 . December 1998.
  3. Web site: A Journey into Singapore MRT's past. Remember Singapore. 23 July 2013. 2 October 2019. 15 November 2019. https://web.archive.org/web/20191115183826/https://remembersingapore.org/2013/07/23/singapore-mrt-history/amp/. live.
  4. Web site: 15 Interesting Facts About The MRT You Probably Didn't Know. GoodyFeed. 17 September 2015. 25 February 2020.
  5. Web site: Infopedia: First Light Rail Transit System. 2019-10-26. 26 October 2019. https://web.archive.org/web/20191026152142/https://eresources.nlb.gov.sg/infopedia/articles/SIP_538_2005-01-05.html. live.
  6. Web site: Of LRT disruptions and political pressure. Toh. Elgin. The Straits Times. 2 October 2017. 20 May 2019. 6 July 2019. https://web.archive.org/web/20190706112359/https://www.straitstimes.com/opinion/of-lrt-disruptions-and-political-pressure. live.
  7. Web site: Mitsubishi Heavy Industries Crystal Mover. Mitsubishi Heavy Industries America, Inc.. 27 May 2019.
  8. Web site: LTA 2040 Land Transport Master Plan. Land Transport Authority. 27 May 2019. 3 September 2019. https://web.archive.org/web/20190903060911/https://www.lta.gov.sg/content/dam/ltaweb/corp/AboutUs/files/LTMP2040_May2019/LTA%20LTMP%202040%20eReport%20FA%20hires.pdf. dead.
  9. Web site: More MRT, LRT Lines. The Straits Times (retrieved from NLB). 21 February 2022. 24 October 2001. 20 February 2022. https://web.archive.org/web/20220220175131/https://eresources.nlb.gov.sg/newspapers/Digitised/Article/today20011024-1.2.11.1. live.
  10. Web site: No Plans To Develop Jurong LRT For Now. Land Transport Authority. 26 May 2008. 31 December 2017. 6 October 2017. https://web.archive.org/web/20171006012033/https://www.lta.gov.sg/apps/news/page.aspx?c=3&id=51. live.
  11. Web site: TWO NEW RAIL LINES AND THREE NEW EXTENSIONS TO EXPAND RAIL NETWORK BY 2030 . Land Transport Authority . 17 January 2013 . dead . https://web.archive.org/web/20140706170425/http://app.lta.gov.sg/apps/news/page.aspx?c=2&id=38dc4ca3-5e70-4bf8-97bc-87f78e6303e7 . 6 July 2014.
  12. Web site: Jurong Region Line to serve NTU, Tengah estate, Jurong Industrial Estate. Channel NewsAsia. en. 2019-03-21. 21 September 2019. https://web.archive.org/web/20190921084041/https://www.channelnewsasia.com/news/singapore/jurong-region-line-mrt-stations-open-2026-10216126. live.
  13. Web site: Cheng Lim LRT Station To Open And Sengkang West LRT to Run in Both Directions . SBS Transit . 21 December 2012 . 21 December 2012 . 24 December 2012 . https://web.archive.org/web/20121224110914/http://www.sbstransit.com.sg/press/2012-12-21-01.aspx . live.
  14. Web site: Kupang LRT Station to open on Saturday, 27 June 2015 . SBS Transit . 15 June 2015 . 15 June 2015 . 24 November 2015 . https://web.archive.org/web/20151124090502/https://www.sbstransit.com.sg/download/kupang_lrt_station.pdf . live.
  15. Web site: Opening of Oasis LRT Station . SBS Transit . June 2007 . 12 October 2013 . 14 October 2013 . https://web.archive.org/web/20131014002105/http://www.sbstransit.com.sg/press/2007-06-14-01-S.aspx . live.
  16. Web site: SBS Transit Opens Woodleigh and Damai Stations . SBS Transit . 8 March 2011 . 12 October 2013 . 7 July 2017 . https://web.archive.org/web/20170707111530/http://www.sbstransit.com.sg/press/2011-03-08-01.aspx . live.
  17. Web site: Punggol West LRT System to Commence Passenger Service and North East Line to Add More Train Trips . SBS Transit . 18 June 2014 . 29 June 2014 . 22 June 2014 . https://web.archive.org/web/20140622173840/http://www.sbstransit.com.sg/press/2014-06-18-01.aspx . live.
  18. Web site: Commencement of Two-Car Operations on Punggol LRT East Loop & Opening of Punggol Point LRT Station on 29 December 2016. SBS Transit. 29 December 2016. 4 January 2017. 4 January 2017. https://web.archive.org/web/20170104233548/https://www.sbstransit.com.sg/press/2016-12-29-01.aspx. live.
  19. Web site: Sam Kee Station on Punggol LRT System to open for Passenger Services . SBS Transit . 18 February 2016 . 4 January 2017 . 1 March 2016 . https://web.archive.org/web/20160301133842/https://www.sbstransit.com.sg/press/2016-02-18-01.aspx . live.
  20. Web site: Teck Lee LRT station in Punggol opens nearly 20 years after it was built. The Straits Times. 15 August 2024 . 16 August 2024.
  21. Web site: SMRT reveals options to overhaul ageing Bukit Panjang LRT System. 2017-10-24. 28 November 2016. https://web.archive.org/web/20161128014147/http://www.channelnewsasia.com/news/singapore/smrt-reveals-options-to-overhaul-ageing-bukit-panjang-lrt-system/3184728.html. dead.
  22. Web site: Stolarchuk . Jewel . 17 October 2017 . Govt may shut down Bukit Panjang LRT for at least 3 years: Khaw Boon Wan . live . https://web.archive.org/web/20171019111830/http://www.theindependent.sg/govt-may-shut-down-bukit-panjang-lrt-for-at-least-3-years-khaw-boon-wan/ . 19 October 2017 . 24 October 2017 . The Independent.
  23. News: BPLRT to start running later on Sundays from 12 Nov for renewal works. Cheng. Kenneth. 23 October 2017. TODAY Online. 3 November 2017. 24 October 2017. https://web.archive.org/web/20171024104429/http://www.todayonline.com/singapore/bplrt-start-running-later-sundays-nov-12-renewal-works. live.
  24. News: Bukit Panjang LRT to close for 11 Sundays for maintenance works starting 15 April. hermesauto. The Straits Times . 23 March 2018. 8 April 2018. 12 April 2018. https://web.archive.org/web/20180412173352/http://www.straitstimes.com/singapore/transport/bukit-panjang-lrt-to-close-for-11-sundays-for-maintenance-works-starting-april. live.
  25. Web site: Reliability on Bukit Panjang LRT to 'improve significantly', but works won't solve bumpiness issues. 8 April 2018. 24 August 2019. https://web.archive.org/web/20190824060300/https://www.channelnewsasia.com/news/singapore/bukit-panjang-lrt-reliability-renewal-signalling-system-lta-10070996. live.
  26. News: Bukit Panjang LRT to resume Sunday operations in July with later opening time. The Straits Times . 21 June 2018. 21 June 2018. 7 June 2019. https://web.archive.org/web/20190607155125/https://www.straitstimes.com/singapore/transport/bukit-panjang-lrt-to-resume-sunday-operations-in-july-but-with-later-opening. live.
  27. Web site: Bukit Panjang LRT to resume operations on Sunday on July 1, but with later opening time. 21 June 2018. 24 August 2019. https://web.archive.org/web/20190824060244/https://www.todayonline.com/singapore/bukit-panjang-lrt-resume-operations-sunday-july-1-later-opening-time. live.
  28. Web site: 2-car System for Sengkang Punggol LRT by 2016; Improvements to Choa Chu Kang LRT Station . Land Transport Authority . 31 October 2012 . 12 October 2013 . dead . https://web.archive.org/web/20131022195642/http://app.lta.gov.sg/apps/news/page.aspx?c=2&id=8a70fc51-fd2a-4793-ac12-700db7586496 . 22 October 2013.
  29. Web site: 2-car trains roll out on Sengkang LRT . The Straits Times . 24 December 2015 . 31 December 2015 . 28 October 2017 . https://web.archive.org/web/20171028093848/http://www.straitstimes.com/singapore/transport/2-car-trains-roll-out-on-sengkang-lrt . live.
  30. Web site: Limited Sengkang-Punggol LRT services on Sunday mornings from Jan to Feb. 2017-12-15. 19 December 2017. 16 December 2017. https://web.archive.org/web/20171216201515/https://www.channelnewsasia.com/news/singapore/limited-service-along-sengkang-punggol-lrt-on-sundays-in-jan-feb-9502364. live.
  31. Web site: Limited Sengkang-Punggol LRT services on Sunday mornings from 14 Jan. 2017-12-15. 19 December 2017. 21 December 2017. https://web.archive.org/web/20171221084358/http://www.todayonline.com/singapore/works-sengkang-punggol-lrt-system-will-see-limited-services-sunday-mornings-jan-14. live.
  32. Web site: Limited service along Sengkang-Punggol LRT on Sundays in Jan, Feb to facilitate rail works. channelnewsasia.com. 15 December 2017. 19 December 2017. 18 December 2017. https://web.archive.org/web/20171218235208/http://www.straitstimes.com/singapore/transport/limited-service-on-sundays-for-sengkang-punggol-lrt. live.
  33. Web site: Maintenance work to resume on Sengkang and Punggol LRT systems on 4 Mar. channelnewsasia.com. 24 March 2018. 23 February 2018. https://web.archive.org/web/20180223171302/https://www.channelnewsasia.com/news/singapore/maintenance-work-to-resume-on-sengkang-and-punggol-lrt-systems-9981524. live.
  34. Web site: Maintenance works to resume on Sengkang and Punggol LRT systems. hermesauto. 22 February 2018. straitstimes.com. 24 March 2018. 23 February 2018. https://web.archive.org/web/20180223171526/http://www.straitstimes.com/singapore/transport/maintenance-works-to-resume-on-sengkang-and-punggol-lrt-systems. live.
  35. Web site: North-East Line, Sengkang and Punggol LRTs to move to new financing framework. channelnewsasia. 14 February 2018. 22 February 2018. 29 August 2018. https://web.archive.org/web/20180829072119/https://www.channelnewsasia.com/news/singapore/north-east-line-sengkang-and-punggol-lrts-to-move-to-new-9960566. dead.
  36. Web site: LTA to take over SBS Transit rail assets worth $30.8m. Abdullah. Zhaki. straitstimes. 15 February 2018. 22 February 2018. 22 February 2018. https://web.archive.org/web/20180222225617/http://www.straitstimes.com/singapore/transport/lta-to-take-over-sbs-transit-rail-assets-worth-308m. live.
  37. Web site: SBS Transit extends limited service on Sundays for Sengkang, Punggol LRT to October. hermesauto. 11 May 2018. straitstimes.com. 15 May 2018. 14 May 2018. https://web.archive.org/web/20180514213504/https://www.straitstimes.com/singapore/transport/sbs-transit-extends-limited-service-on-sundays-for-sengkang-punggol-lrt-to. live.
  38. Web site: Limited service hours on Sundays for Sengkang-Punggol LRT to be extended. todayonline.com. 15 May 2018. 15 May 2018. https://web.archive.org/web/20180515043515/https://www.todayonline.com/singapore/limited-service-hours-sundays-sengkang-punggol-lrt-be-extended. live.
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