The Mass Rapid Transit system, commonly known as the MRT, is a rapid transit system that makes up the railways in Singapore, covering most of the city-state. Following two decades of planning, the system began operations in November 1987 with 5 stations spread over  of track. The network has since grown quickly in accordance with Singapore's aim of developing a complex rail network as the core of the country's public transportation system, averaging a daily ridership of 3.384 million in 2019.

It is a rapid transit system which links the different places of Singapore together using a network, or different connections of trains. When a person travels from one place to another, he or she boards a train in a train station and then the train moves until the train reaches the place he or she wants to come out, or alight from. Sometimes he or she has to change trains.

Overview 
About 3.3 million passengers use the MRT everyday. The system is 199.6 km long and has 119 stations. Trains run from 5:30 am to 1:00 am every day except for the festive periods, such as Christmas Eve, New Year's Eve and Chinese New Year's Eve. A train comes every 2–3 minutes in peak hours, every 7 minutes during off-peak hours and 5–6 minutes for the weekend service. It is operated by Singapore's SMRT Corporation and SBS Transit.

There are currently 5 lines in the MRT system, where they are connected by special stops called interchanges. The lines are North South Line, East West Line, North East Line, Circle Line and Downtown Line. The Circle Line opened in four stages from 28 May 2009 to 14 January 2012. Stage 1 of Downtown Line opened on 22 December 2013 with its official opening made on 21 December 2013 by Prime Minister Lee Hsien Loong.

On 16 December 2011, the MRT network suffered what is likely to be the worst breakdown in its 24-year operating history. 'A power rail problem' made North-South Line trains suddenly lose power and stopped in darkness and without air conditioning for up to an hour accompanied only by light from mobile phones.

Network

Openings 
 7 November 1987: Yio Chu Kang - Toa Payoh
 12 December 1987: Toa Payoh - Outram Park
 12 March 1988: Outram Park - Clementi
 5 November 1988: Clementi - Lakeside
 20 December 1988: Yio Chu Kang - Yishun
 4 November 1989: Marina Bay - Tanah Merah
 16 December 1989: Tanah Merah - Pasir Ris
 10 March 1990: Jurong East - Choa Chu Kang
 6 July 1990: Lakeside - Boon Lay
 10 February 1996: Yishun - Choa Chu Kang
 10 January 2001: Tanah Merah - Expo
 18 October 2001: Dover
 8 February 2002: Expo - Changi Airport
 20 June 2003: HarbourFront - Punggol
 28 February 2009: Boon Lay - Joo Koon
 28 May 2009: Bartley - Marymount
 17 April 2010: Bartley - Dhoby Ghaut
 8 October 2011: Marymount - HarbourFront
 14 January 2012: Promenade - Marina Bay
 22 December 2013: Bugis - Chinatown
 23 November 2014: Marina Bay - Marina South Pier
 27 December 2015: Bukit Panjang - Bugis
 18 June 2017: Joo Koon - Tuas Link
 21 October 2017: Chinatown - Expo
 2 November 2019: Canberra MRT station

Expansion 
The MRT system only had two lines, the North South and East West Lines, for more than ten years until the opening of the North East Line in 2003. While plans for these lines, as well as those being built, were made long before, the Land Transport Authority's (LTA) proposal named "A World Class Land Transport System" in 1996 showed that the government wanted to greatly expand on the existing system. The plans allow for the long-term replacement of the bus network by rail-based transportation as the main way of public transportation. It called for the expansion of the 67 kilometres of track in 1995 to over 360 in the year 2030. It was expected that daily ridership in 2030 would have grown to 6.0 million from the current 1.4 million passengers.

Thomson-East Coast Line
The 43-kilometre Thomson-East Coast Line is planned to be completed by 2024 and consists of 32 stations. It will connect to the North South Line at Woodlands station, Orchard and Marina Bay, to the Circle Line at Thomson, Caldecott and Marina Bay, to the Downtown Line at Stevens and Sungei Bedok, and to the East West and North East lines at Outram Park. The first part, or stage, will open by the end of 2019.

The Thomson-East Coast Line was a result of a joining of two separate lines, the Thomson Line and the Eastern Region Line, which was announced on 15 August 2014. The Thomson Line consisted of the part from Woodlands North to Marina Bay, while the Eastern Region Line consisted of the rest of the joined line.

A new extension to the line was announced on 25 May 2019. The new extension will connect the line to Singapore Changi Airport, allowing people arriving from the airport to go to the city without changing to another train. The tracks of the East West MRT line that currently go to the airport will also be used by this extension, which means that trains on the line will go all the way to Tanah Merah station, and there will be no more East West line trains using these tracks. This extension will open by 2040.

North East Line Extension

To be opened by 2023, the 2-kilometre extension will run from Punggol through Punggol North including the new Punggol Downtown. The extension is for future residents in Punggol North to have train access to the city centre as well as other parts of Singapore.

Downtown Line 

The Downtown Line was built in three stages, with the first opening in 2013, the second in 2015, and the third in 2017. An extension to the third stage, known as Stage 3e, will open in 2024, being 2.2 kilometres long and with two more stations. On 7 March 2015, Senior Minister of Stage for Transport Janil Puthucheary said that there will be a new station called Hume, to be built between the already open stations of Hillview and Beauty World. This station will open in 2025. When Hume opens, the line will be 42 kilometres long and have 37 stations.

On 25 May 2019, the Land Transport Authority announced another extension to the second stage of the line to a new station, Sungei Kadut MRT station. This extension will open in the mid-2030s.

Circle Line Stage 6

To be opened by 2025, the 4-kilometre extension will run from Marina Bay through Keppel, ending at HarbourFront, making the Circle Line a full continuous circle.

Jurong Region Line

First proposed as a LRT line when originally announced in 2001, the Jurong Region Line is now going to be a medium capacity line. The new plan will serve West Coast, Tengah and Choa Chu Kang and Jurong. The line will open in stages from 2026.

Cross Island Line

The 50-kilometre Cross Island Line will go across the island of Singapore, passing through Tuas, Jurong, Sin Ming, Ang Mo Kio, Hougang, Punggol, Pasir Ris and Changi. The addition of the new line brings commuters with another way for east–west travel to the current East West Line. It will also connect to all the other major lines to serve as a key transfer line, adding to the role currently fulfilled by the orbital Circle Line. The first stage will open by 2029, and other stages are expected to open by 2031.

Brickland and Sungei Kadut MRT stations 
On 25 May 2019, the LTA announced two new stations to be built on the North South line. Brickland station will be built between Bukit Gombak and Choa Chu Kang, while Sungei Kadut will be built between Yew Tee and Kranji. Both stations will open in the mid-2030s.

Possible new line along north-east area 
In the LTA's Land Transport Master Plan (LTMP) 2040, there will be studies to see if a new line can be built, between Woodlands, and Greater Southern Waterfront areas. If the line is built, it will be about 30 kilometres long, and will be completed as early as 2040. The line could serve around 400,000 houses, and lower the time needed for travel to the city by up to 40 minutes.

Facilities at the stations 

Every station has ticket machines, restrooms (toilets), a passenger service center, which controls what is happening in the train station and has wired radio with the train operator, payphones (public phones) and access for disabled. Some of them have automated teller machines, kiosks and a bus interchange nearby.

All stations in Singapore are either elevated or underground, with the exception of Bishan. Underground stations and trains are air-conditioned and have full-height platform screen doors. Elevated stations have half-height platform screen doors.

Rolling stock 
A total of 11 types of rolling stock are used on the MRT lines. Almost all of them are powered by 750 voltage current from a third rail, except those on the North East MRT Line, which uses 1500 voltage current from overhead wires.

For the East West and North South Lines, six types of rolling stock are used. The oldest is the C151, built in 1986-89 by a collaboration between Kawasaki Heavy Industries and three sub-companies, Kinki Sharyo, Nippon Sharyo and Tokyu Car Corp. 66 trainsets are in operation, which were upgraded between 2006 and 2008. 19 more C651s were purchased in 1994 from Siemens AG, followed by 21 more C751B sets, built in 1999-2000 by Kawasaki Heavy Industries and Nippon Sharyo. Two companies, Kawasaki Heavy Industries and CSR Sifang, have collaborated to build 3 types of rolling stock. The fourth rolling stock in operation is the C151A. They were built between 2010 and 2014, and started operations in 2011. The next rolling stock that started operations is the C151B, which began operations on 16 April 2017. The newest rolling stock, being built between 2017 and 2018, is the C151C, and it began operations on 30 September 2018.

On the North East Line, 25 six-car trainsets of the C751A were built from 1999 to 2002 by Alstom. A further 18 trainsets, the C751C, were built by Alstom and Shanghai Electric and entered operation on 1 October 2015.

For the fourth MRT line, the Circle Line, 40 three-car trainsets of C830s were built from 2005 to 2008 and began operations in 2009. Together with the C751Cs, the same companies made 24 C830C trainsets which began operations on 26 June 2015.

For the fifth MRT line, the Downtown Line, 73 three car C951s were built by Bombardier Transportation and began operations in 2013. An additional 15 trains and a final 4 trains were ordered, bringing the total number of C951s to 92 trainsets.

For the future Thomson-East Coast Line which is being built, 91 four-car trainsets of CT251 rolling stock are being built and will be delivered between 2018 and 2021, and will begin operations from 2019.

Fares and ticketing 
Stations are divided into two areas, paid and unpaid, which allow the rail operators to collect fares by controlling entry only through the fare gates, also known as access control gates. These gates, connected to a computer system, are able to read and change electronic tickets that can store data, and can store information such as the initial and destination stations and the duration for each trip. General Ticketing Machines sell tickets for single trips or allow the customer to purchase more value for stored-value tickets. Standard tickets can be used up to 6 times within 30 days from the day of purchase. The machines also allow the customer to buy more credit for stored-value tickets. Such tickets require a minimum amount of stored credit.

As the fare system has been connected together by TransitLink, commuters need to pay only one fare and pass through two fare gates (once on entry, once on exit) for an entire journey, even when transferring between lines operated by different companies. Commuters can choose to extend a trip mid-journey, and pay the difference as they exit their destination station.

The ticketing system uses the EZ-Link and NETS FlashPay contactless smart cards based upon the System for e-Payments (SeP) system for public transit built on the Singapore Standard for Contactless ePurse Application (CEPAS) system. This system allows for up to 4 card issuers in the market. The EZ-Link card was introduced on 13 April 2002 as a replacement to the original TransitLink farecard while its competitor the NETS FlashPay card entered the smart card market on 9 October 2009. The adult EZ-link card is at S$15 while the NETS FlashPay card is at S$13.

Safety 
Assurance has been given by both operators and authorities, that many actions have been taken in an effort to ensure the safety of passengers, with SBS Transit having to make greater efforts in actively publicising its safety considerations on the driverless North East Line before and after its opening. Safety campaign posters are highly visible in trains and stations, and the operators frequently play safety announcements to passengers and to commuters waiting for trains. Fire safety standards are about the same as the strict guidelines of the US National Fire Protection Association. Platform screen doors are installed at all underground stations, with half-height platform screen doors installed at all above-ground stations. These doors prevent suicides and disallowed access to restricted areas, as well as keeping normal temperatures in stations. Bylaws reduce uncivil, disruptive and dangerous acts, such as smoking, the consumption of food and drink, using safety features in an evil way, and unlawfully going onto the railway tracks. Penalties ranging from fines to jail are given for these offences.

Safety concerns were raised among the public after several accidents on the system during the 1980s and 1990s, but most problems have been fixed. On 5 August 1993, two trains collided at Clementi MRT Station because of an oil spillage on the track, which resulted in 132 injuries. There were calls for platform screen doors to be installed at above-ground stations after several incidents in which passengers were killed by oncoming trains when they fell onto the railway tracks at above-ground stations. The people in charge initially rejected such proposals as they felt that the functional purposes were not worth the high cost of installation, but changed their minds when the government announced plans to install half-height automatic platform gates in a speech on 25 January 2008, reasoning that worldwide installations of these gates reduced the market price for them.

Security 
Security concerns related to crime and terrorism were not the biggest priority of the system's planners at its original creation. However, after the Madrid train bombings in 2004 and the failed plan to bomb the Yishun MRT Station, the operators deployed private, unarmed guards to patrol station platforms and check the belongings of commuters.

Recorded announcements are frequently made to remind passengers to report suspicious activity and not to leave their belongings unattended. Digital closed-circuit cameras (CCTVs) have been upgraded with recording software at all stations and trains operated by SMRT Corporation. Trash bins and mail boxes have been removed from station platforms and concourse levels to station entrances, to remove the risk that bombs will be placed in them. Photography without prior allowance was also banned in all MRT stations since.

On 14 April 2005, the Singapore Police Force announced plans to improve rail security by creating a specialised Police MRT Unit, now known as Public Transport Security Command (Transcom). These armed officers began patrols on the MRT and LRT systems on 15 August 2005, conducting random patrols in pairs in and around rail stations and within trains. They are trained and allowed to use their firearms if they need to, including killing if necessary.

Related pages
 Light Rail Transit (Singapore)
 List of Singapore MRT stations
 List of Singapore LRT stations

Notes

References

Other websites
 SMRT Trains 
 SBS Transit
 Land Transport Authority
 Transitlink 
 Public Transport Council

 
1987 establishments in Singapore
Buildings and structures in Singapore
Rapid transit systems
Transport in Singapore