# Mass Rapid Transit Master Plan in Bangkok Metropolitan Region

The Mass Rapid Transit Master Plan in Bangkok Metropolitan Region, or M-Map, is the latest version in a series of Thai government plans for the development of an urban rail transit network serving the Greater Bangkok area. It was drafted under the care of the Office of Transport and Traffic Policy and Planning (OTP) of the Ministry of Transport.

## History
### Lavalin Skytrain

Lavalin Skytrain Project is the earliest mass rapid transit plan of Bangkok to solve the traffic congestion in Bangkok during 1970s. The project feasibility study was conducted by Thai Government with the association from West Germany Government in 1971 which led to establishment of Expressway Authority of Thailand under Clause 39 of the Announcement of the Revolutionary Council Decree 290 dated 27 November 1972 (B.E.2515) to responsible for planning and construction of expressway and mass rapid transit projects.
In 1979, the master plan compiled by Japanese advisers would have consisted of the First Stage Urban Mass Transit Lines such as the first line known as the Rama IV line, a 25-km route between Phrakhanong and Mo Chit, while the second line, the Sathon line, a 20-km route would connect Wongwian Yai and Lad Phrao, and the third line, the Memorial Line, a 16-km route that connects Dao Khanong and Makkasan, and the expected numbers of passengers were expected to be 200,000 passengers a day in 1990. The rolling stock would have utilized six heavy rail cars running at 15 minutes per train for non-rush hour and four minutes during rush hour, compared with current trains running at 6–8 minutes per train during non-rush hour and 3–5 minutes per train during rush hour, using three heavy rail cars. The project was meant to have a cost of $1100 million.
The finalised version of the project consisted of three light rail transit lines which are Sathorn Line, Rama IV Line, and Saphan Phut Line, with the depot located in Huai Khwang district (current location of Phra Ram 9 depot of MRT Blue Line). The project was expected to begin in 1981 and be completed in 1986. However, due to the 1979 oil crisis, Lavalin Skytrain project was shelved as the estimated costs were doubled.
The project was revised under the government of General Prem Tinsulanonda in 1984 and entered the bidding process with three participating companies being Asia-Euro Consortium (comprising AEG, Siemens, MAN, and Ateliers de Constructions Electriques de Charleroi), SNC-Lavalin, and Franco-Japanese Consortium. The project was awarded to SNC-Lavalin, and the contracts for a 30-year operating concession and construction were signed in May 1990 at Queen Sirikit National Convention Centre.
However, after two years of construction, In June 1992, The project was terminated by the government of Anand Panyarachun . The government stated that SNC-Lavalin failed to sign a shareholders agreement by a specified and the Thai government refused requests for overseas loan and investment guarantees. Outside of Thailand, numerous international media sources suggested politics played in its demise.
Today, There are two remainings from the construction of Lavalin Skytrain project: the abandoned viaduct in the middle of Phra Pok Klao Bridge (now converted into Chao Phraya Skypark), and a reserved space in the middle of Sathorn Bridge (currently used by Silom Line).

### Master Plan

The concept of developing a master plan began in 1972 when the Thai government sought cooperation from the German government to jointly develop a mass transit network. Subsequently, the Cabinet passed a resolution approving the continuous study, promotion, and support for the creation of the master plan starting from 1994. The sequences of the master plan are as follows:

#### 1994: Mass Rapid Transit Systems Master Plan (MTMP)

The first version of the plan, endorsed by the Cabinet on 27 September 1994 and to be implemented from 1995 to 2011, consisted of an extension of 135 kilometres (84 mi) to the three systems already in progress ( MRT , BTS , BTS and the BERTS), which would have had a combined length of 135 kilometres (84 mi) The plan was divided into two phases as follows:
* Phase 1 (1995-2001) consisted of MRT Blue Line northwestern and western extensions, BTS Skytrain north and southeastern extensions, and the Orange Line running in an east-west and north-south direction. The total length of this phase is 71.4 kilometres (44.4 mi).
* Phase 2 (2001-2011) consisted of MRT Purple Line phases 1 and 2, BERTS eastern extension and east-west section, and MRT Orange Line eastern and southeastern extensions. The overall length of this phase is 63.6 kilometres (39.5 mi).
Later, in 1996, the Office of Transport and Traffic Policy and Planning (OTP) revised this master plan and renamed it the Comprehensive Transport Master Plan (CTMP), which included an additional 178.9 kilometres (111.2 mi) of routes. This revised master plan included monorail and light rapid transit lines to enhance Bangkok into a rail transportation metropolis. The plan consisted of 11 railway projects with a combined length of 206 kilometres (128 mi), as follows;
| Line Name | Section | Route | Length (km) | Replacement |
| Rapid Transit |||||
| BERTS | R-1 | Yommarat - Bangkok Noi - Taling Chan | 14.3 km (8.9 mi) | MRT (Yommarat - Taling Chan) |
| BERTS | R-2 | Hua Lamphong - Wongwian Yai - Pho Nimit | 16.9 km (10.5 mi) | SRT (Hua Lamphong - Eastern Outer Ring Road) |
| BERTS | R-2 | Pho Nimit - Eastern Outer Ring Road | 16.9 km (10.5 mi) | SRT (Hua Lamphong - Eastern Outer Ring Road) |
| BERTS | R-3 | Hua Mak - Suvarnabhumi Airport North Terminal | 13.6 km (8.5 mi) | ARL |
| BTS Skytrain | G-1 | On Nut - Suvarnabhumi Airport South Terminal | 21.4 km (13.3 mi) | Silver Line Reserved structure can be seen between Udom Suk and Bang Na stations. |
| BTS Skytrain | G-2 | Mo Chit - Ratchayothin | 3.4 km (2.1 mi) | |
| BTS Skytrain | G-3 | Saphan Taksin - Wongwian Yai | 2.7 km (1.7 mi) | |
| BTS Skytrain | G-4 | Bang Na - Samrong | 5.9 km (3.7 mi) | |
| Blue Line | B-1 | Bang Sue - Phra Nangklao Bridge | 11 km (6.8 mi) | MRT (Phra Nangklao Bridge - Tao Poon) |
| Blue Line | B-2 | Hua Lamphong - Bangkok Yai - Bang Khae | 13 km (8.1 mi) | |
| Orange Line | ON | Bang Kapi - Phan Fa | 20.9 km (13.0 mi) | |
| Orange Line | OS | Phan Fa - Rat Burana - Samrong Tai | 22.8 km (14.2 mi) | MRT (Democracy Monument - Kru Nai) |
| Orange Line | OE | Bang Kapi - Min Buri | 11.8 km (7.3 mi) | |
| Purple Line | PN | Tao Poon - Pak Kret | 16 km (9.9 mi) | |
| Purple Line | PS | Tao Poon - Sam Sen | 5.2 km (3.2 mi) | |
| Feeder Lines |||||
| | | Bang Bua Thong - Taling Chan | N/A | MRT (Khlong Bang Phai - Sam Yaek Bang Yai) |
| | | Sam Yaek Bang Yai - Phra Nangklao Bridge | N/A | MRT (Sam Yaek Bang Yai - Phra Nangklao Bridge) |
| | | Rama VII Bridge - Dao Khanong | N/A | MRT (Bang O - Tha Phra) MRL (Tha Phra - Talat Phlu) |
| | | Rat Burana - Phutthabucha | N/A | |
| | | Rat Burana - Bang Mod | N/A | |
| | | Hua Lamphong - Rama III Loop | N/A | MRL (Rama III Bridge - Chong Nonsi) |
| | | Samrong - Si Samrong | N/A | |
| | | Ratchayothin -Si Iam | N/A | MRT (Lat Phrao - Si Iam) |
| | | Ramkhamhaeng - On Nut | N/A | |
| | | Pak Kret - Min Buri | N/A | MRT ( Yaek Pakkret - Min Buri) |
| | | On Nut - Pattanakarn | N/A | |
| | | Ratchayothin - Min Buri | N/A | |
| | | Lam Luk Ka - Pracha Uthit | N/A | BTS (Khu Khot - Eastern Ring Road-Lam Luk Ka) |
| | | Vatcharaphol - Pracha Uthit | N/A | MRL (Watcharaphol - Pracha Uthit) |
| | | Nuan Chan - Bang Kapi | N/A | MRT (Nuan Chan - Yaek Lam Sali) |

#### 2000: Urban Rail Transportation Master Plan in Bangkok and Surrounding Areas (URMAP)

Following the 1997 Asian Financial Crisis and the cancellation of the BERTS, in 1998, the Cabinet passed a resolution stating that the Office of Transport and Traffic Policy and Planning (OTP) should conduct a feasibility study for a new master plan to replace the CTMP due to the development not progressing as planned and because Thailand was in the process of recovering from the economic crisis. The main objective of this new master plan is to emphasis the distribution of urban growth from the city centre to suburban areas, promoting more decentralised urban development along major roads.
The new master plan has been adapted with several projects modifying routes from the CTMP, emphasising distribution to various areas as follows:
* BERTS has been canceled and replaced by the SRT Red Lines.
* MRT became the Circle Line, with the Tao Poon to Tha Phra and Tha Phra to Queen Sirikit National Convention Centre via Rama III Road sections added.
* Ratchayothin to Si Iam Line was extended to Si Samrong and merged with the Samrong to Si Samrong Line, becoming the Yellow Line. The line will be divided into two phases: Phase 1 will run from Lat Phrao to Pattanakarn, and Phase 2 will extend from Pattanakarn to Samrong.
* Lam Luk Ka to Pracha Uthit Line became a part of the BTS Skytrain, with four extensions added: the North Extension consisted of two projects, namely Mo Chit to Saphan Mai and Saphan Mai to Khu Khot; the South Extension included On Nut to Bearing and Bearing to Samut Prakan; the Western Extension ran from National Stadium to Phran Nok; and the Southwestern Extension from Saphan Taksin to Wongwian Yai and Wongwian Yai to Bang Wa. The On Nut to Suvarnabhumi Airport South Terminal section was canceled.

#### 2004: Bangkok Mass Transit Master Plan (BMT)

This master plan is a conversion of the URMAP master plan into practical implementation based on government policies, which stipulate that projects in the previous master plan must be completed within 6 years (2004 – 2009). This period coincides with the recovery of the economy from the crisis in 1997. The master plan outlines a mass transit network in areas anticipated to experience continuous and increasing land use in the future. It specifies the construction of one railway station every 2 kilometres in the city areas and every 1 to 1.5 kilometres in suburban areas, aiming for the rapid transit project to be a guiding initiative for future urban development.
This master plan consists of 7 rapid transit lines with an additional 291.2 kilometres (180.9 mi) added to the existing 43.7 kilometres (27.2 mi). These lines are categorised into three groups as follows;
* Loop direction
** MRT (Ratchadaphisek - Charan Sanitwong Circle Line): Tha Phra to Queen Sirikit National Convention Centre via Rama III Road section was cancelled.
* North - South direction
** SRT (Rangsit to Mahachai)
** BTS (Saphan Mai to Bang Wa)
** MRT (Bang Yai to Rat Burana): This route combines the B-1 section of the Blue Line and the OS section of the Orange Line from the original master plan.
* East - West direction
** SRT (Taling Chan to Suvarnabhumi Airport)
** BTS (Phran Nok to Samut Prakan)
** MRT (Bang Bamru to Bang Kapi): With the OS section merged into the Purple Line, the route was altered to terminate at Bang Bamru Station instead, connecting with the Light Red Line.

#### 2006 Master plan

In 2006, the Cabinet revised the previous BMT master plan with the aim of expanding coverage to more areas in Bangkok. Three routes were added to this master plan, as follows:
* MRT (Lat Phrao to Samrong): This line was included in the URMAP plan but was removed from the BMT plan.
* MRT (Khae Rai to Suwinthawong): This line was included in the CTMP plan but was removed from the URMAP plan.
* MRT (Bang Kapi to Min Buri)

#### 2008: M-Map

In 2008, the government revised the master plan for the rapid transit network once again, focusing on urban expansion and increasing transit routes in suburban areas, taking into account the growing urbanisation projected for the future. This revision resulted in a total of 9 lines with a combined length of 311 kilometres (193 mi). The revised routes are as follows:
* BTS was extended from Saphan Mai to Eastern Ring Road-Lam Luk Ka with the new extension from Km.25 to Rangsit.
* BTS was extended from Samut Prakan to Bang Pu, while the National Stadium to Phran Nok section has been shortened to Yot Se.
* MRT was extended from Rat Burana to Chulachomklao Fort.
* MRT was extended from Bang Khae to Phutthamonthon Sai 4 with two drafted future extensions which are Lat Phrao to Bang O and Tha Phra to Queen Sirikit National Convention Centre via Rama III Road sections.
* ARL has been added.
* SRT was shortened to Hua Mak.
* MRT has been upgraded to the Outer Circle Line, divided into several sections as follows;
** Southeastern section (Samrong to Pattanakarn)
** Northeastern section (Pattanakarn to Khae Rai)
** Northwestern section (Khae Rai to Bang Wa)
** Southwestern section (Bang Wa to Samrong)

#### 2010: M-Map Revision

In 2009, the government revised the M-Map, this time considering urban expansion and the distribution of development to suburban areas, guided by the rapid transit projects. This revised M-Map includes the study of a total of 12 transit lines, with a combined length of 509 kilometres (316 mi) , consisting of 8 main lines and 4 feeder lines, as follows:
| Line Name | Route | Notes |
| Main Line |||
| Dark Red Line | Thammasart University (Rangsit Campus) - Mahachai | |
| Light Red Line | Salaya - Hua Mak | Extended from Taling Chan to Salaya. |
| Light Red Line | Taling Chan - Makkasan | |
| Airport Rail Link | Don Mueang - Suvarnabhumi Airport | |
| Light Green Line | Eastern Ring Road-Lam Luk Ka - Bang Pu | |
| Dark Green Line | Yot Se - Bang Wa | |
| Blue Line | Phutthamonthon - Hua Lamphong - Bang Sue - Tha Phra | |
| Purple Line | Bang Yai - Rat Burana | |
| Orange Line | Taling Chan - Min Buri | The line was altered from Bang Bamru to Taling Chan, passing through Pratunam, and the Brown Line (Bang Kapi - Min Buri) has been merged. |
| Feeder Line |||
| Pink Line | Khae Rai - Min Buri | |
| Yellow Line | Lat Phrao - Samrong | The line was downgraded from the Outer Circle Line, with the northwestern and southwestern sections being removed from the master plan. |
| Grey Line | Vatcharaphol - Rama IX Bridge | This line was formed by the Wacharaphol to Pracha Uthit Line from the CTMP master plan to terminate at Rama IX Bridge. |
| Light Blue Line | Din Daeng - Sathorn | This line was designed to support the opening of the new Bangkok Metropolitan Administration building and to enhance connectivity in the Sathorn district. |
This master plan has been implemented for the development of actual projects since 2011. Currently, over 70% of the plan has been completed. However, with the unsuitability of certain routes, the master plan has been revised. This revision includes cancellations, modifications, and suspensions of 5 routes as follows
* SRT : Taling Chan to Makkasan section was shortened to Taling Chan-Siriraj.
* ARL : Became the part of Don Mueang–Suvarnabhumi–U-Tapao high-speed railway.
* MRT : The route was shortened to Bang Khun Non due to overlapping routes with SRT Light Red Line from Taling Chan to Bang Khun Non
* MRL : Cancelled as it is not part of the 4-year expedited plan.
* MRL : Cancelled for the same reason as the Grey Line.
As a result, the rapid transit network in Bangkok and its surrounding areas now consists of 10 lines.

#### 2024: M-Map 2

To accommodate the expansion of the city into the suburban areas, in March 2017, the Cabinet assigned the Ministry of Transport and the Office of Transport and Traffic Policy and Planning (OTP) to study an additional 10 transit lines. These lines were to be included in the M-Map Phase 2. The study was to be conducted in collaboration with the Japan International Cooperation Agency (JICA) to plan and support the necessary budget for investment, should there be a need to secure foreign loans for the project.
The second phase of the M-Map 2 focuses on developing feeder lines to support urban expansion and feed passengers into Bangkok's main transit routes, which include the BTS , BTS , MRT , MRT , SRT , SRT , and ARL . Initially, the Office of Transport and Traffic Policy and Planning (OTP) considered incorporating routes that had not yet been implemented, were under study, were outside the master plan, or had been canceled from the previous master plan. Four pilot routes were identified. Additionally, the Mass Rapid Transit Authority of Thailand (MRTA) proposed 8 new lines to be included in the master plan, resulting in a total of 11 initial routes.
Subsequently, the OTP, in collaboration with the Japan International Cooperation Agency (JICA), revealed the details of the draft master plan for the M-Map 2, which was approved by JICA. This draft included 5 new lines totaling 131 kilometres (81 mi), both as extensions of existing lines and as new lines. However, due to changing circumstances, the Department of Rail Transport (the current status of the OTP) reconsidered the entire M-Map 2. They proposed a new long-term plan (Project Long List) consisting of 29 lines, which will be submitted to the Cabinet for approval as the actual master plan in the future.
On July 25, 2023, the Department of Rail Transport officially announced the draft of the M-Map 2. This new master plan will be submitted to the Cabinet for official approval in 2024, with the goal of expediting the commencement of all projects within 20 years, by 2042. The master plan is divided into three main categories as follows
| Line Name | Route | Notes |
| Group 1: Extensions for the existing line |||
| Light Green Line | Khu Khot to Eastern Ring Road-Lam Luk Ka | Both routes are from the previous master plan that was not completed. MRTA has temporarily halted these plans until there is clarity on passenger guarantees. |
| Light Green Line | Kheha to Tamru | Both routes are from the previous master plan that was not completed. MRTA has temporarily halted these plans until there is clarity on passenger guarantees. |
| Dark Green Line | National Stadium to Yot Se | |
| Dark Green Line | Bang Wa to Bang Rak Noi Tha It | This is a new route proposed by JICA for the Bang Wa to Lam Sali Line. However, since MRTA has developed the Nonthaburi Civic Center to Yaek Lam Sali section as the Brown Line, the Department of Rail Transport has considered changing the missing section between Bang Wa and Nonthaburi Civic Center into an extension of the Silom Line, terminating at Bang Rak Noi Tha It instead. |
| Blue Line | Lak Song to Phutthamonthon Sai 4 | The route is from the previous master plan that was not completed. MRTA has temporarily halted these plans until there is clarity on passenger guarantees. |
| Dark Red Line | Rangsit to Thammasart University (Rangsit Campus) | These routes have been approved but are currently not yet implemented. |
| Dark Red Line | Bang Sue to Hua Lamphong | These routes have been approved but are currently not yet implemented. |
| Dark Red Line | Wongwian Yai to Mahachai | These routes have been approved but are currently not yet implemented. |
| Dark Red Line | Hua Lamphong to Mahachai | These routes have been approved but are currently not yet implemented. |
| Light Red Line | Taling Chan to Salaya | These routes have been approved but are currently not yet implemented. |
| Light Red Line | Taling Chan to Siriraj | These routes have been approved but are currently not yet implemented. |
| Airport Rail Link | Lat Krabang to Chachoengsao | The proposed route by the Department of Rail Transport, which cancels the Light Red Line from Bang Sue to Hua Mak to Chachoengsao. Instead, it will utilize part of the infrastructure from the Don Mueang–Suvarnabhumi–U-Tapao high-speed railway to add new stations for the Airport Rail Link City Line, expanding travel areas and replacing the entire eastern segment of the Light Red Line |
| Gold Line | Prachadhipok | BMA has temporarily halted these plans until there is clarity on passenger guarantees. |
| Group 2: New proposed line |||
| Brown Line | Nonthaburi Civic Centre to Yaek Lam Sali | |
| Grey Line | Vatcharaphol to Thong Lo | The proposed route by the BMA, which separates the original Grey Line into distinct sections. The northern section largely follows the original plan, and the Department of Rail Transport has extended the line further to Lam Luk Ka Road |
| Grey Line | Vatcharaphol to Khlong Si | The proposed route by the BMA, which separates the original Grey Line into distinct sections. The northern section largely follows the original plan, and the Department of Rail Transport has extended the line further to Lam Luk Ka Road |
| Grey Line | Phra Khanong to Rama III | The proposed route by the BMA will replace the existing Bangkok BRT. |
| Grey Line | Rama III to Tha Phra | The proposed route by the BMA will replace the existing Bangkok BRT. |
| Light Blue Line | Sathorn to Din Daeng | This route has been revived after has been removed from the original M-Map. |
| Silver Line | Bang Na to Suvarnabhumi Airport | The proposed route by the BMA, which separates the extension of the Light Green Line from Udom Suk to Suvarnabhumi Airport for independent development |
| Group 3: Feeder Line |||
| | Lat Phrao to Nonthaburi Pier | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Don Mueang to Si Saman | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Salaya to Mahachai | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Srinagarindra to Bang Bo | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Khlong Hok to Ongkharak | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Rattanathibet to Yaek Pak Kret | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Khlong San to Siriraj | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Bang Sue to Rama III | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Ratchaprhuek to Khae Rai | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Phra Khanong to Srinagarindra | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Bang Sue to Pathum Thani | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Mueang Thong Thani to Pathum Thani | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Bang Khae to Samrong | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Phraek Sa to Tamru | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Thammasart University (Rangsit Campus) to Nawanakhon | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Bang Na to Chong Nonsi | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Suvarnabhumi Airport to Bang Bo | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Borommaratchachonnani to Lak Si | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Thanyaburi to Thammasart University (Rangsit Campus) | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Khlong Sam to Khu Khot | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Min Buri to Suvarnabhumi Airport | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Debaratna to Samut Prakan | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Bang Yai to Bang Bua Thong | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Kru Nai to Samut Prakan | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |
| | Pathum Thani to Thanyaburi | Most of these routes focus on feeding passengers into the main transit system and may be proposed to operate as regular buses, bus rapid transit, trams, or may be considered as extensions of connectable routes. |

## Overview

| Line Name | Commencement | Last extension | Next extension | Terminus | Terminus | Length (km) | Stations | Track Gauge | Depot | Power Supply | Owner | Operator(s) | Average Daily Passengers (๋February 2025) |
| Commuter rail | Commuter rail | Commuter rail | Commuter rail | Commuter rail | Commuter rail | Commuter rail | Commuter rail | Commuter rail | Commuter rail | Commuter rail | Commuter rail | Commuter rail | |
| Dark Red Line | 29 November 2021; 3 years ago (2021-11-29) | - | January 2028; 2 years' time (2028-01) | Krung Thep Aphiwat Central Terminal | Rangsit | 26 km (16 mi) | 10 | 1,000 mm (3 ft 3+3⁄8 in) | • Bang Sue | 25 kV AC 50 Hz, overhead line | State Railway of Thailand | S.R.T. Electrified Train | 37,813 |
| Light Red Line | 29 November 2021; 3 years ago (2021-11-29) | - | May 2028; 3 years' time (2028-05) | Krung Thep Aphiwat Central Terminal | Taling Chan | 15 km (9.3 mi) | 4 | 1,000 mm (3 ft 3+3⁄8 in) | • Bang Sue | 25 kV AC 50 Hz, overhead line | State Railway of Thailand | S.R.T. Electrified Train | 37,813 |
| Airport rail link | Airport rail link | Airport rail link | Airport rail link | Airport rail link | Airport rail link | Airport rail link | Airport rail link | Airport rail link | Airport rail link | Airport rail link | Airport rail link | Airport rail link | |
| Airport Rail Link | 23 August 2010; 14 years ago (2010-08-23) | - | TBA | Phaya Thai | Suvarnabhumi | 28.17 km (17.50 mi) | 8 | 1,435 mm (4 ft 8+1⁄2 in) | • Khlong Tan | 25 kV AC 50 Hz, overhead line | State Railway of Thailand | Previous: S.R.T. Electrified Train Current: Asia Era One | 73,565 |
| Rapid Transit | Rapid Transit | Rapid Transit | Rapid Transit | Rapid Transit | Rapid Transit | Rapid Transit | Rapid Transit | Rapid Transit | Rapid Transit | Rapid Transit | Rapid Transit | Rapid Transit | |
| Sukhumvit Line | 5 December 1999; 25 years ago (1999-12-05) | 16 December 2020; 4 years ago (2020-12-16) | TBA | Khu Khot | Kheha | 51.17 km (31.80 mi) | 47 | 1,435 mm (4 ft 8+1⁄2 in) | • Khu Khot • Bang Pu | 750 V DC, Third Rail | Bangkok Metropolitan Administration | Bangkok Mass Transit System | 774,108 |
| Sukhumvit Line | 5 December 1999; 25 years ago (1999-12-05) | 16 December 2020; 4 years ago (2020-12-16) | TBA | Khu Khot | Kheha | 51.17 km (31.80 mi) | 47 | 1,435 mm (4 ft 8+1⁄2 in) | • Mo Chit | 750 V DC, Third Rail | Bangkok Metropolitan Administration | Bangkok Mass Transit System | 774,108 |
| Silom Line | 5 December 1999; 25 years ago (1999-12-05) | 8 February 2021; 4 years ago (2021-02-08) | TBA | National Stadium | Bang Wa | 13.09 km (8.13 mi) | 14 | 1,435 mm (4 ft 8+1⁄2 in) | • Mo Chit | 750 V DC, Third Rail | Bangkok Metropolitan Administration | Bangkok Mass Transit System | 774,108 |
| Silom Line | 5 December 1999; 25 years ago (1999-12-05) | 8 February 2021; 4 years ago (2021-02-08) | TBA | National Stadium | Bang Wa | 13.09 km (8.13 mi) | 14 | 1,435 mm (4 ft 8+1⁄2 in) | • Bang Wa sub-depot | 750 V DC, Third Rail | Bangkok Metropolitan Administration | Bangkok Mass Transit System | 774,108 |
| Blue Line | 3 July 2004; 20 years ago (2004-07-03) | 23 December 2019; 5 years ago (2019-12-23) | TBA | Tha Phra | Lak Song | 46.91 km (29.15 mi) | 38 | 1,435 mm (4 ft 8+1⁄2 in) | • Huai Khwang • Phetkasem | 750 V DC, Third Rail | Mass Rapid Transit Authority of Thailand | Bangkok Expressway and Metro | 458,324 |
| Purple Line | 6 August 2016; 8 years ago (2016-08-06) | - | 2029; 4 years' time (2029) | Khlong Bang Phai | Tao Poon | 20.92 km (13.00 mi) | 16 | 1,435 mm (4 ft 8+1⁄2 in) | • Khlong Bang Phai • Kru Nai (under construction) | 750 V DC, Third Rail | Mass Rapid Transit Authority of Thailand | Bangkok Expressway and Metro | 71,143 |
| Monorail | Monorail | Monorail | Monorail | Monorail | Monorail | Monorail | Monorail | Monorail | Monorail | Monorail | Monorail | Monorail | |
| Pink Line | 21 November 2023; 15 months ago (2023-11-21) | - | June 2025; 3 months' time (2025-06) | Nonthaburi Civic Center | Min Buri | 33.9 km (21.1 mi) | 30 | - | • Min Buri | 750 V DC, Third Rail | Mass Rapid Transit Authority of Thailand | Bangkok Mass Transit System | 61,819 |
| Yellow Line | 3 June 2023; 21 months ago (2023-06-03) | 19 June 2023; 21 months ago (2023-06-19) | - | Lat Phrao | Samrong | 28.62 km (17.78 mi) | 23 | - | • Si Udom | 750 V DC, Third Rail | Mass Rapid Transit Authority of Thailand | Bangkok Mass Transit System | 45,364 |
| People Mover | People Mover | People Mover | People Mover | People Mover | People Mover | People Mover | People Mover | People Mover | People Mover | People Mover | People Mover | People Mover | |
| Gold Line | 16 December 2020; 4 years ago (2020-12-16) | - | TBA | Krung Thon Buri | Khlong San | 1.67 km (1.04 mi) | 3 | 1,435 mm (4 ft 8+1⁄2 in) | • Krung Thon Buri | 750 V DC, Third Rail | Bangkok Metropolitan Administration | Bangkok Mass Transit System | 7,394 |
| Total | Total | Total | Total | Total | Total | 276.15 km (171.59 mi) | 189 | | | | | | 1,529,527 |

## Current future plans

| Line Name | Name | Planned opening date | Terminus | Terminus | Length (km) | Stations | Status | Owner |
| Commuter rail |||||||||
| Dark Red Line | Thammasart University (Rangsit Campus) to Ban Pachi Junction Section | TBA | Thammasart University (Rangsit Campus) | Ban Pachi Junction | ≈22 km (14 mi) | 9 | Planning | State Railway of Thailand |
| Dark Red Line | Hua Lamphong to Mahachai Section | TBA | Hua Lamphong | Mahachai | 34.76 km (21.60 mi) | 20 | Project reevaluated | State Railway of Thailand |
| Dark Red Line | Mahachai to Pak Tho Section | TBA | Mahachai | Pak Tho | ≈78 km (48 mi) | 17 | Planning | State Railway of Thailand |
| Dark Red Line | Rangsit to Thammasart University (Rangsit Campus) Section | January 2028; 2 years' time (2028-01) | Rangsit | Thammasart University (Rangsit Campus) | 10.3 km (6.4 mi) | 4 | To be tendered | State Railway of Thailand |
| Dark Red Line | Missing Link Section | TBA | Krung Thep Aphiwat Central Terminal | Hua Lamphong | 7.71 km (4.79 mi) | 5 | Approved by SRT executive board. | State Railway of Thailand |
| Light Red Line | Missing Link Section | TBA | Krung Thep Aphiwat Central Terminal | Hua Mak | 18.2 km (11.3 mi) | 5 | Approved by SRT executive board. | State Railway of Thailand |
| Light Red Line | Taling Chan to Salaya Section with two additional stations; Rama 6 and EGAT stations | TBA | Taling Chan | Salaya | 12.64 km (7.85 mi) | 6 | To be tendered | State Railway of Thailand |
| Light Red Line | Taling Chan to Siriraj Section | TBA | Taling Chan | Siriraj | 5.86 km (3.64 mi) | 3 | To be tendered | State Railway of Thailand |
| Light Red Line | Hua Mak to Chachoengsao Section | TBA | Hua Mak | Chachoengsao | ≈40 km (25 mi) | 10 | Planning | State Railway of Thailand |
| Light Red Line | Salaya to Nakhon Pathom Section | TBA | Salaya | Nakhon Pathom | ≈29 km (18 mi) | 6 | Planning | State Railway of Thailand |
| Light Red Line | Ractchaprarop to Mae Nam Section | TBA | Ratchaprarop | Mae Nam | ≈6 km (3.7 mi) | 3 | Planning | State Railway of Thailand |
| Airport rail link |||||||||
| Airport Rail Link | Don Mueang–Suvarnabhumi–U-Tapao high-speed railway (Phaya Thai to Don Mueang section) | TBA | Phaya Thai | Don Mueang | 20.31 km (12.62 mi) | 2 | Approved | State Railway of Thailand |
| Rapid Transit |||||||||
| Sukhumvit Line | Lam Luk Ka Extension | TBA | Khu Khot | Eastern Ring Road Lam Luk Ka | 7.8 km (4.8 mi) | 4 | Postponed | Mass Rapid Transit Authority of Thailand |
| Sukhumvit Line | Tamru Extension | TBA | Kheha | Tamru | 10.1 km (6.3 mi) | 4 | Postponed | Mass Rapid Transit Authority of Thailand |
| Sukhumvit Line | Infill station between Ari and Saphan Khwai stations | TBA | Sena Ruam | Sena Ruam | - | 1 | Postponed | Bangkok Metropolitan Administration |
| Silom Line | Yot Se Extension | TBA | National Stadium | Yot Se | 1.2 km (0.75 mi) | 1 | Planning | Bangkok Metropolitan Administration |
| Silom Line | Taling Chan Extension | TBA | Bang Wa | Taling Chan | 7.94 km (4.93 mi) | 6 | Planning | Bangkok Metropolitan Administration |
| Silom Line | Taling Chan to Bang Rak Noi Thai It Section | TBA | Taling Chan | Bang Rak Noi Tha It | 8.60 km (5.34 mi) | 7 | Planning | Bangkok Metropolitan Administration |
| Blue Line | Putthamonthon Sai 4 Extension | TBA | Lak Song | Putthamonthon Sai 4 | 8.3 km (5.2 mi) | 4 | Postponed | Mass Rapid Transit Authority of Thailand |
| Purple Line | MRT Purple Line Southern Section | 2029; 4 years' time (2029) | Tao Poon | Khru Nai | 22.78 km (14.15 mi) | 17 | Under construction | Mass Rapid Transit Authority of Thailand |
| Orange Line | MRT Orange Line Eastern Section | 2028; 3 years' time (2028) | Thailand Cultural Centre | Yaek Rom Klao | 21 km (13 mi) | 17 | Under construction | Mass Rapid Transit Authority of Thailand |
| Orange Line | MRT Orange Line Western Section | 2030; 5 years' time (2030) | Bang Khun Non | Thailand Cultural Centre | 13.1 km (8.1 mi) | 11 | Under construction | Mass Rapid Transit Authority of Thailand |
| Orange Line | Bang Khun Non to Taling Chan Section | TBA | Taling Chan | Bang Khun Non | 4.4 km (2.7 mi) | 1 | Approved | Mass Rapid Transit Authority of Thailand |
| Light Rapid Transit |||||||||
| Silver Line | Bang Na - Suvarnabhumi light rail project | TBA | Bang Na | Suvarnabhumi Airport South Terminal | ≈20 km (12 mi) | 14 | Postponed | Mass Rapid Transit Authority of Thailand |
| Monorail |||||||||
| Pink Line | Impact Arena Spur Line | June 2025; 3 months' time (2025-06) | Muang Thong Thani | Lake Muang Thong Thani | 2.65 km (1.65 mi) | 2 | Under construction | Mass Rapid Transit Authority of Thailand |
| Brown Line | MRT Brown Line | 2030; 5 years' time (2030) | Nonthaburi Civic Center | Yaek Lam Sali | 21 km (13 mi) | 20 | Approved | Mass Rapid Transit Authority of Thailand |
| Yellow Line | Ratchayothin Extension | TBA | Lat Phrao | Ratchayothin | 2.5 km (1.6 mi) | 2 | Shleved | Mass Rapid Transit Authority of Thailand |
| Grey Line | Grey Line Northern Section | TBA | Thong Lo | Vatcharaphol | 16.25 km (10.10 mi) | 15 | Postponed | Mass Rapid Transit Authority of Thailand |
| Grey Line | Grey Line Southern Section | TBA | Phra Khanong | Tha Phra | 20.2 km (12.6 mi) | 24 | Postponed | Mass Rapid Transit Authority of Thailand |
| Grey Line | Khlong Si Extension | TBA | Vatcharaphol | Khlong Si | 10.87 km (6.75 mi) | 5 | Planning | Mass Rapid Transit Authority of Thailand |
| Light Blue Line | Light Blue Line project | TBA | Pracha Songkro | Chong Nonsi | 9.5 km (5.9 mi) | 9 | Planning | Mass Rapid Transit Authority of Thailand |
| People Mover |||||||||
| Gold Line | Prachadhipok Extension | TBA | Khlong San | Prachadhipok | 1.2 km (0.75 mi) | 1 | Postponed | Bangkok Metropolitan Administration |
| Total (excluding Ratchayothin extension) | Total (excluding Ratchayothin extension) | Total (excluding Ratchayothin extension) | Total (excluding Ratchayothin extension) | Total (excluding Ratchayothin extension) | ≈491.67 km (305.51 mi) | 229 | | |

## Rolling Stock and signalling
### Rolling stock

| Name | Manufacturer | Family Name | Assembly | Line | Line | Trainset statistics | Trainset statistics | Trainset statistics | Trainset statistics | Trainset statistics | Trainset statistics | Image |
| Name | Manufacturer | Family Name | Assembly | Line | Line | No. of trainsets | Cars (per train) | Car length | Trainset length | Speed Limit | Service Commencement | Image |
| 1000 Series | Hitachi Rail | A-train | Yamaguchi, Japan | Dark Red Line | Light Red Line | 15 | 6-car | N/A | N/A | Dark Red Line: 145 km/h (90 mph) Light Red Line: 120 km/h (75 mph) | 29 November 2021; 3 years ago (2021-11-29) | |
| 2000 Series | Hitachi Rail | A-train | Yamaguchi, Japan | Dark Red Line | Light Red Line | 10 | 4-car | N/A | N/A | Dark Red Line: 145 km/h (90 mph) Light Red Line: 120 km/h (75 mph) | 29 November 2021; 3 years ago (2021-11-29) | |
| Class 360 | Siemens | Desiro | Krefeld, Germany | Airport Rail Link | Airport Rail Link | 5 | 3-car | 20.34m | 61.02m | 145 km/h (90 mph) | 23 August 2010; 14 years ago (2010-08-23) | |
| Class 360 | Siemens | Desiro | Krefeld, Germany | Airport Rail Link | Airport Rail Link | 4 | 4-car | 20.34m | 81.36m | 145 km/h (90 mph) | 23 August 2010; 14 years ago (2010-08-23) | |
| A1 | Siemens | Modular Metro | Vienna, Austria | Sukhumvit Line | Silom Line | 35 | 4-car | 21.8m (DM) 21.5m (T) | 86.6m | 80 km/h (50 mph) | 5 December 1999; 25 years ago (1999-12-05) | |
| A2 | Siemens / Bozankaya | - | Ankara, Turkey | Sukhumvit Line | Silom Line | 22 | 4-car | 21.8m (DM) 21.5m (T) | 86.6m | 80 km/h (50 mph) | 6 December 2018; 6 years ago (2018-12-06) | |
| B1 | CRRC Changchun Railway Vehicles | - | Changchun, China | Sukhumvit Line | Silom Line | 12 | 4-car | 21.86m (DT/DM) 21.77m (T/M) | 87.26m | 80 km/h (50 mph) | December 2010; 14 years ago (2010-12) | |
| B2 | CRRC Changchun Railway Vehicles | - | Changchun, China | Sukhumvit Line | Silom Line | 5 | 4-car | 21.86m (DT/DM) 21.77m (T/M) | 87.26m | 80 km/h (50 mph) | 29 November 2013; 11 years ago (2013-11-29) | |
| B3 | CRRC Changchun Railway Vehicles | - | Changchun, China | Sukhumvit Line | Silom Line | 24 | 4-car | 21.86m (DT/DM) 21.77m (T/M) | 87.26m | 80 km/h (50 mph) | 30 November 2019; 5 years ago (2019-11-30) | |
| IBL (Initial Blue Line) | Siemens | Modular Metro | Vienna, Austria | Blue Line | Blue Line | 19 | 3-car | 21.8m (DM) 21.5m (T) | 65.1m | 80 km/h (50 mph) | 3 July 2004; 20 years ago (2004-07-03) | |
| BLE (Blue Line Extension) | Siemens | - | Vienna, Austria | Blue Line | Blue Line | 35 | 3-car | 21.8m (DM) 21.5m (T) | 65.1m | 80 km/h (50 mph) | 29 July 2019; 5 years ago (2019-07-29) | |
| TBA | Siemens / Bozankaya | TBA | Ankara, Turkey | Blue Line | Blue Line | 21 | 3-car | TBA | TBA | 80 km/h (50 mph) | 2026; 1 year's time (2026) | |
| TBA | Siemens / Bozankaya | TBA | Ankara, Turkey | Orange Line | Orange Line | 32 | 3-car | TBA | TBA | 80 km/h (50 mph) | 2026; 1 year's time (2026) | |
| S24 | Japan Transport Engineering Company (J-TREC) | Sustina | Yokohama, Japan | Purple Line | Purple Line | 21 | 3-car | 21.34m (DM) 21.00m (T) | 63.68m | 80 km/h (50 mph) | 6 August 2016; 8 years ago (2016-08-06) | |
| Innovia Monorail 300 | Alstom / CRRC Nanjing Puzhen | Innovia | Nanjing, China | Pink Line | Pink Line | 30 | 4-car | 13.21m (end car) 13.02m (mid car) | 50.47m | 80 km/h (50 mph) | 21 November 2023; 15 months ago (2023-11-21) | |
| Innovia Monorail 300 | Alstom / CRRC Nanjing Puzhen | Innovia | Nanjing, China | Yellow Line | Yellow Line | 28 | 4-car | 13.21m (end car) 13.02m (mid car) | 50.47m | 80 km/h (50 mph) | 3 June 2023; 21 months ago (2023-06-03) | |
| Innovia APM 300 | Alstom / CRRC Nanjing Puzhen | Innovia | Nanjing, China | Gold Line | Gold Line | 3 | 2-car | N/A | N/A | 80 km/h (50 mph) | 16 December 2020; 4 years ago (2020-12-16) | |

### Signalling

| Line name | Supplier | Solution | Type | Commission Date | Level of Automation | Remarks |
| Dark Red Line | Thales | AlTrac for ERTMS | Fixed-block ETCS Level 1 | 2020 | Semi-automatic (STO) | |
| Light Red Line | Thales | AlTrac for ERTMS | Fixed-block ETCS Level 1 | 2020 | Semi-automatic (STO) | |
| Airport Rail Link | Siemens | Trainguard LZB700M | Fixed-block; speed coded | 2009 | Semi-automatic (STO) | |
| Sukhumvit Line | Bombardier | Cityflo 450 | Moving-block CBTC | 2009-2011 | Semi-automatic (STO) | |
| Silom Line | Bombardier | Cityflo 450 | Moving-block CBTC | 2009-2011 | Semi-automatic (STO) | |
| Blue Line | Siemens | Trainguard LZB700M | Fixed-block | 2019 | Semi-automatic (STO) | Reinstalled. |
| Purple Line | Bombardier | Cityflo 650 | Moving-block CBTC | 2016 | Semi-automatic (STO) | |
| Pink Line | Bombardier | Cityflo 650 | Moving-block CBTC | 2021 | Unattended (UTO) | |
| Yellow Line | Bombardier | Cityflo 650 | Moving-block CBTC | 2021 | Unattended (UTO) | |
| Gold Line | Bombardier | Cityflo 650 | Moving-block CBTC | 2020 | Unattended (UTO) | |
| Former |||||||
| Sukhumvit Line | Siemens | Trainguard LZB700M | Fixed-block | 1999 | Semi-automatic (STO) | Decommissioned from 2009 to 2011 |
| Silom Line | Siemens | Trainguard LZB700M | Fixed-block | 1999 | Semi-automatic (STO) | Decommissioned from 2009 to 2011 |

## Timeline

| Year | Date | Line | Event | Length (km) | Station |
| 1999 | 5 December | Sukhumvit Line | Mo Chit - On Nut section opened | 15.9 km (9.9 mi) | 17 |
| 1999 | 5 December | Silom Line | National Stadium - Saphan Taksin section opened | 6.24 km (3.88 mi) | 7 |
| 2004 | 3 July | Blue Line | Bang Sue - Hua Lamphong section opened | 19.95 km (12.40 mi) | 18 |
| 2009 | 15 May | Silom Line | Saphan Taksin - Wongwian Yai section opened | 2.08 km (1.29 mi) | 2 |
| 2010 | 23 August | Airport Rail Link | Phaya Thai - Suvarnabhumi section opened | 28.17 km (17.50 mi) | 8 |
| 2011 | 12 August | Sukhumvit Line | On Nut - Bearing section opened | 5.34 km (3.32 mi) | 5 |
| 2013 | 12 January | Silom Line | Wongwian Yai - Pho Nimit section opened | 1.02 km (0.63 mi) | 1 |
| 2013 | 14 February | Silom Line | Pho Nimit - Talat Phlu section opened | 1.16 km (0.72 mi) | 1 |
| 2013 | 5 December | Silom Line | Talat Phlu - Bang Wa section opened | 2.5 km (1.6 mi) | 2 |
| 2016 | 6 August | Purple Line | Khlong Bang Phai - Tao Poon section opened | 20.92 km (13.00 mi) | 16 |
| 2017 | 3 April | Sukhumvit Line | Bearing - Samrong section opened | 1.78 km (1.11 mi) | 1 |
| 2017 | 11 August | Blue Line | Bang Sue - Tao Poon section opened | 1.18 km (0.73 mi) | 1 |
| 2018 | 6 December | Sukhumvit Line | Samrong - Kheha section opened | 9.95 km (6.18 mi) | 8 |
| 2019 | 29 July | Blue Line | Hua Lamphong - Tha Phra section opened | 6.16 km (3.83 mi) | 5 |
| 2019 | 9 August | Sukhumvit Line | Mo Chit - Ha Yaek Lat Phrao section opened | 1.81 km (1.12 mi) | 1 |
| 2019 | 24 August | Blue Line | Tha Phra - Bang Wa section opened | 2.12 km (1.32 mi) | 2 |
| 2019 | 21 September | Blue Line | Bang Wa - Lak Song section opened | 5.3 km (3.3 mi) | 4 |
| 2019 | 4 December | Blue Line | Tao Poon - Sirindhorn section opened | 5.16 km (3.21 mi) | 4 |
| 2019 | 4 December | Sukhumvit Line | Ha Yaek Lat Phrao - Kasetsart University section opened | 3.29 km (2.04 mi) | 4 |
| 2019 | 23 December | Blue Line | Sirindhorn - Tha Phra section opened | 7.04 km (4.37 mi) | 4 |
| 2020 | 5 June | Sukhumvit Line | Kasetsart University - Wat Phra Si Mahathat section opened | 4.24 km (2.63 mi) | 4 |
| 2020 | 16 December | Sukhumvit Line | Wat Phra Si Mahathat - Khu Khot section opened | 8.86 km (5.51 mi) | 7 |
| 2021 | 16 January | Gold Line | Krung Thon Buri - Khlong San section opened | 1.67 km (1.04 mi) | 3 |
| 2021 | 8 February | Silom Line | Saint Louis station opened | - | 1 |
| 2021 | 29 November | Dark Red Line | Krung Thep Aphiwat Central Terminal - Rangsit section opened | 22.5 km (14.0 mi) | 10 |
| 2021 | 29 November | Light Red Line | Krung Thep Aphiwat Central Terminal - Taling Chan section opened | 14.93 km (9.28 mi) | 4 |
| 2023 | 3 July | Yellow Line | Lat Phrao - Samrong section opened | 28.62 km (17.78 mi) | 23 |
| 2024 | 7 January | Pink Line | Nonthaburi Civic Centre - Min Buri section opened | 33.9 km (21.1 mi) | 30 |
| Under construction / Planned ||||||
| 2025 | June | Pink Line | Muang Thong Thani - Lake Muang Thong Thani section opened | 2.67 km (1.66 mi) | 2 |
| 2028 | January | Dark Red Line | Rangsit - Thammasat University (Rangsit Campus) opened | 10.3 km (6.4 mi) | 4 |
| 2028 | May | Light Red Line | Taling Chan - Salaya section opened | 12.64 km (7.85 mi) | 4 |
| 2028 | May | Light Red Line | Taling Chan - Siriraj section Opened | 5.86 km (3.64 mi) | 4 |
| 2028 | May | Light Red Line | Rama 6 and EGAT stations opened | - | 2 |
| 2028 | TBA | Orange Line | Thailand Cultural Centre - Yaek Rom Klao section opened | 21.04 km (13.07 mi) | 17 |
| 2029 | TBA | Purple Line | Tao Poon - Khru Nai section opened | 22.78 km (14.15 mi) | 17 |
| 2030 | TBA | Orange Line | Bang Khun Non - Thailand Cultural Centre section opened | 13.2 km (8.2 mi) | 11 |
| 2030 | TBA | Brown Line | Nonthaburi Civic Centre - Yaek Lam Sali section opened | 21 km (13 mi) | 20 |