{{Short description|Rapid transit line in Bangkok, Thailand}} {{Infobox rail line | name = {{BTS route title | engname = BTS Sukhumvit Line | thaname = สายสุขุมวิท }} | color = {{rcr|BTS Skytrain|Sukhumvit}} | logo = BTS-Logo Light Green.svg | logo_width = 80px | image = Bangkok Skytrain BTS 3.jpg | image_width = 300px | caption = Sukhumvit Line EMU-A2 train departing Victory Monument station | native_name = | type = [[Rapid transit]] | system = [[BTS Skytrain]] | owner = [[Bangkok Metropolitan Administration]] | operator = [[Bangkok Mass Transit System|Bangkok Mass Transit System Public Company Limited]] | locale = [[Bangkok]], [[Samut Prakan]], and [[Pathum Thani]] | start = [[File:BTS N24.svg|20px]] [[Khu Khot BTS station|Khu Khot]] | end = [[File:BTS E23.svg|20px]] [[Kheha BTS station|Kheha]] | connectinglines = | stations = '''Total :''' 57 stations<br>47 ''<small>(operational)</small>''<br>9 ''<small>(planned)</small>''<br>1 ''<small>(provisional)</small>'' | daily_ridership = 926,294 <small>({{rint|bangkok|Sukhumvit}} and {{rint|bangkok|Silom}})</small><br><small>30 August 2024</small><ref>{{Cite web |date=2024-08-31 |title="กรมการขนส่งทางราง" เผยวันศุกร์สิ้นเดือนสิงหาคม 67 มีผู้ใช้บริการรถไฟฟ้าสายฉลองรัชธรรม (สีม่วง) และรถไฟฟ้าสายสีแดง สูงสุดตั้งแต่เปิดให้บริการมา หลังมีนโยบายอัตราค่าโดยสารรถไฟฟ้าสูงสุด 20 บาทตลอดสาย |url=https://www.drt.go.th/public-relations/%E0%B8%81%E0%B8%A3%E0%B8%A1%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%82%E0%B8%99%E0%B8%AA%E0%B9%88%E0%B8%87%E0%B8%97%E0%B8%B2%E0%B8%87%E0%B8%A3%E0%B8%B2%E0%B8%87-%E0%B9%80%E0%B8%9C%E0%B8%A2-7 |access-date=2024-09-04 |website=กรมการขนส่งทางราง กระทรวงคมนาคม |language=th}}</ref> | mapcolor = {{RouteBox| |Sukhumvit Line|#77cc00}} Light Green | yearcommenced = {{Start date and age|1992|04|09|df=y}} | open = {{date and age|df=y|1999|12|05}} | lastextension = {{date and age|df=y|2020|12|16}} | character = Fully elevated | depot = Mo Chit Depot <small>(shared with {{rint|bangkok|Silom}})</small><br>Khu Khot Depot <small>(shared with {{rint|bangkok|Silom}})</small><br>Kheha Depot | stock = '''[[Siemens Modular Metro]]'''<br>'''EMU-A1''': 35 four-car trains<br>'''[[Siemens]] [[Bozankaya]]'''<br>'''EMU-A2''': 22 four-car trains<br>'''[[CRRC Changchun Railway Vehicles|CNR Changchun Railway Vehicles]]'''<br>'''EMU-B1''': 12 four-car trains<br>'''[[CRRC Changchun Railway Vehicles|CNR Changchun Railway Vehicles]]'''<br>'''EMU-B2''': 5 four-car trains<br>'''[[CRRC Changchun Railway Vehicles]]'''<br>'''EMU-B3''': 24 four-car trains | linelength = '''Total :'''{{convert|69.07|km|abbr=on}}<br>{{convert|51.17|km|abbr=on}} <small>''(operational)''</small><br>{{convert|17.9|km|abbr=on}} <small>''(planned)''</small> | gauge = {{track gauge|sg|allk=on}} | electrification = {{750 V DC|conductor=y}} | speed_km/h = 80 | signalling = '''Former:''' [[Siemens Mobility|Siemens]] Trainguard LZB700M fixed block [[Automatic train control|ATC]] under [[Automatic train operation|ATO]] GoA 2 (STO)<br>'''Current:''' [[Bombardier Transportation|Bombardier]] CITYFLO 450 moving block [[Communications-based train control|CBTC]] [[Automatic train control|ATC]] under [[Automatic train operation|ATO]] GoA 2 (STO), with subsystems of [[Automatic train protection|ATP]], ATS and [[Computer-based interlocking|CBI]]<ref>{{Cite web|title=Mass transit signalling|url=https://rail.bombardier.com/en/solutions-and-technologies/signalling-and-infrastructure/mass-transit-signalling.html#CITYFLO_450|access-date=2020-06-16|website=Bombardier Transportation|language=en|url-status=dead|archive-url=https://web.archive.org/web/20220101063113/https://rail.bombardier.com/en/solutions-and-technologies/signalling-and-infrastructure/mass-transit-signalling.html|archive-date=2022-01-01}}</ref><ref>{{Cite web|title=Bombardier Projects in Mass-transit signalling|url=https://rail.bombardier.com/content/dam/transportation/products/mass-transit-signalling/BT_PDF_Mass-transit%20signalling.pdf|url-status=dead|archive-url=https://web.archive.org/web/20211123062807/https://rail.bombardier.com/content/dam/transportation/products/mass-transit-signalling/BT_PDF_Mass-transit%20signalling.pdf|archive-date=2021-11-23}}</ref> | map = {{Sukhumvit Line route}} | map_state = collapsed }} '''The Elevated Train in Commemoration of [[Bhumibol Adulyadej|HM the King]]'s 6th Cycle Birthday 1st line''', also known as '''Sukhumvit Line''', is one of the rapid transit lines of the [[BTS Skytrain|BTS Skytrain System]] in [[Bangkok]], Thailand.'''<ref>{{Cite web |title=รถไฟฟ้าบีทีเอส (BTS Skytrain) |url=https://www.bts.co.th/eng/info/info-history.html}}</ref>''' The line runs from [[Siam Station]], where it interchanges with the [[Silom Line]], and continues both northwards along [[Phaya Thai Road|Phaya Thai]] and [[Phahon Yothin Road|Phahon Yothin]] Roads to [[Khu Khot BTS station|Khu Khot]] in [[Lam Luk Ka District]], [[Pathum Thani Province|Pathum Thani]], and eastwards along Rama I, [[Phloen Chit Road|Phloen Chit]] and [[Sukhumvit Road|Sukhumvit]] Roads, through [[Bang Na District]] to [[Kheha BTS station|Kheha Station]] in [[Samut Prakan Province|Samut Prakan]].

The line was first opened on 5 December 1999, along with the [[Silom Line]]. Both lines are operated by the [[Bangkok Mass Transit System Public Company Limited]] under a 30-year concession from the [[Bangkok Metropolitan Administration]]. When it opened, the line ran from [[Mo Chit BTS station|Mo Chit]] to [[On Nut BTS station|On Nut]] covering a total distance of {{convert|16.7|km|abbr=on}} with 17 stations. {{As of|2024|October|post=,}} Sukhumvit Line is one of the main arteries of the [[Mass Rapid Transit Master Plan in Bangkok Metropolitan Region|Bangkok Mass Rapid Transit System]] with 900,000 daily passengers per day (combined with the [[Silom Line]]). The line rapidly expanded from 2011 until 2021, tripling its distance through three extension projects and reaching a total length of {{convert|51.17|km|abbr=on}} with 47 stations.

== History ==

=== Original plan === The Sukhumvit Line's initial proposal was for {{convert|12.8|km|abbr=on}} route running from N4 station to E9 station with the depot located at [[Lumphini Park]] near the [[Silom Line]]. However, this location for the depot faced backlash from the public opinion, which argued that it violated [[King Vajiravudh]]'s intention in donating his land to establish [[Lumphini Park]] for the public. Additionally, there were protests demanding that the construction of both Skytrain lines be built underground instead of being fully elevated. Therefore, several alternative locations for the depot were considered, such as a vacant land plot in Soi Rangnam owned by the Crowned Property Bureau or the Phra Khanong pumping station in Sukhumvit 50. Ultimately, the [[Bangkok Metropolitan Administration]] decided to relocate the depot to the former site of the Northern Bus Terminal (commonly known as the Mo Chit Bus Terminal). With the decision made, the Sukhumvit Line route was extended from N4 station to N8 station. Several changes were made during the construction, as follows:<ref>{{Cite web |title=Smart EIA Plus : รายละเอียดรายงาน |url=https://eia.onep.go.th/eia/detail?id=6659#:~:text=%E0%B8%A3%E0%B8%B2%E0%B8%A2%E0%B8%A5%E0%B8%B0%E0%B9%80%E0%B8%AD%E0%B8%B5%E0%B8%A2%E0%B8%94%E0%B8%A3%E0%B8%B2%E0%B8%A2%E0%B8%87%E0%B8%B2%E0%B8%99-,%E0%B8%94%E0%B8%B2%E0%B8%A7%E0%B8%99%E0%B9%8C%E0%B9%82%E0%B8%AB%E0%B8%A5%E0%B8%94%E0%B9%84%E0%B8%9F%E0%B8%A5%E0%B9%8C%E0%B8%A3%E0%B8%B2%E0%B8%A2%E0%B8%87%E0%B8%B2%E0%B8%99,-%E0%B9%80%E0%B8%A5%E0%B8%82%E0%B8%97%E0%B8%B5%E0%B9%88%E0%B8%A3%E0%B8%B2%E0%B8%A2%E0%B8%87%E0%B8%B2%E0%B8%99%20: |access-date=2024-09-26 |website=eia.onep.go.th}}</ref> *N3, N4, E8, and E9 stations were changed from an island platform to side platforms. *The fully operational year was pushed from the end of 1996 to the end of 1999. *Station designs were drastically changed from the EIA reports. *CEN station was moved from the east side of Chaloem Phao junction to the west side. *E1 station was moved from the east side of the Chit Lom junction to the west side, in front of [[Mater Dei School (Thailand)|Mater Dei School]], with the two entrances in front of the school being canceled due to protests from school staffs and students concerned about privacy, landscape, and air pollution issues. *E2 station was originally located between Sukhumvit 2 and [[Nana, Bangkok|Soi Nana]] but was later moved to the west side of the [[Chaloem Maha Nakhon Expressway]]. *E4 station was moved from the east side of the Asok junction to the west side.

=== Extensions ===

==== Bearing Extension ==== Construction started in August 2006 on a four-billion baht, {{Cvt|5.25|km}} extension from On Nut to Bearing which included 5 new stations<ref>Groundbreaking starts on new BTS extension, ''Daily News'', 15 August 2006</ref> The extension was funded by the BMA.<ref>BTS extension budget cut, ''Bangkok Post'', 15 December 2006</ref> The original scheduled opening date was mid-2009. However, a delay in tendering the contract for the electrical and signaling works resulted in a two-year delay.

The extension did not open until over two years later, on 12 August 2011. The delay in opening prompted the BMA to offer free travel on this extension until the end of 2011 as compensation.

==== Samut Prakan Extension ==== Construction started in April 2012 on a {{Cvt|12.6|km}}, nine station extension from [[Bearing BTS station|Bearing station]] to [[Kheha BTS station|Kheha station]]. The extension was funded by the [[Mass Rapid Transit Authority of Thailand|MRTA]] as it is outside [[Bangkok Metropolitan Administration|BMA]] city limits, Bangkok Province. Construction was contracted to take 1,350 days and the extension was originally scheduled to open by early 2017. In April 2013, the MRTA awarded Ch Karnchang the contract for track laying and electrical systems.<ref>"Ch Karnchang gets Phase 2 of Bearing-Samut Prakan route" ''The Nation'', 13 April 2013</ref>

In June 2014, civil works were stated to be 28.3 percent complete. In August 2016, the BMA agreed to take over the operation of the extension from MRTA. Delays over the agreement of how much the BMA should pay MRTA caused a delay in the commencement of test runs on the extension. Track works were 98% completed by November 2016. The total cost of the extension was estimated at 21.4 billion baht.<ref>{{Cite news |title=BMA to postpone test run of Bearing-Samrong skytrain |url=http://www.bangkokpost.com/news/general/1140841/bma-to-postpone-test-run-of-bearing-samrong-skytrain |access-date=2016-11-22 |newspaper=Bangkok Post}}</ref> In January 2017, it was announced that the opening of the extension could be further delayed to 2018-2019 due to budgetary concerns and ongoing disputes between the MRTA and BMA.<ref>{{Cite news |author=Sasiwan Mokkhasen |date=2017-01-31 |title=Green Line Going Nowhere for at Least Two Years |url=http://www.khaosodenglish.com/news/transpo/2017/01/31/green-line-going-nowhere-least-two-years/ |access-date=2017-02-25 |newspaper=Khaosod English |language=en-US}}</ref>

The first {{Cvt|1.2|km}} section of the extension to [[Samrong station]] opened on 3 April 2017.<ref>{{Cite news |author=Asaree Thaitrakulpanich |date=2017-02-24 |title=First Station of Stalled BTS Green Line to Open April 1 |url=http://www.khaosodenglish.com/news/transpo/2017/02/24/first-station-stalled-bts-green-line-open-april-1/ |access-date=2017-02-25 |newspaper=Khaosod English |language=en-US}}</ref> The full extension to [[Kheha BTS station|Kheha]] opened on 6 December 2018.<ref>{{cite news |date=1 December 2017 |title=MRTA pushes to fast-track launch of South Green Line |url=https://www.bangkokpost.com/archive/mrta-pushes-to-fast-track-launch-of-south-green-line/1369887 |newspaper=Bangkok Post}}</ref>

==== Khu Khot Extension ==== An 11.4&nbsp;km, 11 station northern extension from [[Mo Chit BTS station|Mo Chit station]] to [[Saphan Mai]] in [[Don Mueang District]] had been planned since the Sukhumvit Line opened. Originally, this extension was scheduled to be completed by 2008. However, due to a combination of changes in government, a prolonged environmental study, and problems with locating a suitable train depot the extension was continually delayed. A further {{Cvt|16.5|km}}, nine station extension from Saphan Mai to Khu Khot was also planned once the extension to Saphan Mai had been completed.

After multiple delays, in mid-2013 a decision was made to tender extensions (1) and (2) at the same time, by the end of 2013. However, the dissolution of parliament in November 2013 delayed this yet again. A tender was finally released in January 2014<ref>{{Cite web | url=http://www.mrta.co.th/sysRegister/register131217/proc17122556.pdf | title=Invitation to tender the MRT green line (north) project | archive-url=https://web.archive.org/web/20140714185847/http://www.mrta.co.th/sysRegister/register131217/proc17122556.pdf | archive-date=2014-07-14}}</ref> with an April deadline before being delayed until late May 2014 due to concerns from bidders.<ref>{{Cite web | url=http://www.prachachat.net/news_detail.php?newsid=1401076541 | title=รฟม.ปรับทีโออาร์หมอชิต-คูคต กลางปี59 เปิดให้บริการสายสีม่วง | publisher=Prachachat News | date=26 May 2014}}</ref> [[2014 Thai coup|A military coup]] in late-May 2014 suspended the bidding process whilst the military administration reviewed all major projects. In late June, the military administration affirmed that the tender would proceed before the end of 2014. In August 2014, the MRTA announced that the new tender deadline was 30 September 2014.<ref>{{cite news |title=ข่าวรอบวัน |url=http://www.prachachat.net/news_detail.php?newsid=1408439328 |newspaper=ประชาชาติธุรกิจ}}</ref> Five bidders qualified and the successful bids were announced in December 2014.<ref>{{Cite web |title=5กลุ่มบริษัทผ่านคุณสมบัติสร้างรถไฟสีเขียว คาดหาผู้รับเหมาได้ไม่เกินต้นปี58 : มติชนออนไลน์ |url=http://www.matichon.co.th/news_detail.php?newsid=1412581507 |url-status=dead |archive-url=https://web.archive.org/web/20160304031709/http://www.matichon.co.th/news_detail.php?newsid=1412581507 |archive-date=2016-03-04 |access-date=2014-10-08}}</ref> The tender specified a construction period of 1,350 days.

On 3 April 2015, MRTA signed four contracts for this extension:<ref>{{cite web |title=รฟม.เซ็นสัญญารถไฟฟ้าสายสีเขียวเหนือ เริ่มสร้างมิ.ย 58 คาดเปิดใช้ต้นปี |url=http://www.ryt9.com/s/iq03/2130477}}</ref> {| class="wikitable" style="margin:auto;font-align:center;text-align:center;font-size:90%;&quot;" ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Contract ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Notes ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Contractors ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Length ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Costs |- |1 | style="text-align: left;" | [[Mo Chit BTS station|Mo Chit]] to [[Saphan Mai BTS station|Saphan Mai]] | style="text-align: left;" |[[Italian-Thai Development]] |{{convert|12.01|km|abbr=on}} |฿15,269 million |- |2 | style="text-align: left;" |[[Saphan Mai]] to [[Khu Khot]] | style="text-align: left;" |<abbr title="Unique Engineering and Construction">UN</abbr>-<abbr title="Sinohydro Corporation">SH</abbr>-<abbr title="China Habour Engineering">CH</abbr> joint-venture |{{convert|6.11|km|abbr=on}} |฿6,657 million |- |3 | style="text-align: left;" |Khu Khot Depot and Park & Ride buildings at [[Yaek Kor Por Aor BTS station|Yaek Kor Por Aor]] and [[Khu Khot BTS station|Khu Khot]] stations | style="text-align: left;" |<abbr title="Sino-Thai Engineering and Construction">STEC</abbr>-<abbr title="A.S. Associated Engineering (1964)">AS</abbr> joint-venture ! rowspan="2" | |฿4,019 million |- |4 | style="text-align: left;" |Track laying and system design | style="text-align: left;" |<abbr title="Sino-Thai Engineering and Construction">STEC</abbr>-<abbr title="A.S. Associated Engineering (1964)">AS</abbr> joint-venture |฿2,841 million |} [[File:Green Line MRT Project Photographs by Peak Hora (15).jpg|left|thumb|Construction of the viaduct before entering Ha Yaek Lat Phrao station in 2018.|245x245px]] The MRTA, contactors and Thai Traffic Police met on 2 September 2015 and confirmed construction would begin on 8 September 2015. A flyover at Kasetsart was demolished, which commenced on 12 September 2015.<ref>{{cite news|url=https://mgronline.com/business/detail/9580000099688|script-title=th:เคาะแล้ว! รื้อสะพานเกษตร 12 ก.ย. ผู้รับเหมาลงพื้นที่ 8 จุดเบี่ยงจราจรแนวพหลฯ|date=2 September 2015|newspaper=[[ASTV Manager]]|access-date=2 September 2015|language=th|archive-url=https://web.archive.org/web/20260504042158/https://mgronline.com/business/detail/9580000099688|archive-date=4 May 2026|url-status=live}}</ref>

At 31 December 2017, the progress of civil works construction was at 53.31% according to the MRTA.<ref>{{Cite web | url=https://www.mrta.co.th/th/news/information/ความก-าวหน-าการก-อสร-างรถไฟฟ-า-ณ-31-ธ-นวาคม-2560/ | publisher=MRTA Press | date=16 January 2018 | archive-url=https://web.archive.org/web/20210828112816/https://www.mrta.co.th/th/news/information/%E0%B8%84%E0%B8%A7%E0%B8%B2%E0%B8%A1%E0%B8%81-%E0%B8%B2%E0%B8%A7%E0%B8%AB%E0%B8%99-%E0%B8%B2%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%81-%E0%B8%AD%E0%B8%AA%E0%B8%A3-%E0%B8%B2%E0%B8%87%E0%B8%A3%E0%B8%96%E0%B9%84%E0%B8%9F%E0%B8%9F-%E0%B8%B2-%E0%B8%93-31-%E0%B8%98-%E0%B8%99%E0%B8%A7%E0%B8%B2%E0%B8%84%E0%B8%A1-2560/ | archive-date=2021-08-28 | title=ความก้าวหน้าการก่อสร้างรถไฟฟ้า ณ 31 ธันวาคม 2560 |language=th | trans-title=Progress of electric train construction as of 31 December 2017}}</ref> {{As of|2018|04|post=,}} the MRTA stated that civil works progress had advanced to 63.27%.<ref name="ref1"/> {{As of|2018|09|30|post=,}} overall construction had progressed to 78.79%.<ref>{{cite web |title=การรถไฟฟ้าขนส่งมวลชนแห่งประเทศไทย on Facebook |url=https://www.facebook.com/MRTA.PR/photos/a.1433440196872710/2109998672550189/. |url-access=limited |archive-url=https://ghostarchive.org/iarchive/facebook/1409174012632662/2109998672550189 |archive-date=2022-04-30 |website=[[Facebook]]}}{{cbignore}}''MRTA Press''{{User-generated source|certain=yes|date=March 2022}}</ref> By the end of March 2019, civil construction had nearly been completed having progressed to 99.42%.<ref name="ref1">{{Cite web | url=https://www.mrta.co.th/th/news/information/ความก-าวหน-าการก-อสร-างรถไฟฟ-า-ณ-30-เมษายน-2561/ | title=ความก้าวหน้าการก่อสร้างรถไฟฟ้า ณ 30 เมษายน 2561 | language=th | trans-title=Progress of electric train construction as of 30 April 2018 | archive-url=https://web.archive.org/web/20191208132503/https://www.mrta.co.th/th/news/information/%E0%B8%84%E0%B8%A7%E0%B8%B2%E0%B8%A1%E0%B8%81-%E0%B8%B2%E0%B8%A7%E0%B8%AB%E0%B8%99-%E0%B8%B2%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%81-%E0%B8%AD%E0%B8%AA%E0%B8%A3-%E0%B8%B2%E0%B8%87%E0%B8%A3%E0%B8%96%E0%B9%84%E0%B8%9F%E0%B8%9F-%E0%B8%B2-%E0%B8%93-30-%E0%B9%80%E0%B8%A1%E0%B8%A9%E0%B8%B2%E0%B8%A2%E0%B8%99-2561/ | website=MRTA Press| archive-date=2019-12-08 | date=30 April 2018}}</ref>

Testing of the final 9.8&nbsp;km, seven-station-section from Wat Phra Sri Mahathat (N17) to Khu Khot (N24) began on 5 October.<ref>{{cite news |date=7 October 2020 |title=BTS tests Green Line trains at seven new stations before public opening at year-end |url=https://www.https://www.nationthailand.com/news/30395767 |url-status=dead |archive-url=https://web.archive.org/web/20130819141428/http://https/ |archive-date=19 August 2013 |access-date=17 February 2022 |newspaper=The Nation}}</ref> The final section was officially opened on 16 December 2020 by the Prime Minister.<ref>{{cite news |date=17 November 2020 |title=นับถอยหลัง 4 ธ.ค. 63 รถไฟฟ้า BTS สายสีเขียว เปิดทุกสถานี เชื่อม 3 จังหวัด |url=https://www.tnnthailand.com/content/62397 |newspaper=TNN Thailand}}</ref>

==== Tamru Extension ''(future)'' ==== There is a plan to extend Sukhumvit Line from Kheha to Tamru for {{convert|10.1|km|abbr=on}}, including 5 additional stations: Sawangkhaniwat, Mueang Boran, Si Chan Pradit, Bang Pu, and Tamru. This extension has been suspended indefinitely until clarity is reached regarding passenger guarantees. {| class="wikitable" style="margin:auto;font-align:center;text-align:center;font-size:90%;&quot;&quot;" ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Code ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="2" span ; |Station Name ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Planned Opening ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Platform Type |- ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="1" span ; |English ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="1" span ; |Thai |- ! colspan="5" |↓ Continue from [[Kheha BTS station|Kheha]] ↓ |- | [[File:BTS E24 opaque.png|25px]] | Sawangkhaniwat | สวางคนิวาส | rowspan="5" |<abbr title="To be announced">TBA</abbr> |Side |- | [[File:BTS E25 opaque.png|25px]] | Mueang Boran | เมืองโบราณ |Side |- | [[File:BTS E26 opaque.png|25px]] | Si Chan Pradit | ศรีจันทร์ประดิษฐ์ |Side |- | [[File:BTS E27 opaque.png|25px]] | Bang Pu | บางปู |Side |- |[[File:BTS E28 opaque.png|24x24px]] |Tamru |ตำหรุ |Side |}

==== Lam Luk Ka Extension ''(future)'' ==== There is a plan to extend Sukhumvit Line from Khu Khot Station eastwards for {{convert|7.8|km|abbr=on}}, including four additional stations: Khlong Sam, Khlong Si, Khlong Ha, and Eastern Ring Road-Lam Luk Ka. This extension has been suspended indefinitely until clarity is reached regarding passenger guarantees. {| class="wikitable" style="margin:auto;font-align:center;text-align:center;font-size:90%;&quot;&quot;" ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Code ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="2" span ; |Station Name ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Planned Opening ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Platform Type |- ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="1" span ; |English ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="1" span ; |Thai |- ! colspan="5" |↓ Continue from [[Khu Khot BTS station|Khu Khot]] ↓ |- | [[File:BTS N25 opaque.png|24x24px]] | Khlong Sam | คลองสาม | rowspan="4" |<abbr title="To be announced">TBA</abbr> |Side |- | [[File:BTS N26 opaque.png|24x24px]] | Khlong Si | คลองสี่ |Side |- | [[File:BTS N27 opaque.png|24x24px]] | Khlong Ha | คลองห้า |Side |- | [[File:BTS N28 opaque.png|24x24px]] | Eastern Ring Road-Lam Luk Ka | วงแหวนตะวันออกลำลูกกา |Side |}

== Opening timeline == {| class="wikitable" style="margin:auto;font-align:center;text-align:center;font-size:80%;&quot;" ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Date ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Project ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Notes |- |5 December 1999 |Bangkok Transit System | align="left" |Full commercial service was commenced from [[Mo Chit BTS station|Mo Chit]] to [[On Nut BTS station|On Nut]] stations along with the [[Silom Line]]. |- |12 August 2011 |Bearing Extension | align="left" |Service extended to [[Bearing BTS station|Bearing station]]. |- |14 May 2010 ! rowspan="5" | | align="left" |Sukhumvit Line was closed from 17.00 onwards due to [[2010 Thai military crackdown]]. |- |29 May 2010 | align="left" |Resumed normal service. |- |22 May 2014 | align="left" |Sukhumvit Line operated with limited hours from 6:00 to 21:00 due to the [[curfew]], which was a result of the [[2014 Thai coup d'état]].<ref>{{Cite web |title=รถไฟฟ้า BTS-MRT ปิดให้บริการ 3 ทุ่มตั้งแต่คืนนี้ เปิด 6 |url=https://www.ryt9.com/s/iq01/1903385 |access-date=2024-09-12 |website=ryt9.com |language=th}}</ref> |- |28 May 2014 | align="left" |Service hours were extended to 06.00-23.00<ref>{{Cite web |title=รถไฟฟ้า BTS-MRT ปรับเวลาเดินรถใหม่ 06.00-23.00 น. ตั้งแต่ 28 |url=https://www.ryt9.com/s/iq02/1906748 |access-date=2024-09-12 |website=ryt9.com |language=th}}</ref> |- |14 June 2014 | align="left" |Resumed normal service. |- |3 April 2017 | rowspan="3" |Samut Prakan Extension | align="left" |Service extended to [[Samrong station]]. |- |6 December 2018 | align="left" |Shuttle service has been deployed from [[Samrong station|Samrong]] to [[Kheha BTS station|Kheha]] stations. |- |11 May 2019 | align="left" |Full commercial service was commenced from [[Mo Chit BTS station|Mo Chit]] to [[Kheha BTS station|Kheha]] stations.<ref>{{Cite web |title=บีทีเอสปรับเดินรถสายสุขุมวิท วิ่งถึงสถานีเคหะฯ ไม่ต้องเปลี่ยนขบวน |url=https://www.thairath.co.th/money/economics/thailand_econ/1563628 |access-date=2024-09-27 |website=THAIRATH Money}}</ref> |- |9 August 2019 | rowspan="3" |Khu Khot Extension | align="left" |Service extended to [[Ha Yaek Lat Phrao BTS station|Ha Yaek Lat Phrao station]]. |- |4 December 2019 | align="left" |Service extended to [[Kasetsart University BTS station|Kasetsart University station]]. |- |5 June 2020 | align="left" |Service extended to [[Wat Phra Sri Mahathat station|Wat Phra Si Mahathat station]]. |- |17 October 2020 ! rowspan="2" | | align="left" |Sukhumvit Line was temporarily closed from 15.00 due to the [[2020–2021 Thai protests]].<ref>{{Cite web |title=ความเคลื่อนไหวก่อนชุมนุม 17 ตุลา |url=https://www.thaipbs.or.th/news/content/297469 |access-date=2024-09-12 |website=Thai PBS |language=th}}</ref> |- |18 October 2020 | align="left" | [[Mo Chit BTS station|Mo Chit]], [[Ha Yaek Lat Phrao BTS station|Ha Yaek Lat Phrao]], [[Phahon Yothin 24 BTS station|Phahon Yothin 24]], [[Asok BTS station|Asok]], [[Udom Suk BTS station|Udom Suk]], and [[Bang Na BTS station|Bang Na]] stations were temporarily closed due to the protests from 14.30<ref>{{Cite web |date=2020-10-18 |title=รถไฟฟ้าMRT ปิด 5 สถานี ส่วน BTS ปิด10 สถานี จนกว่าสถานการณ์คลี่คลาย |url=https://www.thairath.co.th/news/politic/1955750 |access-date=2024-09-12 |website=www.thairath.co.th |language=th}}</ref> |- |16 December 2020 |Khu Khot Extension | align="left" |Service extended to [[Khu Khot BTS station|Khu Khot station]]. |- |28 March 2025 ! rowspan="2" | | align="left" |All services were halted because of the [[2025 Myanmar earthquake]]. |- |29 March 2025 | align="left" |Resumed normal service.<ref>{{Cite web |last=Mail |first=Pattaya |date=2025-03-30 |title=Daily summary of the earthquake situation; Bangkok’s BTS and MRT train services resume |url=https://www.pattayamail.com/thailandnews/daily-summary-of-the-earthquake-situation-bangkoks-bts-and-mrt-train-services-resume-495959 |access-date=2025-04-09 |website=Pattaya Mail |language=en-US}}</ref> |}

== Station== {{see|List of rapid transit stations in Bangkok}} {| class="wikitable" style="margin:auto;font-align:center;text-align:center;font-size:80%;&quot;" ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Code ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="2" span |Station Name ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" |'''Image''' ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" |Opened ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" |Platform Type ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" |Park & Ride ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Transfers ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" rowspan="2" span ; |Notes |- ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="1" span |English ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="1" span |Thai |- | [[File:BTS N24.svg|25px]] | [[Khu Khot BTS station|Khu Khot]] | คูคต |[[File:Khu Khot Station.jpg|frameless]] | rowspan="7" |{{Start date and age|2020|12|16|df=y}} | style="text-align: center;" |Side |√ | | |- | [[File:BTS N23.svg|25px]] | [[Yaek Kor Por Aor BTS station|Yaek Kor Por Aor]] | แยก คปอ. |[[File:Yaek Kor Por Aor BTS station 02.jpg|frameless]] | style="text-align: center;" |Side |√ | | |- | [[File:BTS N22.svg|25px]] | [[Royal Thai Air Force Museum BTS station|Royal Thai Air Force Museum]] | พิพิธภัณฑ์กองทัพอากาศ |[[File:Royal Thai Air Force Museum BTS station view from the street.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS N21.svg|25px]] | [[Bhumibol Adulyadej Hospital BTS station|Bhumibol Adulyadej Hospital]] | โรงพยาบาลภูมิพลอดุลยเดช |[[File:Bhumibol Adulyadej Hospital station 20230903-1.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS N20.svg|25px]] | [[Saphan Mai BTS station|Saphan Mai]] | สะพานใหม่ |[[File:Saphan Mai station 20230903-1.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS N19.svg|25px]] | [[Sai Yud BTS station|Sai Yud]] | สายหยุด |[[File:Sai Yud BTS station view from the street.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS N18.svg|25px]] | [[Phahon Yothin 59 BTS station|Phahon Yothin 59]] | พหลโยธิน 59 |[[File:Phahonyothin 59 BTS station view from the street.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS N17.svg|25px]] |[[Wat Phra Sri Mahathat BTS station|Wat Phra Sri Mahathat]] | วัดพระศรีมหาธาตุ |[[File:BTS Wat Phra Sri Mahathat Station,Bangkok (17).jpg|frameless]] | rowspan="4" |{{Start date and age|2020|06|05|df=y}} | style="text-align: center;" |Island | - | align="left" |'''Interchange station''' with {{rint|bangkok|Pink}} | |- | [[File:BTS N16.svg|25px]] | [[11th Infantry Regiment BTS station|11th Infantry Regiment]] | กรมทหารราบที่ 11 |[[File:BTS 11th Infantry Regiment - Platform - Inbound .jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS N15.svg|25px]] | [[Bang Bua BTS station|Bang Bua]] | บางบัว |[[File:BTS Bang Bua - ticketing machines and exits.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS N14.svg|25px]] | [[Royal Forest Department BTS station|Royal Forest Department]] | กรมป่าไม้ |[[File:BTS Royal Forest Department - station.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS N13.svg|25px]] | [[Kasetsart University BTS station|Kasetsart University]] | มหาวิทยาลัยเกษตรศาสตร์ |[[File:BTS Kasetsart University - Station close up.jpg|frameless]] | rowspan="4" |{{Start date and age|2019|12|04|df=y}} | style="text-align: center;" |Side | - | align="left" |'''Connecting station''' to {{rint|bangkok|Brown}} ''<small>(future)</small>'' | |- | [[File:BTS N12.svg|25px]] | [[Sena Nikhom BTS station|Sena Nikhom]] | เสนานิคม |[[File:BTS Sena Nikhom - Station.jpg|frameless]] | style="text-align: center;" |Side | - | | |- |[[File:BTS N11.svg|25px]] |[[Ratchayothin BTS station|Ratchayothin]] |รัชโยธิน |[[File:BTS Ratchayothin - Station.jpg|frameless]] |Side | - | style="text-align: left;" rowspan="2" |Proposed connecting station to {{rint|bangkok|Yellow}}. ({{section link|Yellow_Line_(Bangkok)#Northern_extension}}) | |- | [[File:BTS N10.svg|25px]] | [[Phahon Yothin 24 BTS station|Phahon Yothin 24]] | พหลโยธิน 24 |[[File:BTS Phahon Yothin 24 - Station.jpg|frameless]] | style="text-align: center;" |Side | - | |- | [[File:BTS N9.svg|25px]] | [[Ha Yaek Lat Phrao BTS station|Ha Yaek Lat Phrao]] | ห้าแยกลาดพร้าว |[[File:Ha Yaek Lat Phrao BTS station 20230903.jpg|frameless]] |{{Start date and age|2019|08|09|df=y}} | style="text-align: center;" |Island | - | align="left" |'''Connecting station''' to [[Phahon Yothin MRT station|Phahon Yothin]] for {{rint|bangkok|Blue}} , via a 330-metre elevated pedestrian walkway. | |- | [[File:BTS N8.svg|25px]] | [[Mo Chit BTS station|Mo Chit]] | หมอชิต |[[File:Chatuchak Park and Mo Chit Station.jpg|frameless]] | rowspan="2" |{{Start date and age|1999|12|05|df=y}} | style="text-align: center;" |Side |√ | align="left" |'''Connecting station''' to [[Chatuchak Park MRT station|Chatuchak Park]] for {{rint|bangkok|Blue}} | |- | [[File:BTS N7.svg|25px]] | [[Saphan Khwai BTS station|Saphan Khwai]] | สะพานควาย |[[File:Saphan Khwai Station 20230903-1.jpg|frameless]] | style="text-align: center;" |Side | - | | |-bgcolor=lightgrey | [[File:BTS N6 opaque.png|25px]] | [[Sena Ruam BTS station|Sena Ruam]] | เสนาร่วม<ref>{{Cite news|url=https://www.khaosodenglish.com/news/transpo/2019/04/10/construction-of-sathorn-bts-ghost-station-underway/|title=Construction of Sathorn BTS 'Ghost Station' Underway|last1=Charuvastra|first1=Teeranai|date=2019-04-10|website=Khaosod English|language=en-US|access-date=2020-03-25}}</ref> | | style="text-align: center;" |<small>''<abbr title="To be announced">TBA</abbr>''</small> | style="text-align: center;" |Side | - | | align="left" |''Provisional station'' |- | [[File:BTS N5.svg|25px]] | [[Ari BTS station|Ari]] | อารีย์ |[[File:Ari Station 20230903-1.jpg|frameless]] | rowspan="15" |{{Start date and age|1999|12|05|df=y}} | style="text-align: center;" |Side | - | | |- | [[File:BTS N4.svg|25px]] | [[Sanam Pao BTS station|Sanam Pao]] | สนามเป้า |[[File:Sanam Pao Station 20230903-1.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS N3.svg|25px]] | [[Victory Monument BTS station|Victory Monument]] | อนุสาวรีย์ชัยสมรภูมิ |[[File:Victory Monument Station 20230903-3.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS N2.svg|25px]] | [[Phaya Thai BTS station|Phaya Thai]] | พญาไท |[[File:Phaya Thai BTS Station 20230923-1.jpg|frameless]] | style="text-align: center;" |Side | - | align="left" |'''Connecting station''' to;<br>• {{rint|bangkok|Airport}}<br>• {{rint|bangkok|LightRed}} ''<small>(future)</small>'' | |- | [[File:BTS N1.svg|25px]] | [[Ratchathewi BTS station|Ratchathewi]] | ราชเทวี |[[File:Ratchatewi Station platform (Dec 2022).jpg|frameless]] | style="text-align: center;" |Side | - | align="left" |'''Connecting station''' to {{rint|bangkok|Orange}} ''<small>(under construction)</small>'' | |- | [[File:BTS CEN.svg|25px]] | [[Siam BTS station|Siam]] | สยาม |[[File:BTS Siam 2022.jpg|frameless]] | style="text-align: center;" |Stacked Island | - | align="left" |'''[[Cross-platform interchange]]''' with {{rint|bangkok|Silom}} |- | [[File:BTS E1.svg|25px]] | [[Chit Lom BTS station|Chit Lom]] | ชิดลม |[[File:แยกชิดลม 2021 CHIT LOM INTERSECTION.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS E2.png|25px]] | [[Phloen Chit BTS station|Phloen Chit]] | เพลินจิต |[[File:Rosewood Bangkok 2021.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS E3.svg|25px]] | [[Nana BTS station|Nana]] | นานา |[[File:Nana BTS Skytrain Station - panoramio.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS E4.svg|25px]] | [[Asok BTS station|Asok]] | อโศก |[[File:Bangkok (28384726905).jpg|frameless]] | style="text-align: center;" |Side | - | align="left" |'''Connecting station''' to [[Sukhumvit MRT station|Sukhumvit]] for {{rint|bangkok|Blue}} | |- | [[File:BTS E5.svg|25px]] | [[Phrom Phong BTS station|Phrom Phong]] | พร้อมพงษ์ |[[File:202307 Platform of Phrom Phong BTS Station.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS E6.svg|25px]] | [[Thong Lo BTS station|Thong Lo]] | ทองหล่อ |[[File:Thong Lo Station platform.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS E7.svg|25px]] | [[Ekkamai BTS station|Ekkamai]] | เอกมัย |[[File:E7 Ekkamai Station.jpg|frameless]] | style="text-align: center;" |Side | - | align="left" |'''Connecting statio'''n to {{rint|bangkok|Grey}} <small>''(north section; future)''</small> | |- | [[File:BTS E8.svg|25px]] | [[Phra Khanong BTS station|Phra Khanong]] | พระโขนง |[[File:Phra Khanong Station.jpg|frameless]] | style="text-align: center;" |Side | - | align="left" |'''Connecting station''' to {{rint|bangkok|Grey}} <small>''(south section; future)''</small> | |- | [[File:BTS E9.svg|25px]] | [[On Nut BTS station|On Nut]] | อ่อนนุช |[[File:BTS On Nut Station 20151107.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS E10.svg|25px]] | [[Bang Chak BTS station|Bang Chak]] | บางจาก |[[File:E10 Bang Chak Station.jpg|frameless]] | rowspan="5" |{{Start date and age|2011|08|12|df=y}} | style="text-align: center;" |Side | - | | |- | [[File:BTS E11.svg|25px]] | [[Punnawithi BTS station|Punnawithi]] | ปุณณวิถี |[[File:E11 Punnawithi Station.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS E12.svg|25px]] | [[Udom Suk BTS station|Udom Suk]] | อุดมสุข |[[File:E12 Udom Suk Station.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS E13.svg|25px]] | [[Bang Na BTS station|Bang Na]] | บางนา |[[File:E13 Bang Na Station.jpg|frameless]] | style="text-align: center;" |Side | - | align="left" |'''Connecting station''' ''to'' [[Bang Na–Suvarnabhumi light rail|Bang Na-Suvarnabhumi LRT]] ''<small>(future)</small>'' | |- | [[File:BTS E14.svg|25px]] | [[Bearing BTS station|Bearing]] | แบริ่ง |[[File:Bearing Station name sign.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS E15.svg|25px]] | [[Samrong BTS station|Samrong]] | สำโรง |[[File:Samrong BTS station in March 2022.jpg|frameless]] |{{Start date and age|2017|04|03|df=y}} | style="text-align: center;" |Island | - | align="left" |'''Interchange station''' to {{Rint|bangkok|Yellow}} ''via transfer gates'' | |- | [[File:BTS E16.svg|25px]] | [[Pu Chao BTS station|Pu Chao]] | ปู่เจ้า |[[File:E16 Pu Chao Station.jpg|frameless]] | rowspan="8" |{{Start date and age|2018|12|06|df=y}} | style="text-align: center;" |Side | - | | |- | [[File:BTS E17.svg|25px]] | [[Chang Erawan BTS station|Chang Erawan]] | ช้างเอราวัณ |[[File:E17 Chang Erawan Station.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS E18.svg|25px]] | [[Royal Thai Naval Academy BTS station|Royal Thai Naval Academy]] | โรงเรียนนายเรือ |[[File:E18 Royal Thai Naval Academy Station.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS E19.svg|25px]] | [[Pak Nam BTS station|Pak Nam]] | ปากน้ำ |[[File:Pak Nam Station 20230306-3.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS E20.svg|25px]] | [[Srinagarindra BTS station|Srinagarindra]] | ศรีนครินทร์ |[[File:E20 Srinagarindra Station.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS E21.svg|25px]] | [[Phraek Sa BTS station|Phraek Sa]] | แพรกษา |[[File:Phraek Sa Station 20230930-1.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS E22.svg|25px]] | [[Sai Luat BTS station|Sai Luat]] | สายลวด |[[File:Sai Luat Station 20230930-1.jpg|frameless]] | style="text-align: center;" |Side | - | | |- | [[File:BTS E23.svg|25px]] | [[Kheha BTS station|Kheha]] | เคหะฯ |[[File:Kheha BTS Station.jpg|frameless]] | style="text-align: center;" |Side |√ | | |}

== Infrastructure ==

=== Depot === The Sukhumvit Line has three depots: Mo Chit Depot, Khu Khot Depot, and Kheha Depot.

Mo Chit Depot serves as the central operations center for the [[BTS Skytrain|BTS Skytrain network]]. It is located near [[Mo Chit BTS station|Mo Chit Station]], opposite [[Chatuchak Park]], and was built as part of the original phase of the [[BTS Skytrain|BTS Skytrain System]], completed in 1999.

Khu Khot Depot, situated in the [[Sai Mai district|Sai Mai District]] of [[Bangkok]] near [[Khu Khot BTS station|Khu Khot Station]], was constructed as part of the Khu Khot Extension and was completed in 2019.

The third facility, Kheha Depot, is located in [[Mueang Samut Prakan district|Mueang Samut Prakan District]], [[Samut Prakan province|Samut Prakan Province]]. It was built alongside the Samut Prakan Extension and completed in 2018.

Both Mo Chit and Khu Khot Depots are also shared with the [[Silom Line]]. Trains from these depots operate regular service on the Sukhumvit Line before switching to the [[Silom Line]] at [[Siam BTS station|Siam Station]], continuing until they terminate at [[Bang Wa station|Bang Wa Station]].

=== Park & Ride === Sukhumvit Line offers five parking lots located at [[Mo Chit BTS station|Mo Chit]], [[Victory Monument BTS station|Victory Monument]], [[Asok BTS station|Asok]], and [[Samrong station|Samrong]] stations. In addition, Park & Ride buildings owned and operated by the [[Mass Rapid Transit Authority of Thailand]] are available at [[Khu Khot BTS station|Khu Khot]], [[Yaek Kor Por Aor BTS station|Yaek Kor Por Aor]], and [[Kheha BTS station|Kheha]] stations.<ref>{{Cite web |title=Park & Ride |url=https://www.bts.co.th/eng/parking/parking-page.html |access-date=2025-05-08 |website=www.bts.co.th}}</ref>

=== Station === There are 55 stations on the Sukhumvit Line, all of which are elevated. Most stations feature a [[Side platform|side platform layout]], with the exceptions of [[Ha Yaek Lat Phrao BTS station|Ha Yaek Lat Phrao]] and [[Samrong station|Samrong]] stations, which have [[island platform]]s. [[Siam BTS station|Siam Station]] is unique with a stacked [[Island platform|island platform layout]], allowing for a [[cross-platform interchange]] with the [[Silom Line]].

Stations on the Sukhumvit Line are generally 150 meters in length and are equipped with [[Platform screen doors|half-height platform screen doors]] at most locations. However, some stations—such as [[Mo Chit BTS station|Mo Chit]], [[Saphan Khwai BTS station|Saphan Khwai]], [[Ari BTS station|Ari]], [[Sanam Pao BTS station|Sanam Pao]], [[Ratchathewi station|Ratchathewi]], [[Phloen Chit BTS station|Phloen Chit]], [[Nana BTS station|Nana]], [[Ekkamai BTS station|Ekkamai]], [[Phra Khanong BTS station|Phra Khanong]], [[Bang Chak BTS station|Bang Chak]], [[Punnawithi BTS station|Punnawithi]], [[Udom Suk BTS station|Udom Suk]], [[Bang Na BTS station|Bang Na]], and [[Bearing BTS station|Bearing]]—do not have [[platform screen doors]].

=== Rolling stocks === {{multiple image | align = center | direction = horizontal | header = Rolling stocks of Sukhumvit Line | header_align = center | image1 = Bangkok Skytrain BTS 4.jpg | caption1 = {{center|'''EMU-A1''' approaching [[Victory Monument BTS Station|Victory Monument station]]}} | width1 = {{#expr: (150 * 1600/ 1200) round 0}} | image2 = Bangkok Skytrain BTS 3.jpg | caption2 = {{center|'''EMU-A2''' heading towards [[Sanam Pao BTS Station|Sanam Pao station]]}} | width2 = {{#expr: (151.5 * 1600/ 1200) round 0}} | image3 = Bangkok BTS 03.jpg | width3 = {{#expr: (150 * 1600/ 1200) round 0}} | caption3 = {{center|'''EMU-B1/B2''' approaching [[Ha Yaek Lat Phrao BTS Station|Ha Yaek Lat Phrao station]]}} | image4 = (THA-Bangkok) BTS 880-980 @ Ekkamai 2024-02-13.jpg | width4 = {{#expr: (178 * 1600/ 1200) round 0}} | caption4 = {{center|'''EMU-B3''' at [[Ekkamai BTS Station|Ekkamai station]]}} }}

== Operation == The Sukhumvit Line operates from 06:00 to 24:00 every day. During rush hour, there are two main service patterns:

* Full Line operation from Khu Khot to Kheha * Short-run train from Mo Chit to Samrong

Apart from these two service patterns, some trains might terminate at [[Kasetsart University BTS station|Kasetsart University]] and [[Ha Yaek Lat Phrao BTS station|Ha Yaek Lat Phrao]] or operate as through-running trains to/from [[Bang Wa station]] on the [[Silom Line]].

=== Headways === {| class="wikitable" style="margin:auto;font-align:center;text-align:center;font-size:80%;&quot;" ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" colspan="3" |'''Sukhumvit Line headway'''<ref>{{Cite web |title=เวลาและความถี่การเดินรถ |url=https://www.bts.co.th/service/timetable.html |access-date=2024-11-16 |website=www.bts.co.th}}</ref> |- ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Time ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Section ! style="background:#{{rcr|BTS Skytrain|Sukhumvit}}; color:white;" |Headway (Minutes:Seconds) |- ! colspan="3" |Monday - Friday |- |'''06:00 - 07:00''' |Full Line |05:00 |- | rowspan="2" |'''07:00 - 09:00''' |[[File:BTS_N8.svg|20x20px]] Mo Chit - [[File:BTS_E15.svg|20x20px]] Samrong |02:40 |- | rowspan="4" |Full Line |05:20 |- |'''09:00 - 09:30''' |03:35 |- |'''09:30 - 16:00''' |06:30 |- |'''16:00 - 16:30''' |04:25 |- | rowspan="2" |'''16:30 - 20:00''' |[[File:BTS_N8.svg|20x20px]] Mo Chit - [[File:BTS_E15.svg|20x20px]] Samrong |02:40 |- | rowspan="4" |Full Line |05:20 |- |'''20:00 - 21:00''' |04:25 |- |'''21:00 - 22:00''' |06:00 |- |'''22:00 - 24:00''' |08:00 |- ! colspan="3" |Saturday to Sunday and Public Holiday |- |'''06:00 - 08:00''' | rowspan="2" |Full Line |07:00 |- |'''08:00 - 11:00''' |05:55 |- | rowspan="2" |'''11:00 - 21:00''' |[[File:BTS_N8.svg|20x20px]] Mo Chit - [[File:BTS_E15.svg|20x20px]] Samrong |04:30 |- | rowspan="3" |Full Line |06:00 |- |'''21:00 - 22:00''' |07:00 |- |'''22:00 - 24:00''' |08:00 |}

== Route Map == {{Wide image|Sukhumvit Line and Silom Line Map.svg|1600px}}

== Gallery == <gallery widths="270" heights="270" perrow="5"> File:BTS Constitution protectors monument - the monument underpass.jpg|Sukhumvit Line viaduct at Lak Si roundabout. File:ตึกช้าง และ รถไฟฟ้าเดินทางออกจากสถานีรัชโยธิน (Elephant Building and BTS Skytrain).jpg|'''EMU-A2''' with [[Elephant Building]] behind at [[Ratchayothin BTS station|Ratchayothin station]]. File:Chatuchak Park,Phahonyithin Road,Chomphon, bangkok - panoramio.jpg|Mo Chit Depot in 2013. File:BTS Skytrain at Victory Monument.jpg|'''EMU-B3''' at [[Victory Monument (Bangkok)|Victory Monument]]. File:BTS EMU-B and EMU-B3.jpg|'''EMU-B1/B2''' (left) and '''EMU-B3''' at [[Victory Monument BTS station|Victory Monument station]]. File:Pathumwan rd and Siam area.jpg|View of [[Pathum Wan district]]. File:Sukhumvit Line viaduct from Pathum Wan Skywalk.jpg|Sukhumvit Line viaduct from Pathum Wan Skywalk. File:BTS Siam Station 5.jpg|The upper-level platform at [[Siam BTS station|Siam station]] in 2007, before the installation of platform screen doors File:View from Chit Lom station.jpg|View from [[Chit Lom BTS station|Chit Lom station]]. File:Bangkok Skytrain 01.jpg|3-cars '''EMU-A1''' from 2007 File:Phloen Chit Road.jpg|[[Phloen Chit Road]] with Sukhumvit Line viaduct above. File:Sukhumwit Road with BTS Asok and Asok Montri Rd.jpg|Sukhumvit Line at Asok Junction. File:Emsphere 21-12-2023 (1).jpg|[[EmSphere]] from [[Phrom Phong BTS station|Phrom Phong station]]. File:ไบเทค บางนา BITEC BANGNA (3).jpg|'''EMU-A1''' at [[Bang Na BTS station|Bang Na station]] with [[Bangkok International Trade and Exhibition Centre|BITEC]] behind. File:Samrong Station,Samutprakan (4).jpg|'''EMU-A2''' departing [[Samrong station]]. </gallery>

==See also == * [[Mass Rapid Transit Master Plan in Bangkok Metropolitan Region]] * [[BTS Skytrain]] * [[Silom Line]] * [[MRT (Bangkok)]] * [[MRT Brown Line]] * [[MRT Blue Line]] * [[MRT Grey Line]] * [[MRT Light Blue Line]] * [[MRT Orange Line]] * [[MRT Pink Line]] * [[MRT Purple Line]] * [[MRT Yellow Line]] * [[AERA1 City]] * [[SRT Dark Red Line]] * [[SRT Light Red Line]] * BMA [[BMA Gold Line|Gold Line]] * [[Bangkok BRT]]

==References== {{reflist}}

{{Bangkok Rapid Transit stations |Sukhumvit=yes }} {{Public transport in Bangkok}} {{Urban Rail Transit in ASEAN}}

[[Category:BTS Skytrain lines]] [[Category:Railway lines opened in 1999]] [[Category:1999 establishments in Thailand]] [[Category:Standard-gauge railways in Thailand]] [[Category:750 V DC railway electrification]] [[Category:Transport in Samut Prakan province]]