Joo Koon station
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Changi Airport Skytrain
Thomson–East Coast Line
Thomson–East Coast Line
|Address||91 Joo Koon Circle|
|Line(s)||East West Line|
|28 February 2009||Station officially opened|
|16 November 2017 - 26 May 2018||Station (towards Tuas Link) closed due to the train collision|
(Except 10 December, 17 December 2017, 29 April, 6 May, 13 May and 20 May 2018)
|10 December 2017||Station closed due to the upgrading of signaling system on the East West Line|
|17 December 2017|
On 15 November 2017 at 8.18am, 2 C151A trains collided at this station. A train fault caused the first train heading in the direction of Tuas Link to stall at the station. A minute later, a second train stopped behind the first and then "moved forward unexpectedly", resulting in the collision. 36 passengers and 2 SMRT staff sustained light to moderate injuries, and have been conveyed to nearby hospitals.
Investigation found that the first train had a safety protection feature removed when it went over a faulty signalling circuit. That safety protection feature was designed to fix a known bug which wrongly designated the six-car train as a three-car train under certain circumstances. While the first train was being detrained and the automatic platform doors were opened, a separate protection module was activated to block off the entire length of the westbound platform. The module notified the second train's signalling computer that the westbound platform was occupied and to stay clear of the platform. The second train stopped at the correct distance behind the first train while the automatic platform doors were open. However, once the doors were closed, the platform length protection module was removed. When the signalling on the second train detected the first train as only three cars instead of six, it started moving to close the perceived gap between both trains for the distance of three cars, thus allowing the acceleration of the second train and the rear-end collision with the first train.
|L2||Concourse||Faregates, Ticketing Machines, Passenger Service Centre|
|L1||Street Level||Joo Koon Bus Interchange|
|A||Joo Koon Circle, Joo Koon Bus Interchange, Fairprice Hub|
|B||Joo Koon Circle, Upper Jurong Road|
First/Last Train Timing
|Destination||First Train||Last Train|
|Mon − Fri||Sat||Sun & P.H.||Daily|
|East West Line|
|Bus Stop||Exit||Bus Service|
|(24009) Joo Koon Int||A|
|(23499) Joo Koon Stn Exit A||A|
|(23491) Joo Koon Stn Exit B||B|
- "Update on Train Services on Tuas West Extension". Land Transport Authority (16 November 2017).
- "2 full-day shutdowns, shorter operating hours for 19 NSEWL MRT stations in December: LTA, SMRT". Channel NewsAsia (21 November 2017).
- "Joint Statement by the Land Transport Authority (LTA) & SMRT - Joo Koon train incident". Land Transport Authority (15 November 2017).
- "Update on Train Incident at Joo Koon Station". Land Transport Authority (15 November 2017).
- "Joo Koon train collision". Channel NewsAsia (19 November 2017).
- "Joo Koon collision: 'Inadvertent removal' of software fix led to collision". Adrian Lim (Straits Times, 16 November 2017)
|East West Line||[ V • T • ]|
|Stations||Pasir Ris • Tampines • Simei • Tanah Merah • Bedok • Kembangan • Eunos • Paya Lebar • Aljunied • Kallang • Lavender • Bugis • City Hall • Raffles Place • Tanjong Pagar • Outram Park • Tiong Bahru • Redhill • Queenstown • Commonwealth • Buona Vista • Dover • Clementi • Jurong East • Chinese Garden • Lakeside • Boon Lay • Pioneer • Joo Koon • Gul Circle • Tuas Crescent • Tuas West Road • Tuas Link|
|Changi Airport ExtensionTanah Merah • Expo • Changi Airport|
|Rolling Stock||C151 • C151A • C151B • C151C • C651 • C751B • CR151|
|Depots||Changi • Ulu Pandan • Tuas • East Coast|