• Source: SelTrac
    • SelTrac is a digital railway signalling technology used to automatically control the movements of rail vehicles. It was the first fully automatic moving-block signalling system to be commercially implemented.
      SelTrac was originally developed in the 1970s by Standard Elektrik Lorenz (the "SEL" in the name) of Germany for the Krauss-Maffei Transurban, an automated guideway transit system proposed for the GO-Urban network in the Greater Toronto Area in Canada. Although the GO-Urban project failed, the Transurban efforts were taken over by an Ontario consortium led by the Urban Transportation Development Corporation (UTDC), and adapted to become its Intermediate Capacity Transit System (ICTS). This technology was first used on the SkyTrain network in Vancouver, British Columbia and the Scarborough RT in Toronto, Ontario.
      SelTrac was primarily sold and developed by Alcatel, through a subsidiary. SelTrac was then sold by Thales from their Canadian unit (, after it purchased many of Alcatel's non-telephony assets.
      On May 31, 2024, Hitachi Rail completed the acquisition of Thales' Ground Transportation Systems (GTS) business, making SelTrac a product of Hitachi.


      Description


      SelTrac uses the twisted-loop concept developed by Siemens in the 1950s.
      Data communication is provided with either low frequency inductive loop or a high bandwidth, open-standards wireless system incorporating spread-spectrum radio technology.


      Installations


      SelTrac is installed in many railways around the world, including the following:

      Ankara Metro Line M1 1997 SelTrac CBTC DTO
      Beijing Subway Line 4 2009 SelTrac CBTC/R (radio) ATO with Attendant
      Busan–Gimhae Light Rail Transit 2011 SelTrac CBTC/R UTO
      Detroit People Mover 1987 SelTrac CBTC UTO
      Dubai Metro – Red and Green Lines 2009/2011 SelTrac CBTC UTO
      Guangzhou Metro
      Line 3 2009/10 SelTrac CBTC DTO
      Line 9 2017 SelTrac CBTC DTO
      Line 14 2017 SelTrac CBTC DTO
      Line 21 2017 SelTrac CBTC DTO
      Hong Kong International Airport APM 2014/15 SelTrac CBTC/R UTO
      Hong Kong MTR
      Tuen Ma line 2003 SelTrac CBTC DTO
      West Rail line 2003
      Ma On Shan line 2004
      Kowloon Southern Link 2009
      Tuen Ma line (Phase 1) 2020
      Tuen Ma line (full line) 2021
      Disneyland Resort line 2005 SelTrac CBTC/R UTO
      Hyderabad Metro Rail (Lines 1, 2, 3) 2017 SelTrac CBTC/R STO
      Incheon Subway Line 2 2014 SelTrac CBTC/R UTO
      Istanbul Metro M4 Kadikoy-Kartal Line 2012 SelTrac CBTC STO
      Jacksonville Skyway ASE 1998 SelTrac CBTC UTO
      John F. Kennedy International Airport AirTrain JFK APM 2003 SelTrac CBTC UTO
      Kuala Lumpur Rapid Rail
      Kelana Jaya Line 1998/2014 SelTrac CBTC UTO
      Ampang Line 2015 SelTrac CBTC/R DTO/UTO
      Las Vegas Monorail 2004 SelTrac CBTC/R UTO
      London Docklands Light Railway 1995 SelTrac CBTC DTO
      Lewisham Extension 1999
      London City Airport Extension 2005
      Woolwich Arsenal Extension 2009
      Stratford Extension 2011
      London Underground
      Jubilee line 2011 SelTrac TBTC STO
      Northern line 2014 SelTrac TBTC STO
      Metropolitan, District, Circle, Hammersmith & City 2020 SelTrac CBTC/R STO
      Mecca Metro 2011 SelTrac CBTC UTO
      Newark Liberty International Airport AirTrain Newark 1996/2001 SelTrac CBTC UTO
      New York City Subway
      IRT Flushing Line 2016 SelTrac CBTC/R STO
      Ottawa O-Train Confederation Line 2018 SelTrac CBTC/R STO
      Paris Metro Line 13 – Ouragan 2012 SelTrac CBTC/R DTO
      SFMTA Muni Metro (Market Street subway) 1997 SelTrac CBTC DTO
      Seoul Metropolitan Subway Shinbundang Line 2011 SelTrac CBTC/R UTO
      Shanghai Metro
      Line 6 2011 SelTrac CBTC/R STO
      Line 8 2011 SelTrac CBTC/R STO
      Line 9 2011 SelTrac CBTC/R STO
      Line 7 2010 SelTrac CBTC/R STO
      Line 11 2010 SelTrac CBTC/R STO
      Singapore MRT
      North South line 2017/2018 SelTrac CBTC/R DTO
      East West line 2017/2018 SelTrac CBTC/R DTO
      Tampa International Airport APM 1992 SelTrac CBTC UTO
      Toronto rapid transit 2008/10 SelTrac Speed/Signal Safeguard
      Line 3 Scarborough 1985 SelTrac CBTC DTO
      Toronto streetcar electronic track switching system
      Vancouver TransLink SkyTrain
      Vancouver SkyTrain - Expo Line 1985 SelTrac CBTC UTO
      Vancouver SkyTrain - Millennium Line 2002 SelTrac CBTC UTO
      Vancouver SkyTrain - Canada Line 2009 SelTrac CBTC UTO
      Vancouver SkyTrain - Evergreen Line 2016 SelTrac CBTC UTO
      Walt Disney World Monorail 1989 SelTrac ATP Disney/TGI
      Washington Dulles Airport AeroTrain APM 2009 SelTrac CBTC/R UTO
      Wuhan Metro Line 1 2004/10 SelTrac CBTC DTO


      SelTrac Incidents


      2019 MTR Tsuen Wan Line CBTC accident - no fatalities but two MTR staff sent to hospital for observations
      2017 Joo Koon rail accident - no fatalities but 38 injuries including 2 SMRT staff


      References




      External links


      Official website
      SelTrac technology
      Moving Block Why do we Need It

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