page_title: Trams in Geneva
section_title: TCMC and TCOB construction (2007–2011)
hierarchical_section_title: Trams in Geneva / History / TCMC and TCOB construction (2007–2011)
caption_attribution_description: Français&#160;: Chantier du tram "TCOB", à Onex, Genève, février 2011
context_page_description: The Geneva tramway network is a network of tramways forming the core element of the public transport system in Geneva, Switzerland. It is operated by Transports Publics Genevois, and is supplemented by the Geneva trolleybus system and the Geneva bus system.
  Opened in 1862, the network had grown sufficiently by 1920 to serve large parts of the surrounding countryside. However, by 1960 it had contracted to just one line. Since 1995, it has been greatly expanded. It presently has five tram lines, and further expansions are planned.
context_section_description: The next network expansion phases included the Tram Cornavin–Meyrin–CERN (TCMC) project, the construction of which began in early 2006, and the Tram Cornavin–Onex–Bernex (TCOB), for which the Swiss Federal Council awarded the concession in January 2007.
  The first section of the TCMC, between Cornavin and Avanchet, was opened on 8 December 2007.  Initially, it formed part of the extended line 16 (Moillesulaz–Avanchet) and the new line 14 (Bachet–Avanchet). On same date, line 17 was extended, from Eaux-Vives station to the disused Chêne-Bourg station, and thus revived scheduled services on the short local branch line, including its terminal loop, after a long absence.
  The first TCMC section was built in a double track configuration.  However, the absence of any balloon loop at the provisional terminus at Avanchet, or at the permanent termini at Meyrin–Gravière and CERN, as well as the inclusion on this section of several stations with island platforms, made necessary the exclusive use of bidirectional vehicles to run services on the section.  As the numbers of the Flexity Outlook trams in the fleet were then rather limited, the TPG exercised its existing option for 17 more vehicles, while in the meantime the previous through-connection of line 12 with line 16 at the Moillesulaz terminus had to be suspended.
  According to various sources, the opening of the second stage of the TCMC (Avanchet–Meyrin) took place on 12 December 2009, with the entry into service of the section to Meyrin (Gravière). On 30 April 2011, operations commenced on the section to CERN.
  The TCOB route to Bernex P+R, which includes, amongst other things, a second crossing of the Rhône, went into service at the end of 2011. The first – very short – section of this route, between Coutance and Genève-Cornavin station, had already commenced operations at the timetable change in December 2010. A new line 18 ran on the route, and was extended to CERN in May 2011.
  For the inauguration of the TCOB route, the TPG ordered 32 Tango trams, made by the Swiss company Stadler Rail. Like the Cityrunners, the Tango trams are bidirectional. 
  After the new route to Bernex P+R was commissioned, the network was simplified. There are now only four tram lines, nos. 12, 14, 15 and 18. The use of the previous lines 13, 16 and 17 were discontinued, and only one line now operates on most section of track. Although these changes simplify tram operations, they also mean that points on the inner city sections, and in particular Genève-Cornavin station, can no longer be reached from all parts of the network (e.g. Genève-Cornavin is no longer directly served by line 12) without the need to change trams en route.
caption: TCOB track construction site in Onex, February 2011.
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