Western extension of the T1, from Colombes to Gabriel Péri
The western extension of tramway T1 is designed primarily to serve Asnières, Bois-Colombes and Colombes, as far as tramway T2.

By connecting with tramway T2, the T1 extension project aims to facilitate peripheral travel in the Hauts-de-Seine département. It will reinforce the area’s public transport grid.

The project’s main objectives are to improve access to employment basins and local facilities, and to enhance mobility flows between communes.

Useful informations :

  1. Département 92
  2. Connections with the M13 / T2


  • A western arc for the T1
  • Connections with existing lines: M13, Transilien line J, numerous bus lines and the T2 (Bezons / Porte de Versailles).

Service quality

  • Regular, reliable tram service thanks to fully dedicated lanes for most of the route and priority at traffic lights.
  • Trams will run every 5 minutes during peak hours (phase 1), and then every 4 minutes during peak hours (phase 2).
  • Tramway stations and trams are accessible for persons with reduced mobility.
  • Trams will circulate daily, from 5:30 a.m. to 12:30 a.m., with extended hours on Friday and Saturday nights, to 1:30 a.m.
  • Real-time passenger information.

Urban integration

  • Keep pace with urban renewal projects.
  • Take into account the new polarities in the Greater Paris area, by linking together communes in the inner suburbs and by improving accessibility to the La Défense business district.

Key figures

extension. 12 new stations will be created as part of the project, which is expected to serve 60,000 passengers each day.


  • July 2011: approval of the Main Features and Objectives Document (DOCP) by the Île-de-France Mobilités board of directors
  • October-November 2011: prior consultation by Île-de-France Mobilités
  • Avril 2012: approval of the consultation report by the Île-de-France Mobilités board of directors
  • 2012-2013: preliminary studies
  • February 2014: approval of the project’s functional diagram and the public utility survey by the Île-de-France Mobilités board of directors
  • September-October 2014: public utility survey

Phase 1:

  • February 2015: approval of the project declaration by the Île-de-France Mobilités board of directors
  • July 2015: approval of the pre-project draft design studies by the Île-de-France Mobilités board of directors
  • 2014-2017: in-depth studies
  • 2017: start-up of tramway construction
  • Autumn 2019: start-up of service to Carrefour des Quatres Routes

Phase 2:

  • 2015-2017: in-depth studies
  • 2020: start-up of construction work
  • About 2023: start-up of service to Gabriel Péri
T1 Colombes

Project players

The Seine-Saint-Denis General Council

The Seine-Saint-Denis General Council is the contracting authority for the facilities necessary for realising the tramway extension.

Île-de-France Mobilités


Project costs and financing


The cost of the project is estimated at 225m € (January 2013 value). Reference: the project’s functional diagram. The cost of phase 1 is estimated at 34.42m € (January 2013 value).

Project funding

Rolling stock


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