Lausanne–Renens: construction work on the fourth track.

The construction of a fourth track between Lausanne and Renens will improve the flow of traffic through the densest region of Western Switzerland. 

We would like to warn you, as a resident affected by this construction work, about occasional disruptions by giving you regular updates. You can read our calendar and our news updates to find out about upcoming work. 


  • 2015 – planning permission
  • 2016 – start of construction
  • December 2021 – start of operations

Engineering work updates.

We are currently carrying out the following work:

In the previous phase, two new tracks were laid between Prilly-Malley and the bridge on avenue Marc-Dufour (entrance to Lausanne station). The next phase of work, which will run from February to July 2020, will involve connecting the new tracks to the existing tracks at the entrance to Lausanne station. 

Work is scheduled during the day, at night and at weekends. We will inform you of noise in advance by means of a letter in the post. From 20 April 2020, trains will run on the new track located at the southernmost section between Lausanne and Prilly-Malley.


From Lausanne rail station (Marc Dufour bridge) to the train stop at Prilly-Malley


February to July 2020