Your interactive map

To help you anticipate summer construction work on the RER A and C, RATP proposes an interactive map. 

Multimedia library

Find out more about the RER A summer construction project.

FAQ RER A Summer Work

Answers to frequently asked questions about RER A Summer work can be found in this section.


Key players

The Ile-de-France region’s key public transport players have joined forces around the RER A track replacement project.

Our alternative solutions for this summer

RATP and its partners offer you the possibility to test several alternative routes this summer, during the closure of RER A line between…

A tailor-made scheme for people with reduced mobility

People with reduced mobility will not be forgotten in the passenger accompaniment arrangements that will be set up this summer by RATP…

To better understand the 2017 summer closure

This summer, the RER A track replacement work will lead to a total closure of the RER A line between La Défense and Nation from July 29…

What is the construction work for?

The tracks of the RER A, which has been operating for more than 40 years, incur heavy use, since they now carry more than 300 million…

Track replacement: how does it work?

By 2021, the renovation project will allow 24 kilometres of ballasted track to be entirely replaced, all of which is underground,…