RER line A summer works on the RATP network!

RATP launched a poster campaign on March 7th, devoted to RER line A summer works, to inform…


Summer closures on RER lines A and C: ask for the guide!

From March 12th to March 23rd, our staff is mobilised to give you the best information…

agents en station

Multimedia library

Find out more about the RER A summer construction project.


Track replacement: how does it work?

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

FAQ RER A Summer Work

FAQ RER A Summer Work

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

What is the construction work for?

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…

2015 – 2021: Line closure calendar

2015 – 2021: Line closure calendar

To conduct the track and ballast…

RER A entre deux stations

Genesis of the project

Construction work of the RER A line.

Gérard Rollando

Portrait of the RER A

First known as the Regional Metro when inaugurated in 1969, the RER A is a major transport axis for the Ile-de-France region. It forms a…