A plan to implement a Regional Express Network (RER) was examined and approved in December by the Regional Council of Nouvelle Aquitaine.

The project will see the deployment of a new commuter train system by 2028.

This new type of transport will significantly reduce travel times for residents across Gironde, and also will aim to decongest the major accesses into Bordeaux and surrounding areas.

The future Regional Express Network will consist of TER metropolitan and express bus lines. It will serve the main access points laying on the outskirts of the region, as well as the center of the city. This will be carried out with the implementation of two lines: one between Libourne and Arcachon, the other between Saint Mariens and Langon.

By the autumn of 2019, the Region will launch a first experimental express bus line between Créon and Bordeaux. From 2020 onwards, the first direct TER services between Libourne and Cestas will follow. The Region also intends to increase the frequency of peri-urban TERs.

However, it will be necessary to wait until 2025 for the direct links to be established between Libourne and Arcachon. Following another lengthy wait (2028) for the services between Langon and Saint-Mariens to be active.