Automation and the extension of line 4 on the rails
The second busiest line of the metropolitan network, line 4 is on its way to becoming the third automatic line of the network. The first automation work began this year, with the raising of the platforms of the first stations (Etienne Marcel, Gare de l'Est, Saint-Germain-des-Prés, Mouton-Duvernet and Raspail). In parallel with this work, the installation of platform facades on all the stations of the line will be organised from mid-2017 to the end of 2018. The first automatic shuttles will run from 2021 and will gradually replace the old trains with drivers until 2022.