Lausanne station will be the centrepiece of this project. From 2021, SBB will lengthen its platforms to 420 metres and build additional underpasses for improved access. This will facilitate the use of 400 metre long trains with 1,050 seats. The Lausanne-Geneva route will be serviced on four tracks at 15-minute intervals. At the same time, a cross-border commuter train will be introduced in western Switzerland. The new, double-track CEVA line will have a length of 16 km, will run largely underground and connect Genève-Cornavin, Eaux-Vives and Annemasse (France). The new line will connect existing rail networks in Switzerland and France, thus underlining the cross-border provision of the Léman Express. Its final commissioning is set for December 2019.