transports ferroviaires – Avenir de la liaison transfrontalière Belfort-Bienne

This written question concerns the future of the cross-border railway line connecting Belfort in France and Bienne in Switzerland. It seeks information on the planned developments and potential improvements for this important international transport route. The question highlights the significance of cross-border rail infrastructure for regional connectivity and economic cooperation between France and Switzerland. It aims to understand the long-term vision for this specific line.