transports ferroviaires – Axe ferroviaire Rang-du-Fliers - Boulogne-sur-Mer

This written question concerns the railway line connecting Rang-du-Fliers and Boulogne-sur-Mer in France. It seeks information on the current state and future plans for this specific rail axis. The question is posed to the relevant government minister, likely regarding infrastructure, services, or potential upgrades affecting passengers and freight in the region.