Baubeginn des zweiten S-Bahn-Stammstreckentunnels durch die Münchner Innenstadt zur Inbetriebnahme der Express-S-Bahn

This question concerns the start of construction for the second S-Bahn main line tunnel in Munich's city center. It aims to facilitate the operation of an express S-Bahn service. The question likely seeks information on the project's timeline, impact on residents and businesses, and potential disruptions during construction.