The new type of underground freight infrastructure will be complementary to the Swiss road and rail network, and relieve it at critical points. The first scheduled section of about in the central
Swiss Plateau (
Mittelland) will connect
Härkingen/
Niederbipp and the city of Zürich from the early 2030s. Later, a comprehensive network is planned between the
Bodensee in eastern Switzerland and
Lake Geneva in western Switzerland, with offshoots to Basel and Luzern. The tunnels will be built at a depth of up to and have a diameter of . In these tubes, three tracks will be placed, one in each direction plus a service lane in the middle, operating fully automated and unmanned vehicles which can transport two
EUR-pallets and
containers. Via ramps or lifts, these small vehicles, powered by
electromagnetic induction, will load and unload automatically. The initiators believe that the vehicles will be able to travel round the clock and round the year at a speed of . An additional monorail system for packages, suspended in the crown of the tunnel, may run at twice that speed. The main shareholders Migros, Coop, Swisscom, Swiss Post,
Credit Suisse,
Zürcher Kantonalbank, Mobiliar and
Helvetia as well as the foreign partner
Meridiam from
France will contribute 100 million Swiss francs; the Swiss federal authorities have to ensure the legal framework for the project, the Executive Board announced at a media conference on 23 January 2018. Originally Dagong Global Investment Group from
China was one of the foreign partners as well. However, in 2020 CST distanced themselves from investments from China. == Costs (first phase) ==