Regionalverkehr Bern-Solothurn RBS (Regional Transport Bern-Solothurn) is a Swiss public transport company. It operates train, tram, and bus lines between Bern, Solothurn and Worb. RBS was founded as the Bern-Worb-Bahn in 1898, which grew to RBS in 1984 through a series of mergers. 94% of its shares are owned by federal, cantonal and local authori...