 Initially, the operator was the "Compagnie générale des tramways suisses" (TS) of Geneva, a predecessor of today's Transports Publics Genevois (TPC).From 1901, the operator was "Städtische Strassenbahn Biel" / "Tramway de Bienne" (TrB), from which the present-day "Verkehrsbetriebe Biel" (VB) / "Transports publics biennois" (TPB) emerged.In the 1940s, the tramways were gradually replaced by the Biel/Bienne trolleybus system and motor buses, until the network's closure in 1948.