VBK - Verkehrsbetriebe Karlsruhe is the municipal transport company responsible for public local transport in Karlsruhe, Germany. It operates an extensive network of tram and bus lines, along with the Turmbergbahn funicular railway, serving around 70 million passengers annually. The company is a key part of the "Karlsruhe Model," an integrated public transport system developed in cooperation with Albtal-Verkehrs-Gesellschaft (AVG) and Karlsruher Verkehrsverbund (KVV), focusing on sustainable and efficient mobility.