Cologne Bus Network (KVB) · Relations URL: https://knowledge.ivjn.us/en/concepts/busnetz-koeln/relation.html The Kölner Verkehrs-Betriebe (KVB) operate around 60 bus lines on a route network of approx. 735 km, whose city lines carry the numbers 1xx and complement the light rail network. Page 1 / 0, 0 total