Supply of 20 natural gas buses in Cologne, Germany January 18, 2019 | Europe Tenders Country: Germany Organisation: Regionalverkehr Köln GmbH Description: Bids are invited to supply 20 buses fuelled by natural gas in two lots. Lot 1 includes the supply of 19 buses and lot 2 inc... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password