Wiener Linien awards rolling stock contract to Siemens; commissions Knorr-Bremse to modernise 78 trains, Austria September 14, 2017 | Europe Company News Siemens has secured a contract from Wiener Linien, the public transport operator in Vienna, to supply and maintain 34 driverless metro trains. The contract includes an option to supply 11 additional t... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password