Stranded passengers line up in front of an improvised information desk at Cologne's main railway station during a two-hour warning strike of train drivers of the GDL trade union (Gewerkschaft Deutscher Lokomotivfuehrer) February 22, 2011. German train drivers staged country-wide warning strikes on Tuesday morning in a dispute over pay, disrupting rail transport in Europe's largest economy at peak commuting time. Weselsky said national rail operator Deutsche Bahn and six regional train operators had had sufficient time to present an acceptable wage contract deal, but had failed to come up with the goods. REUTERS/Wolfgang Rattay (GERMANY)