A one-way street sign is pictured next to construction site of the main terminal entrance to the Berlin-Brandenburg airport in Schoenefeld August 16, 2012. Berlin looks set to postpone the opening of its long-delayed new airport for a third time, shareholders in the project told Reuters on Tuesday, dealing another blow to a flagship project that has embarrassed the German capital. The airport will also be known as Willy Brandt Airport after West Germany's Cold War chancellor. REUTERS/Tobias Schwarz (GERMANY - Tags: POLITICS TRANSPORT TRAVEL)