A look at traffic controls in West Germany and their autobahns and how Britain can learn as they build miles of new motorway including the new Hammersmith Flyover. A look at traffic controls in West Germany and their autobahns and how Britain can learn as they build miles of new motorway including the new Hammersmith Flyover. A look at traffic controls in West Germany and their autobahns and how Britain can learn as they build miles of new motorway including the new Hammersmith Flyover. A look at traffic controls in West Germany and their autobahns and how Britain can learn as they build miles of new motorway including the new Hammersmith Flyover.