Solutions supplied by Siemens are helping to improve traffic conditions at the Coentunnel, one of the most heavily used traffic arteries in the Netherlands, used by 100,000 vehicles every day. The tunnel, which links Amsterdam to the province of North Holland, has been a cause of traffic congestion and delays for many years. A much-needed second tunnel opened in spring 2013, together with a three kilometre long elevated section of freeway connecting the tunnel with the southern part of the city to relieve t