Japan–Korea Undersea Tunnel at about ₩100 trillion (approx. US$90 billion), which would produce an extremely low benefit-to-cost result. In 2014, the South Korean Busan Development Institute estimated the undersea tunnel could create ₩54 trillion won (원54T, or US$53 billion) in economic benefits and provide about 45,000 jobs. In an April 2009 editorial, former Justice Ministers Daizō Nozawa of Japan and Kim Ki Chun of South Korea remarked on some of the similarities of the proposed Japan–Korea tunnel to the world's present longest undersea tunnel. The Channel Tunnel runs for 50.45 km linking the United Kingdom and France, and opened in May 1994: At
Channel Tunnel of opening because of drivers' difficulty setting their radios to the correct frequency (88.8 MHz). Power is delivered to the locomotives via an overhead line (catenary) at . All tunnel services run on electricity, shared equally from English and French sources. There are two sub-stations fed at 400 kV at each terminal, but in an emergency the tunnel's lighting (about 20,000 light fittings) and plant can be powered solely from either England or France. The traditional railway south of London uses a 750 V DC third rail to deliver electricity, but since the opening of High Speed 1 there is