The 7km subsea Oslofjord Tunnel in Norway will be closed for up to three weeks after a truck caught fire in the tunnel on May 5. Norwegian media report that a 500m stretch was damaged - tunnel vault, cables, insulation and road surface. The tunnel is equipped with 25 evacuation rooms that can be sealed off from the main tunnel. Each room can provide pressurised space for up to 50 people while a fire is being fought. However, the latest incident has spurred the government to announce that a second tube will