Anzob Tunnel Road. It is also a transit route between Dushanbe and Uzbekistan's capital Tashkent. Prior to construction of the tunnel, especially during winter, the threat of year-round avalanches led to periodic disruptions of commerce. The tunnel was officially opened in March 2006; it was built by the Iranian Sabir Co. Due to the significance of the tunnel, limited traffic flow was permitted via signing a waiver form noting potential hazards such as flooding and smog from construction equipment operating inside the tunnel prior to the final construction phase which may have included installation of ventilation and drainage infrastructure. As of May
2008 Channel Tunnel fire tunnel at Folkestone at 00:08 BST and a limited service provided with trains travelling in turn in alternating directions in the one tunnel. By the end of September, two thirds of the north tunnel had reopened. Full service resumed in February 2009 after repairs costing €60 million. This fire was the third to close the tunnel since it opened in 1994, the first being the 1996 Channel Tunnel fire and, in August 2006, the tunnel was closed for several hours after fire broke out on a truck loaded onto a HGV Shuttle. The fire was reported on 11 September 2008,