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
Channel Tunnel forecasts were over-predictions. Although the captured share of Channel crossings was forecast correctly, high competition (especially from budget airlines which expanded rapidly in the 1990s and 2000s) and reduced tariffs led to low revenue. Overall cross-Channel traffic was overestimated. With the EU's liberalisation of international rail services, the tunnel and High Speed 1 have been open to competition since 2010. There have been a number of operators interested in running trains through the tunnel and along High Speed 1 to London. In June 2013, after several years, DB obtained a licence to operate Frankfurt – London trains, not expected to