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
Cycling in the Channel Tunnel Cycling in the Channel Tunnel Pedal cycles in the Channel Tunnel are normally allowed to cross the Channel Tunnel fixed link between the United Kingdom and France only by using the Eurotunnel cycle service, on board a Le Shuttle train. That consists of a minibus and bicycle trailer for six bicycles. On a number of special occasions since 1993, crossings have been made directly using the bidirectional Channel Tunnel service tunnel, positioned between the two rail tunnel bores. The central service tunnel has airlocks at both ends and a concrete screed road surface. During construction, over 200 bicycles were used