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 cycle the 100-kilometre round-trip from Folkestone to Coquelles and back again. The journey took around five hours to complete, while wearing full overalls and needing to carry respirators. In November 1993, journalists Nick Dutton-Taylor and Damon Brown used the same Saracen bicycles as other construction workers to cycle into the tunnel for an article in "Mountain Biking UK". They were trained and accompanied by the cycling trainer Clive, but not allowed to go the full way through. On the night of 2/3 December 1994, a group of professional and semi-professional cyclists went road bicycle racing from London to Paris in