Channel Tunnel terms of the Concession, Eurotunnel was obliged to investigate a cross-Channel road tunnel. In December 1999 road and rail tunnel proposals were presented to the British and French governments, but it was stressed that there was not enough demand for a second tunnel. A three-way treaty between the United Kingdom, France and Belgium governs border controls, with the establishment of "control zones" wherein the officers of the other nation may exercise limited customs and law enforcement powers. For most purposes these are at either end of the tunnel, with the French border controls on the UK side of the tunnel
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