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
Channel Tunnel over its predicted budget. Since its construction, the tunnel has faced a few mechanical problems. Both fires and cold weather have temporarily disrupted its operation. People have attempted to use the tunnel to enter the UK illegally since 1997, creating the ongoing issue of the migrants around Calais on the French side, causing both diplomatic disagreement and violence. In 1802, Albert Mathieu-Favier, a French mining engineer, put forward a proposal to tunnel under the English Channel, with illumination from oil lamps, horse-drawn coaches, and an artificial island positioned mid-Channel for changing horses. Mathieu-Favier's design envisaged a bored two-level tunnel with