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
High-speed rail in Europe of France was opened. For the first time, high-speed services over the Franco-German border were offered. SNCF operates the TGV service between Paris and Stuttgart via Strasbourg and a daily return journey from Paris to Frankfurt via Saarbrücken, while ICE trains operate the remaining Paris to Frankfurt. The construction of the Channel Tunnel, completed in 1994, provided the impetus for the first cross-border high-speed rail line. In 1993, the LGV Nord, which connects Paris to the Belgian border and the Channel Tunnel via Lille, was opened. Initial travel times through the tunnel from London to Paris and Brussels were about