The Trans Europ Express, or Trans-Europe Express (TEE), was an international first-class railway service in western and central Europe that was founded in 1957 and ceased in 1995. At the height of its operations, in 1974, the TEE network comprised 45 trains, connecting 130 different cities, from Spain in the west to Austria in the east, and from Denmark to Southern Italy. Origin The first services commenced on 2 June 1957 following an idea of F.Q. den Hollander, then president-director of the Dutch national railway company (NS). TEE was a network jointly operated by the railways of West Germany (DB), France (SNCF), Switzerland (SBB-CFF-FFS), Italy (FS) and the Netherlands. Although some trains passed through Belgium from the beginning, the Belgian national railway company (NMBS/SNCB) joined the program only in 1964. Luxembourg (CFL) also joined at a later date. The idea was for a network of fast and comfortable transnational trains that would be attractive to businessmen and other regular travellers. All trains were first-class-only and required payment of a special supplement over the normal first-class ticket price, the amount of which depended on the distance covered. Where possible, TEE trains' schedules were timed to allow a business traveller to make a round trip (return journey) within a single day and also have time for business activity at the destination. Each train was named, and all were expresses, stopping only at major cities. Some of the named trains had already existed for some years before creation of the TEE network and were simply newly designated as Trans-Europe Expresses in 1957 or later. For example, the Settebello had been in operation since 1953 and the Rheingold since 1951 (as a revival of a pre-World War II train). The network was launched in 1957 with trains serving 13 different routes. Rolling stock Initially, the system was a completely diesel network. Because of the many different kinds of electrical specifications (voltages and current types – alternating current and direct current) used in the different countries it was thought at that time that use of diesel-hauled trains or diesel multiple-unit trainsets would greatly speed up border crossing. Moreover, at that time many border crossing sections were not yet electrified. The German DB built the streamlined DB Class VT 11.5, while the Swiss Federal Railways (SBB) and the Dutch NS developed the RAm / DE, both diesel trains. However, the creation of the international TEE network