In 1901 the major railways were nationalised to form Swiss Federal Railways. During the first half of the twentieth century they were electrified and slowly upgraded. After the Second World War rail rapidly lost its share of the rail market to road transport as car ownership rose and more roads were built. From 1970 the Federal Government has become more involved in upgrading the railways, especially in urban areas and on trunk routes under the Rail 2000 project. In addition, two major trans-alpine routes—the Gotthard Railway and the Lötschberg approach to the Simplon Tunnel—are being rebuilt under the NRLA project.