ETCS level 2, but it was decided to have PZB as a fallback. It is possible to run from St. Pölten to Attnang-Puchheim at 230 km/h using LZB signalling. Importance and development of the line The Western Railway, along with the Southern Railway, are the main arteries of the Austrian railways. With EU enlargement, their importance continues to grow. Not only is a large part of the Austrian National rail traffic on the western railway line, but long-distance services between Vienna and cities such as Hamburg, Dortmund, Cologne, Frankfurt, Munich and Zurich also run on the Western Railway. The Western Railway is an important section of the TEN line between Paris and Bratislava and Budapest. In the long term there are expected to be direct services on these routes with modern high-speed train sets. Upgrade to 2010 Since 1990 the capacity of the line has been increased by the creation of a high-speed line. The existing two-track line is being upgraded to provide high capacity and in addition a new double track line is being built between St. Pölten and Linz, together creating a four-track line. The new sections are designed with many new tunnels and straight sections of track to allow speeds of up to 250 km/h. This upgraded condition of the line has allowed ICE T services to run from Vienna to Frankfurt, Munich and Bregenz since the timetable change in 2006 in Austria and Railjet services to run between Budapest, Vienna, Munich and Zurich since the timetable change in December 2008. Upgrade to 2014 The travel time from Vienna to Innsbruck was four and half hours before the timetable change on 9 December 2012; at the timetable change the duration was reduced to four hours and 15 minutes. The upgrading of the line is aimed at achieving the so-called "1-2-3-scheme", that is the journey from Vienna to Linz will be only an hour, Salzburg would be two hours away and Munich and Innsbruck would be three hours from Vienna. On 9 December 2012, two new sections were opened: the new Vienna–St. Pölten section (journey time reduction ≈ 15 min) and the New Lower Inn Valley railway from Radfeld to Baumkirchen (journey time reduction ≈ 5 min). These sections are operated at 230 or 220 km/h. Here, the winding and mountainous section of track through the Vienna Woods was supplemented with a new route through Tullnerfeld (Vienna Woods