Vienna–St. Pölten The new Vienna–St. Pölten section of the New Western Railway is a high-speed railway. It runs from Vienna via
Tullnerfeld to St. Pölten and is part of the
TEN project No. 17 "
Magistrale for Europe". The section was put into scheduled operation on 9 December 2012. The travel time without stopping between
Vienna West station and
St. Pölten was reduced as a result from 41 to 25 minutes. The new section of the New Western Railway begins at the exit of
Wien Meidling station and runs through the
Lainz Tunnel, which leads directly to Hadersdorf junction. Up to that point the traditional link to and from the Old Western Railway can be operated at . The start of the high-speed line at the entrance of the
Vienna Woods Tunnel is west of Hadersdorf junction. From this point, the line can be run at up to . The line resurfaces after 13 km at Chorherrn near to the
Tulln Basin. The regional
station of Tullnerfeld is situated in the
Tulln Basin. The high-speed line has been connected to the Franz Josef Railway by the reactivation of disused
Tulln western curve, promoting regional traffic. After passing through three
cut-and-cover tunnels that were built for noise abatement reasons in an open cutting, the line runs through three more tunnels, known as the Perschling tunnel chain (
Tunnelkette Perschling). The line then runs to Wagram junction in St. Pölten, which now forms the end of the new Western line. Simultaneously with the construction of the new high-speed line, the railway stations in Vienna and St. Pölten are being rebuilt.
Vienna Hauptbahnhof was opened on 9 December 2012 for partial operations and was fully completed in 2015. St. Pölten station was rebuilt at the end of 2011.
Rohr junction‒Ybbs an der Donau Immediately following St. Pölten station runs through a right-hand bend, which can be run at up to 80 km/h, a short straight section and a left-hand curve through the 460 metres-long Eisbergbogen Tunnel, which was newly built in 2010/11 and which can be run through at 160 km/h. At the end of the curve,
Linienzugbeeinflussung (LZB) signalling starts, allowing operations at 200 km/h. The line here has three tracks (including the congestion track between St. Pölten Hbf and Prinzersdorf south of the two-track main line, with its own tube through the Eisbergbogen Tunnel) to Prinzersdorf, then two tracks through the Markersdorf an der Pielach station to Rohr junction, where it fans from two to four tracks. Here the Old Western Railway branches to the northwest to
Loosdorf station, while the New Western Railway runs to the south of the town through a “green” tunnel. To the northwest of Loosdorf the two lines come within a few metres of each other before the new line takes a slight curve to the left to the entrance of the Wachberg 2 Tunnel. Shortly after its western portal it runs through the Melk Tunnel, which takes its name from the nearby
town. Immediately afterwards it runs over a bridge over a small river before turning to run parallel with the old line, which has been rebuilt on the new alignment. Now, the two parallel lines run through Pöchlarn station until the new line takes a slight curve to the left to enter the almost 5 km long Sittenberg Tunnel. Shortly after the western portal the new and old lines come together again and, about 2 km later, reach
Ybbs an der Donau station, where the maximum speed is cut to 160 km/h. The two-track line section between Ybbs and
Amstetten is expected to be rebuilt as four tracks by 2016.
Amstetten–Linz Kleinmünchen From Amstetten station, the Western Railway runs as four tracks again and with the recommencement of LZB long-distance traffic can accelerate to 200 km/h after the sharp left turn at the western exit to the station, which restricts speeds to 160 km/h. The Old and New Western Railways run parallel as far as St. Peter-Seitenstetten, before the new line makes a tighter curve than the existing route through the St. Peter “green” tunnel. At St. Johann-Weistrach the two lines run for a few hundred meters next to each other again. After the station, the Old Western Railway runs towards
Haag, while the New Western Railway takes a right turn to a straight section and then runs to the north through the 6.5 km long Sieberg Tunnel. At the northern portal, the two lines meet and again run parallel to each other to
St. Valentin station. After the station, the new line enters the “Enns bypass”, which can be operated at , running around the area of the port and the settled areas of Enns. (In 2005, in the course of the upgrade to four tracks between Ennsdorf and Enns, a junction was built towards
Mauthausen, allowing direct operations of trains from Linz towards the
Danube Bank Railway). Near Asten, the Old and New Western Railways come together again. From Asten-Fisching 1 junction the speed limit is reduced to on the two parallel lines to Linz Kleinmünchen, the current end of the four-track section on the Western Railway.
Signalling The New Western Railway has been equipped with the
European Train Control System (ETCS) on the newly built section of the line from Vienna to Wagram junction. The so-called “registration” (
Anmelde) line starts at the entrance to Lainz Tunnel, which is equipped with both ETCS and with the old
Punktförmige Zugbeeinflussung (PZB) system. From Hadersdorf junction it was originally intended that the line be exclusively signalled with 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==