 The second carriageway of the Bosruckstunnel was opened on October 19, 2015.The Tunnelkette Klaus (8 km) and Gleinalmtunnel (8.3 km — the last sections with a single carriageway — were planned to receive a second carriageway in late 2018 and in 2019, respectively.The motorway south of the A2 interchange is a part of the Pan-European corridor Xa.