The D1 motorway connects Bratislava to Trnava, Nitra, Trenčín, Žilina and beyond, while the D2 motorway connects it to Prague, Brno and Budapest in the north–south direction. A large part of D4 motorway (an outer bypass), which should ease the pressure on Bratislava's highway system, is scheduled to open in 2020. The A6 motorway to Vienna connects Slovakia directly to the Austrian motorway system and was opened on 19 November 2007.