A number of mountain passes on important trade routes cross the range, like Wurzen (Koreno), Loibl (Ljubelj) or Seeberg (Jezero), which have been used since prehistory. Nowadays the Austrian Karawanken Autobahn (A11) runs from Villach to the Karavanke motorway tunnel, which traverses the Western Karawanks connecting it with the Slovenian A2 motorway at Jesenice. A parallel railway line crosses the range through the Karawanks railway tunnel.