Autostrada SistianaâÂÂRabuiese is an autostrada (Italian for "motorway") long without toll, managed by ANAS consisting of two sections connected to each other by the which connects the Raccordo autostradale RA13 in Italy and the in Slovenia crossing the Italian city of Trieste in Friuli-Venezia Giulia region. The highway does not have a definitive numbering and is therefore devoid of an alphanumeric abbreviation of the type "Ax" or "Axx".