The A1 motorway (Slovene: avtocesta A1), also known as Slovenika, is 245.3 km (152.4 mi) long, connecting Šentilj (at the Austrian border) and Koper/Capodistria (on the shores of the Adriatic Sea).

It connects several of the largest metropolitan areas of the country, including Maribor, Celje and Ljubljana, all the way to the Slovenian Littoral and port town of Koper.

Construction began in 1970 and the first section was finished in 1972, connecting Vrhnika and Postojna.

On the other hand, it also connected all those cities with Slovenian coast and provided better conditions for transit to Port of Koper.

There are six toll stations for heavier vehicles Pesnica, Tepanje, Vransko, Kompolje, Log and Videž.