ARST Sp A., ya kasan ce wanda aka fi sani da Azienda Regionale Sarda Trasporti, kamfani ne na jama'a da ke da alhakin jigilar jama'a a Sardinia, a cikin Italiya, mallakar yankin yankin mai cin gashin kansa na Sardinia. Kamfanin yana da hedkwata a Cagliari kuma yana da ma'aikata 2,166. Yana aiki da babban ɓangaren layin bas na tsibiri a tsibirin (yana da layukan bas 175 da cibiyar sadarwar 13,500 km a 2007), layin bas na birane a cikin gundumomi shida (Alghero, Carbonia, Iglesias, Macomer, Guspini da Oristano), masu jigilar fasinja da zirga-zirgar jiragen ƙasa a kan 169 kilomita na ƙananan hanyoyin layin dogo da kan manyan hanyoyin jirgin ruwa biyu da ke aiki a Sassari da Cagliari . ARST yana aiki kuma 438 kilomita na ƙananan hanyoyin jirgin ƙasa, bisa layuka 4, waɗanda aka yi amfani da su azaman sabis na yawon buɗe ido, wanda ake kira Trenino Verde . Cagliari Metrotramway Sassari Metrotramway Intercity Bus a cikin Sassari Motar Intercity a cikin Cagliari Motar Intercity a cikin Aggius Bus na Birni a Alghero Motocin ƙananan birane a Carbonia Ades Train a Sassari Tashar Olmedo http://arst.sardegna.it/orari_e_autolinee/guspini.html