Azienda Trasporti Pubblici (ATP) is a consortium including the Municipality of Sassari, the Province of Sassari and the Municipality of Porto Torres. It manages all bus routes within the territory of Sassari and Porto Torres.

ATP was officially founded on Jan 16, 1972 taking the lead of the public bus services, that, until then, had been managed by “Pani”, the historical bus company founded on Sept 27, 1952.

The Consortium, governed by its Articles of Incorporation, is a publicly owned corporation, fully independent from its member institutions.