elections of May 3, 2000, and four since the elections of May 31, 2010. Economy The economy of town is mainly focused on services and the advanced tertiary sector. It is the principal administrative centre of central and northern Sardinia. The main Sardinian banks (Banco di Sardegna and Banca di Sassari) have head office and presidency in the city. Several research centers are located in town: the University ones, the Center of Regional Weather Service (Meteo Sar.), the Regional Agency for Environmental Protection (ARPA), the Zooprophylaxis Institute of Sardinia, and many labs of the National Research Center (CNR): the Institute of Biometeorology (IBIMET), the Institute of Biomolecular Chemistry (ICB), the Institute of Ecosystem Studies (ISE), the Institute of Sciences of Food Production (ISPA), and the Institute for Animal Production System in Mediterranean Environment (ISPAAM). Manufacturing includes construction, pharmaceutical, food, typographic industry, and also, indirectly, petrochemical and the new greenchemicals located in Porto Torres. Tourism is concentrated mainly along the coasts. Platamona, Porto Ferro, Porto Palmas and Argentiera are the principal seaside tourist spots of the municipality. Average income in Sassari is 24,006 euros per person. Transportation The nearest airport, Fertilia International Airport, is from the city center, and the closest seaport is located at Porto Torres, away. Urban and suburban public transport is operated by about 25 bus lines of Azienda Trasporti Pubblici (ATP) and by a light rail transit of Azienda Regionale Sarda Trasporti (ARST). Two different railway companies connect the town to the rest of the island: Trenitalia links Sassari to Porto Torres, Oristano, Cagliari, Olbia, Golfo Aranci, and the ARST reaches Alghero, Sorso, Nulvi and Palau. Dual carriage motorways link Sassari to Porto Torres, Platamona, Cagliari (SS131), Olbia (SS199) and to Alghero (SS291). High-capacity traffic roads connect Sassari to Tempio Pausania (SS672) and Ittiri. Sport A.S.D. Torres Calcio football club, founded in 1903, playing in Serie C Torres Calcio Femminile women's football club, playing in Serie B, winners of seven national championships and eight national cups. Dinamo Basket Sassari, playing in Lega Basket Serie A HC Tangram 1 Sassari women's team handball club, playing in Serie A1 Yellow Team Sassari Baseball, playing in Serie C1 Sassari Baseball Softball Club, playing in serie C2 A.S.D. Rugby Sassari, playing in Serie C Consulates Twin towns – sister cities Sassari is twinned with: Gorizia, Italy, since 1983 Timișoara, Romania, since 1990 Gubbio, Italy, since 2002, between the Faradda and the