Buses are a reliable but time-consuming means of getting around the region because they tend to stop in every town. Trains are a better option in virtually every respect when you're headed to Pisa, Lucca, Arezzo, and other cities with good rail service. But for most smaller towns, buses are the only option. Be aware that making arrangements for bus travel, particularly for a non–Italian speaker, can be a test of patience.
CPT. This agency provides infrequent bus service between Volterra and Colle di Val d'Elsa, and also connects Volterra with the nearest train station in Saline. Pisa, Tuscany. 050/884111; www.pisa.cttnord.it.
SENA. The company provides a regular service between Siena and Rome, which takes approximately three hours. Tuscany. 0861/1991900; www.sena.it.
SITA. Via Santa Caterina da Siena 17/r, Florence, Tuscany. No phone; www.sitabus.it.
Tra-In. City buses run frequently within and around Siena, including the centro storico. Tickets cost €1.30 and must be bought in advance at tobacconists or newsstands. Routes are marked with signposts. Siena, Tuscany. 0577/204111; www.trainspa.it.