In the last two years GTT has purchased 191 vehicles, 144 of which for urban and suburban service, and has renewed about 20% of the bus fleet. Thanks to the replacement of older vehicles, the average age of the GTT fleet is less than 11 years (which is a good figure compared to the Italian average age of 12 years). The investments on buses join those on trams (with 30 new vehicles expected by 2021).