The general objective of the project is to promote sustainable urban mobility by creating an efficient, ecological and modern public transport system in the municipalities of the county residence, namely the municipality of Alba Iulia (PP1), the municipality of Buzău (PP 2), the municipality of Constanta (PP3) and the municipality of Ploiești (PP4), leading to the reduction of CO2 and pollutant emissions discharged into the atmosphere, the reduction of the number of cars in traffic, the increase in the number of people using public transport with an impact on the fluidisation of road traffic. This objective involves reducing carbon emissions and increasing the attractiveness of public transport by providing superior conditions (modern low floor vehicles, 100 % zero-emission electric vehicles, faster, less noisy, with ITS facilities – intelligent technical systems), i.e. by offering transport alternatives, discouraging travel by car and increasing the number of people who will use public transport. The project contributes to reducing greenhouse gas emissions in two ways: • replacing old diesel buses with 100 % zero-emission electric buses virtually eliminates GHG emissions on those routes; • by providing superior conditions (modern, low-floor, faster, less noisy, ITS-facilitated vehicles) through new vehicles, as well as the complementary improvements brought by cities through other projects funded by the 2014-2020 ROP, more inhabitants of these cities will use public transport and some of them will have abandoned private transport.