Reforming the fleet of public authorities

The negative environmental implications and the reduced ψlevel of social services in many urban areas have attracted significant attention over the last years. Sustainability and quality of life are evolving to demanding actions in urban areas and public authorities have started to buy cleaner, greener vehicles in order to reforming their fleets. This paper presents and analyses a case study of the Traffic Police Division of Attica transition to a new vehicle fleet. It aims to examine how they managed to decrease the inefficiencies of their transport services in terms of both operational and environmental costs by achieving reduced fuel consumption as well as Green House Gas (GHG) emissions. It focuses on the impact on the environment due to the fuel consumption of vehicle fleet by using proper performance indicators (such as l/100 km for fuel consumption, g/km for CO, g/km for CO 2 ). Overall, the performance of reforming the fleet of the Traffic Police Division of Attica is evaluated in terms of fuel consumption and GHG reductions following a proposed approach for estimating emissions.