Some considerations on particulate generated by traffic

In this paper, particulate emission trends are presented related to an Italian region and focused on the sector of traffic. Three different scenarios were assessed supposing different strategies for the vehicles fleet evolution. Results demonstrate that strategies for engine modernization (old vehicle substitution) should be a priority. To this concern, additional advantages would be related to the decrease of precursors of secondary particulate (in particular thanks to the introduction of Euro 6 vehicles).