Reducing air pollutants through road innovative intersections

Road pollutant emissions are correlated mainly to infrastructural capacity and to trafficintensity and typology. With the aim to improve road intersections performances in the last years wasdesigned many new geometric layouts, like “turbo roundabouts” and “flower roundabouts”. The mainobjective of this paper is carried out a comparative analysis between conventional and innovativeroundabouts in terms of CO, CO2, NO and PM2,5 vehicular emissions, evaluated by means ofCOPERT Software which is developed as a European tool for the calculation of emissions from theroad transport sector.