Analysis of the traffic management policy measures adopted in the Central Business District of Palermo

his research analyses the effects on air quality produced by the traffic management measures adopted in the Central Business District of Palermo (i.e. park price, the closure to traffic of Maqueda Road, etc.). Weather data series, pollutant concentrations data series (1997-2003) and the traffic data collected in 2003 were analysed by using different regression statistical models, to appraise the effectiveness of the traffic management policies adopted by City Council, understanding also the cause/effect relationships among the pollutant concentrations (CO, NO2, O3, C6H6 and PM10) and the traffic flows variations over time