Vehicular traffic present one of the most t important sources of noises and environmental pollution in urban centres. The concentration values of main atmospheric pollutants (COx, NOx, SOx, O3, HC, PM) strongly depend on atmospheric conditions and traffic flow features (composition, mean speed, utilized fuels, driving conduct, etc.). This information about traffic except engine data, can be obtained from acoustical data, by considering the time behaviour of Leq and a suitable set of statistical noise levels Ln (as defined in ISO 1996). In this paper we analyse results of a noise and atmospheric pollutants concentrations levels measurement campaign carried out in a typical urban centre. The pollutants concentration and climatological data have been compared to the acoustics indicator values measured in the same overall environmental and traffic conditions, in order to put in evidence the influence of the above traffic features on pollutants concentration levels. For a better phenomenological understanding, an innovative “noise-like” statistical approach has been developed, by introducing opportunely modified statistical levels of concentration.
AN INNOVATIVE STUDY OF NOISE AND ATMOSPHERIC POLLUTION EMISSION BY URBAN VEHICULAR TRAFFIC
SABATO, Adolfo
2004-01-01
Abstract
Vehicular traffic present one of the most t important sources of noises and environmental pollution in urban centres. The concentration values of main atmospheric pollutants (COx, NOx, SOx, O3, HC, PM) strongly depend on atmospheric conditions and traffic flow features (composition, mean speed, utilized fuels, driving conduct, etc.). This information about traffic except engine data, can be obtained from acoustical data, by considering the time behaviour of Leq and a suitable set of statistical noise levels Ln (as defined in ISO 1996). In this paper we analyse results of a noise and atmospheric pollutants concentrations levels measurement campaign carried out in a typical urban centre. The pollutants concentration and climatological data have been compared to the acoustics indicator values measured in the same overall environmental and traffic conditions, in order to put in evidence the influence of the above traffic features on pollutants concentration levels. For a better phenomenological understanding, an innovative “noise-like” statistical approach has been developed, by introducing opportunely modified statistical levels of concentration.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
