Effect of driving conditions and structure of built-up areas on average levels of air pollution in urban roads

Abstract

Emissions of air pollutants generated by motor traffic in urban areas largely depend on the local driving conditions. In conjunction with a traffic flow model, spatial distribution of emissions at signalized intersections and road sections can be estimated. The effects of buildings on the dispersion have been studied with the aid of scale models in a wind tunnel. The results have been corporated in a long-term dispersion model. When applied together with a model for the spatial distribution of emission rates, the effects of traffic engineering measures on air quality in streets can be evaluated.