The impact of traffic dynamic and wind angle on vehicular emission dispersion

This paper presents a first-order macroscopic traffic simulation on a road lane in the presence of traffic light. The traffic results are used to calculate the induced pollution. The dispersion of emissions is calculated under a moderate wind flow using a Gaussian plume model. The results show that neglecting the traffic heterogeneity leads to the underestimation of the pollution levels. Such a phenomenon is amplified near the road for high wind angles.

► We simulate the traffic on a single lane road in presence of traffic light.
► The traffic results are used to estimate the dispersion of the emitted pollution.
► We investigate the effect of the traffic dynamic and wind angle on the pollution.
► The traffic heterogeneity has a dominant effect on the pollution distribution.
► Parallel wind direction tends to amplify the pollution heterogeneity near the road.