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Transportaiton Related Air Pollution: Near-Road Dispersion

Authors: Siliang Cui*, University of Toronto, Matthew Adams, University of Toronto
Topics: Transportation Geography, Geographic Information Science and Systems, Environmental Science
Keywords: transportaiton related air pollution,near-road dispersion, urban air pollution, noise barrier and roadside vegetation barrier, near-road environment, spatial analysis
Session Type: Paper
Presentation File: No File Uploaded


One of the aspects of transportation-related air pollution is its dispersion adjacent to freeways, since twenty-eight percent of the Ontario population is living near major roads. My study identifies how roadside structures affect ambient air pollution concentrations in these areas. There are two objectives of my research. The first one is to determine the influence of roadside structures on local NOx, O3, and PM including trace metal speciation, as well as noise levels. The second one is to quantify the effectiveness of different types of roadside structures on air pollutants and noise reduction in areas near freeways.
This study will be conducted in Ontario along major freeways. I will identify sections with similar vehicles counts on one of the highways. I will gather detailed and quantitative measurements of roadside structures and make a schematic 3-D plot of the study area. I will measure NOx, O­3, and PM including trace metal speciation as well as noise levels on the road, and compare these values with the passive measurements taken at various distances from the freeway on both sides of any existing barriers. From this data, air pollution maps will be created, which will identify significant changes in pollutants and noise gradients by various barriers. Using spatial analysis, I will generate air pollution dispersion models and examine the spatial patterns of dispersion across different barriers. The result of my study will help urban planners, engineers, and scientists explore feasible and cost-effective roadside structures to reduce noise and pollution dispersion near freeways.

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