Resumen
Urban particulate matter exposure from road transport has already become a great issue in major cities. To study population exposure under different traffic conditions, number concentrations of particulate matter were measured at the center of road lanes, non-motorized lanes, pavement for pedestrians and residential area, respectively. In this paper, different categories of urban roads were chosen according to the traffic characteristics and road layout. The pollutant concentration data were collected by FLUKE 985 airborne particle counter on seven weekdays in August 2015, and the corresponding traffic volume, wind speed and direction, weather condition were also collected. There were no big differences between different types of urban roads for the number concentration, while the mass concentration generally increases with the level of urban roads. The number concentration decreases gradually from the center of urban roads to residential area. The results can be applied to determine the population exposure.