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<p>Traffic emissions are a dominant source of urban air pollution, and pedestrians are consistently exposed to higher pollutant concentrations at roadside locations. The current study attempts to assess exposure to traffic related air pollution by monitoring pollutant concentration at breathable heights of adults and children under mixed-traffic conditions in Warangal city, India. For this purpose, monitoring studies were carried out at various traffic intersections to estimate the concentrations of PM2.5, PM10, CO, and NO<sub>2</sub>. Investigating the determinants of pollutants are analyzed through regressions analysis considering the site-specific traffic composition and meteorological parameters. The results from this analysis identified that in Indian traffic scenario, Auto-rickshaw and Heavy Commercial Vehicle (HCV) as the significant contributor to PM, NO<sub>2</sub> and CO concentrations at intersections. Meteorological factors have a substantial effect on the concentration of NO<sub>2</sub>, amongst other pollutants. Moreover, a significant difference in pollution levels for all pollutants exists at both heights, with children getting exposed to as much as 50% higher concentration levels of coarse particulate matter and CO in comparison to adults. The findings of this study are anticipated to provide valuable insights enabling urban transport planners in developing strategies to reduce pedestrian exposure to traffic emissions.</p>

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Comparative assessment of pollutant concentrations at adults and children breathing height at urban intersections under mixed traffic flow

  • 期刊论文

  • 发表日期：

    2026年7月14日

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  • Chowdary Rohith,
  • Mukul Chauhan,
  • Raghuram Kadali

摘要

Traffic emissions are a dominant source of urban air pollution, and pedestrians are consistently exposed to higher pollutant concentrations at roadside locations. The current study attempts to assess exposure to traffic related air pollution by monitoring pollutant concentration at breathable heights of adults and children under mixed-traffic conditions in Warangal city, India. For this purpose, monitoring studies were carried out at various traffic intersections to estimate the concentrations of PM2.5, PM10, CO, and NO2. Investigating the determinants of pollutants are analyzed through regressions analysis considering the site-specific traffic composition and meteorological parameters. The results from this analysis identified that in Indian traffic scenario, Auto-rickshaw and Heavy Commercial Vehicle (HCV) as the significant contributor to PM, NO2 and CO concentrations at intersections. Meteorological factors have a substantial effect on the concentration of NO2, amongst other pollutants. Moreover, a significant difference in pollution levels for all pollutants exists at both heights, with children getting exposed to as much as 50% higher concentration levels of coarse particulate matter and CO in comparison to adults. The findings of this study are anticipated to provide valuable insights enabling urban transport planners in developing strategies to reduce pedestrian exposure to traffic emissions.