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Invisible at the curb: New 3D model maps reveal hidden ultrafine traffic particle hotspots

phys.org·National Taiwan University·28 days ago
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Journal of Hazardous Materials (2026). DOI: 10.1016/j.jhazmat.2026.141024"> Roadside ultrafine particle emissions create narrow, high-pollution zones and age-specific cancer risks. Mapping these hotspots highlights the need for targeted barriers and urban designs to protect vulnerable populations. Credit: Journal of Hazardous Materials (2026). DOI: 10.1016/j.jhazmat.2026.141024 A National Taiwan University study shows that traffic particles can create sharply localized exposure hotspots near busy roads, intersections and elevated corridors. The findings suggest that targeted street-level planning may better protect children and other vulnerable groups than citywide averages alone. People living, walking or studying near busy roads may experience very different pollution exposures even within the same neighborhood.…

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