Analysis of Highway Exposure to Ultra Fine Particles

Shanjiang Zhu, Julian Marshall and David Levinson

No 99, Working Papers from University of Minnesota: Nexus Research Group

Abstract: Studies on on-road exposure to Ultra-fine Particles (UFP) are under-reported compared to UFP concentration studies in literature. This study investigates both individual and population exposure to ultra-fine particle in the Twin Cities metropolitan area, Minnesota, by combining an on-road UFP concentration model with people’s travel patterns derived from different traffic monitoring data sources. Spatial and temporal patterns of exposure to UFP among freeway users are revealed through analysis of loop-detector traffic data, while individual exposure is estimated based on GPS travel trajectories. A few hot spots near major freeway interchanges represents a majority of total exposure to UFP, and the exposure during workday morning and afternoon peak periods is the highest. Significant disparity in individual exposure to UFP among population is observed. In general, individual exposure to UFP follows a log-normal distribution. Findings from this paper could significantly inform future epidemiological studies in on-road exposure to UFP.

Keywords: commuting; air pollution; emissions; pollution intake; GPS; route choice; ultra fine particles. (search for similar items in EconPapers)
JEL-codes: I12 Q53 R41 R48 R53 (search for similar items in EconPapers)
Date: 2012
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Published in Transportation Research d

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http://hdl.handle.net/11299/182078 First version, 2012 (application/pdf)

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Persistent link: https://EconPapers.repec.org/RePEc:nex:wpaper:ufp-onroad

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