Using Transit Vehicles as Probes to Monitor Community Air Quality and Exposure

Chavez, Mayra C; Williams, Evan; Cheu, Ruey Long; Li, Wen-Whai; University of Texas at El Paso. Department of Civil Engineering; Cornell University. Center for Transportation, Environment, and Community Health

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Using Transit Vehicles as Probes to Monitor Community Air Quality and Exposure

2021-06-30
By Chavez, Mayra C ; Williams, Evan ; Cheu, Ruey Long ; ...

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Creators:

Chavez, Mayra C ; Williams, Evan ; Cheu, Ruey Long ; Li, Wen-Whai

Chavez, Mayra C ; Williams, Evan ; Cheu, Ruey Long ; Li, Wen-Whai Less -
Corporate Creators:

University of Texas at El Paso. Department of Civil Engineering ; Cornell University. Center for Transportation, Environment, and Community Health

University of Texas at El Paso. Department of Civil Engineering ; Cornell University. Center for Transportation, Environment, and Community Health Less -
Corporate Contributors:

United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology

United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology Less -
Subject/TRT Terms:

[+]

Air Modeling Air Monitoring Air Quality Concentration (Chemistry) Data Collection Exhaust Gases O3 PM2.5 PM10 NO2 Pollutants Probe Vehicles Public Transit Traffic Emissions
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

10/01/2019 - 06/30/2021
Corporate Publisher:

Cornell University. Center for Transportation, Environment, and Community Health. (CTECH)
Abstract:

This project evaluates the feasibility of using transit vehicles traveling on fixed routes in a well-controlled residential community in El Paso for near-road exposure assessment. Continuous on-road measurements of four pollutants (PM₂.₅, P.M₁₀, NO₂, and O₃) were recorded using U.S. Environmental Protection Agency (EPA) FEM-designated monitors in conjunction with a global positioning system (GPS) device for coordinates and vehicle speed. Concurrent near-road measurements of the same air pollutants at two near-road stationary sites were used to develop relationships with the mobile data. It was found that pollutant concentrations measured by mobile air monitors agree well with that collected at stationary sites. On-road PM₂.₅ and P.M₁₀ concentrations closely resemble that measured at stationary sites. O₃ concentration was found to be ubiquitous in the community whether it’s on-road, near-road, or in the community. On-road measurements of NO₂ showed slightly higher values compared to near-road sites. Furthermore, concentrations of transportation related air pollutants at traffic intersections in an environment with less traffic and topological features were found to be indistinguishable from that measured on road segments away from the traffic intersections. This study demonstrates that mobile air monitoring in a less traveled community can accurately detect the exposure concentrations that are representative of the community and near-road receptors. Further research should focus on how the mobile data can be used in exposure and health assessment and how the technique can be applied to characterize exposure concentrations at locations that stationary monitoring is not allowed or possible.
Format:

PDF
Funding:

69A3551747119
Collection(s):

University Transportation Centers US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:38a064d344242f9734231e067cf3166866d985c4f172674af19455fcb768eeeb
Download URL:

https://rosap.ntl.bts.gov/view/dot/60240/dot_60240_DS1.pdf
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Using Transit Vehicles as Probes to Monitor Community Air Quality and Exposure

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