Sang-Hee Woo1, Hyoungjoon Jang1, Seung-Bok Lee2, Juyoung Jeong3, Choonghwan Lee3, Seokhwan Lee  This email address is being protected from spambots. You need JavaScript enabled to view it.1 

1 Department of Mobility Research, Korea Institute of Machinery and Materials, Daejeon 34103, Korea
2 Center for Sustainable Environment Research, Korea Institute of Science and Technology, Seoul 02792, Korea
3 Department of Atmospheric Environment, Korea Environment Corporation, Incheon 22689, Korea

Received: December 21, 2023
Revised: June 26, 2024
Accepted: July 4, 2024

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

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Woo, S.H., Jang, H., Lee, S.B., Jeong, J., Lee, C., Lee, S. (2024). Correction Method for Resuspended Road Dust Emission Factors according to Vehicle Speed Using a Mobile Monitoring Vehicle. Aerosol Air Qual. Res.


  • A mobile monitoring vehicle was used to determine resuspended road dust EFs.
  • The dust signal from vehicle was converted to the resuspended road dust EF.
  • By correcting the EF based on the average vehicle speed, EF deviation was significantly reduced.
  • Hard braking, background PM concentration, and lane changes could increase EF deviation.


A mobile monitoring vehicle was used to measure road dust concentrations and determine resuspended road dust emission factors (EFs). By comparing the dust signal from the mobile monitoring vehicle and the EF calculated from a PM flux measurement using a flux tower, it was possible to convert the dust concentration detected by the mobile monitoring vehicle into resuspended road dust EF. On-road driving studies were conducted at various vehicle speeds on six different roads to determine the relationship between vehicle speed and resuspended road dust EF. The resuspended road dust EF exponentially increased with vehicle speed. A speed-related correction approach was established to reduce the variability in resuspended road dust EF caused by variations in vehicle speed. A mobile monitoring vehicle was used to determine the EFs of resuspended road dust from motorways and urban and rural roads in the Daejeon metropolitan of Korea. Local hot spots with high silt loading were identified by adjusting the EF according to vehicle speed. Additionally, three repeated measurements taken along the same route confirmed that EF deviation between measurements could be decreased by ≥ 50% after adjustment. In this study, we devised a vehicle speed-related correction method to obtain accurate and reliable EFs of resuspended road dust using a mobile monitoring vehicle, even based on a single on-road driving measurement.

Keywords: Non-exhaust particulate matter, Re-suspended road dust, Mobile sampling vehicle

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