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Modelling seasonal tire-wear particle concentrations within road dust using a logistic-based accumulation model
Woosuk Chung1, Se Hyun Lee1, Minseung Hyun1
1Department of Chemical Engineering, Kwangwoon University, Seoul, 01897, South Korea.
Environmental Pollution (Barking, Essex : 1987)
|November 24, 2025
Summary
Tire wear particles (TWP) pose an environmental risk, with concentrations varying by road type and season. Rainfall and street cleaning significantly influence TWP levels, highlighting their importance in urban pollution management.
Area of Science:
- Environmental Science
- Urban Pollution Dynamics
- Road Dust Characterization
Background:
- Tire wear particles (TWP) are a significant source of urban road dust and an emerging environmental concern.
- Understanding the year-round dynamics and removal mechanisms of TWP is crucial for effective environmental management.
Purpose of the Study:
- To develop and validate a probabilistic simulation framework for evaluating TWP concentrations in diverse urban road environments.
- To investigate the influence of road type, seasonality, rainfall, and cleaning events on TWP dynamics.
Main Methods:
- Development of a probabilistic simulation framework incorporating stochastic rainfall wash-off and cleaning events.
- Validation of model results against measured TWP concentrations across urban arterial, industrial, and residential roads in Seoul.
- Scenario analyses to assess the impact of varying cleaning frequencies, rainfall intensity, and climate change projections.
Main Results:
- TWP concentrations exhibit clear road-type and seasonal dependencies, with urban roads having the lowest and industrial roads the highest concentrations.
- Residential roads show high sensitivity to rainfall, with significant declines during monsoon seasons.
- Model validation confirmed good agreement with field observations, particularly for residential roads.
Conclusions:
- Rainfall and street cleaning play complementary and crucial roles in regulating TWP accumulation in urban environments.
- Effective street cleaning can significantly reduce year-round TWP accumulation.
- Future climate scenarios with increased rainfall may lead to divergent impacts on TWP concentrations across different road types.
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