4.7 Article

TRAPSim: An agent-based model to estimate personal exposure to non-exhaust road emissions in central Seoul

Journal

COMPUTERS ENVIRONMENT AND URBAN SYSTEMS
Volume 99, Issue -, Pages -

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.compenvurbsys.2022.101894

Keywords

Traffic simulation; Exposure; Health; Agent-based model; NetLogo

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Non-exhaust emissions from brake and tyre wear have detrimental health effects. The study found that pedestrians who commuted for longer periods of time and were exposed to more ambient particles experienced significant health losses. Implementing a 90% vehicle restriction reduced PM10 and the percentage of at-risk drivers. Using an agent-based traffic simulator provided insights into the relationship between exposure and health effects.
Non-exhaust emissions (NEEs) from brake and tyre wear cause detrimental health effects, yet their relationship with mobility has not been examined rigorously. We constructed an agent-based traffic simulator to illustrate the coupled problems of emissions, behaviour, and the estimated exposure to PM10 for groups of drivers and subway commuters in Seoul CBD. Having calibrated the parameters, the results regarding the air quality revealed that roughly 25-30% of the roadside PM10 was significantly higher than the background PM10. Additionally, compared to intra-urban cars, pedestrians who commuted for longer periods of time and were exposed to more ambient particles suffered significant health losses; however, drivers only became aware of the health risk when PM10 levels were consistently high for a few days. Compared to the business-as-usual scenario of vehicle entry, a 90% vehicle restriction was able to reduce PM10 by 18-24% and cut the percentage of resident drivers who were at risk. However, it was not effective for subway commuters. Using an agent-based traffic simulator in a health context can provide insights into how exposure and health effects can vary depending on the time of exposure and the form of transportation.

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