A comparison of PM concentration on different underground metro station platforms

Document Type

Journal Article

Publication Date

2025

Subject Area

infrastructure - station, place - europe, place - urban, planning - environmental impact, technology - emissions

Keywords

Underground metro platforms, PM1, PM2.5, PM10, Statistical model, Multi stations

Abstract

The elevated concentration of airborne particulate matter on underground metro platforms, far higher than in aboveground environments, has drawn increasing public attention. This study builds on long-term particulate matter measurements from three underground metro platforms in Stockholm, introducing a platform-specified multi-factor model that improves on the previous single-station model. By incorporating platform-specific data, this new model enhances applicability across multiple stations and analyses the effects of train frequency, train type, passenger flow, and urban background PM on PM1, PM2.5, and PM10 concentration changes. Comparative analysis shows the new model has better flexibility, accuracy, and stability. The results reveal significant interactions between variables, with platform-specific differences in how these factors influence PM concentration rates. Model estimations indicate that as new train types replace older ones, PM concentrations will vary across platforms but are expected to approach the recommended levels set by Stockholm’s transport authorities.

Rights

Permission to publish the abstract has been given by Elsevier, copyright remains with them.

Comments

Transportation Research Part D Home Page:

http://www.sciencedirect.com/science/journal/13619209

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