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Does noise pollution influence modal choices? A random forest application.

Alessia Calafiore1, Ki Tong1

  • 1Edinburgh School of Architecture and Landscape Architecture, University of Edinburgh, Edinburgh, United Kingdom.

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|June 23, 2025
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Summary
This summary is machine-generated.

Noise pollution impacts transport mode choices differently in London and Brisbane. Urban planning and noise levels are key to encouraging active travel like walking and cycling.

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Area of Science:

  • Urban Planning
  • Environmental Science
  • Transportation Science

Background:

  • Modal choices are influenced by various urban factors.
  • Understanding these influences is crucial for sustainable transport policies.
  • Noise pollution is an understudied factor in transport mode selection.

Purpose of the Study:

  • To investigate the relationship between noise pollution and transport modal choices.
  • To compare these relationships in two distinct urban environments: Greater London and Brisbane.
  • To identify key contextual variables influencing active travel modes.

Main Methods:

  • Collected data on commuting flows, noise pollution, and built environment characteristics.
  • Employed random forest models for classification and variable importance analysis.
  • Trained and tested models for Greater London and Brisbane to explore non-linear relationships.

Main Results:

  • Noise levels significantly predict modal choices in Greater London.
  • Built environment characteristics are more influential in Brisbane.
  • Cycling behavior shares similarities with driving, differing from walking, in response to contextual factors.

Conclusions:

  • Noise pollution and urban design significantly affect transport choices.
  • Policies to promote active travel must consider specific factors influencing walking versus cycling.
  • Tailored strategies are needed to encourage sustainable modal shifts.